{"title":"Beam Control \u0026 Coated Optics","description":"\u003cp\u003eExplore optics for dividing light, reducing intensity and controlling surface reflection, together with individual sample-book designs.\u003c\/p\u003e\u003cp\u003eBegin with the required optical function, then confirm wavelength range, angle, substrate and the relevant transmission or reflection specification.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/neutral-density-nd-filter\"\u003eNeutral Density Filters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"ar1s-vnir-01","title":"AR1S-VNIR-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR1S-VNIR-01)\u003c\/h2\u003e\n\u003cp\u003eAR1S-VNIR-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 494-1000 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-1000 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 350-353 nm; 494-1000 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 96% at 799 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 550-950 nm:\u003c\/strong\u003e 95.595%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 494-1000 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR1S-VNIR-01.html\" title=\"AR1S-VNIR-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR1S-VNIR-01\u003c\/h2\u003e\n\u003ch3\u003eWhich wavelengths should I check first for AR1S-VNIR-01?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 95.595% average transmission over 550-950 nm. Start with the interval that covers your source and detector. The measurement covers 300-1000 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eCan I read surface reflectance directly from the AR1S-VNIR-01 transmission chart?\u003c\/h3\u003e\n\u003cp\u003eThe AR1S-VNIR-01 measurement is transmission through the complete sample, including 95.595% averaged over 550-950 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Single-Side \/ Visible-NIR","offer_id":48516665737471,"sku":"AR1S-VNIR-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar1s-vnir-01-spectrum.jpg?v=1778712823"},{"product_id":"ar1s-multi4-01","title":"AR1S-MULTI4-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR1S-MULTI4-01)\u003c\/h2\u003e\n\u003cp\u003eAR1S-MULTI4-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 1010-2050 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 900-2050 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 1010-2050 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or below 5% transmission:\u003c\/strong\u003e 900-923 nm. Measured sample intervals; confirm the required blocking for your order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 97.6% at 1611 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1024-1104 nm:\u003c\/strong\u003e 95.694%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1260-1340 nm:\u003c\/strong\u003e 96.607%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1480-1650 nm:\u003c\/strong\u003e 97.444%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1960-2040 nm:\u003c\/strong\u003e 96.176%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 1010-2050 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR1S-MULTI4-01.html\" title=\"AR1S-MULTI4-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR1S-MULTI4-01\u003c\/h2\u003e\n\u003ch3\u003eWhich wavelengths should I check first for AR1S-MULTI4-01?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 95.694% average transmission over 1024-1104 nm; 96.607% average transmission over 1260-1340 nm; 97.444% average transmission over 1480-1650 nm; 96.176% average transmission over 1960-2040 nm. Start with the interval that covers your source and detector. The measurement covers 900-2050 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eCan I read surface reflectance directly from the AR1S-MULTI4-01 transmission chart?\u003c\/h3\u003e\n\u003cp\u003eThe AR1S-MULTI4-01 measurement is transmission through the complete sample, including 95.694% averaged over 1024-1104 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Single-Side \/ Visible-NIR","offer_id":48516665770239,"sku":"AR1S-MULTI4-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar1s-multi4-01-spectrum.jpg?v=1778712824"},{"product_id":"ar1s-swir-01","title":"AR1S-SWIR-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR1S-SWIR-01)\u003c\/h2\u003e\n\u003cp\u003eAR1S-SWIR-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 1097-1800 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 1000-1800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 1097-1800 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 97.6% at 1616 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1260-1630 nm:\u003c\/strong\u003e 97.288%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 1097-1800 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR1S-SWIR-01.html\" title=\"AR1S-SWIR-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR1S-SWIR-01\u003c\/h2\u003e\n\u003ch3\u003eHow do I compare AR1S-SWIR-01 with another coated optic?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 97.288% average transmission over 1260-1630 nm. Start with the interval that covers your source and detector. The measurement covers 1000-1800 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eWhat else matters when specifying AR1S-SWIR-01 for my optical assembly?\u003c\/h3\u003e\n\u003cp\u003eThe AR1S-SWIR-01 measurement is transmission through the complete sample, including 97.288% averaged over 1260-1630 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Single-Side \/ Short-Wave IR","offer_id":48516665803007,"sku":"AR1S-SWIR-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar1s-swir-01-spectrum.jpg?v=1778712825"},{"product_id":"ar1s-nir-dual-01","title":"AR1S-NIR-DUAL-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR1S-NIR-DUAL-01)\u003c\/h2\u003e\n\u003cp\u003eAR1S-NIR-DUAL-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 717-1500 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 700-1500 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 717-1500 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 97.3% at 1480 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 800-900 nm:\u003c\/strong\u003e 95.880%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1250-1350 nm:\u003c\/strong\u003e 97.075%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 717-1500 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR1S-NIR-DUAL-01.html\" title=\"AR1S-NIR-DUAL-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR1S-NIR-DUAL-01\u003c\/h2\u003e\n\u003ch3\u003eWhat transmission does the AR1S-NIR-DUAL-01 measured sample show?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 95.880% average transmission over 800-900 nm; 97.075% average transmission over 1250-1350 nm. Start with the interval that covers your source and detector. The measurement covers 700-1500 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eDoes high transmission alone establish the reflection specification for AR1S-NIR-DUAL-01?\u003c\/h3\u003e\n\u003cp\u003eThe AR1S-NIR-DUAL-01 measurement is transmission through the complete sample, including 95.880% averaged over 800-900 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Single-Side \/ Near-Infrared","offer_id":48516665901311,"sku":"AR1S-NIR-DUAL-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar1s-nir-dual-01-spectrum.jpg?v=1778712826"},{"product_id":"ar2s-swir-01","title":"AR2S-SWIR-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR2S-SWIR-01)\u003c\/h2\u003e\n\u003cp\u003eAR2S-SWIR-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 1400-1800 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 1400-1800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 1400-1800 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 99.9% at 1655 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1505-1605 nm:\u003c\/strong\u003e 99.694%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 1400-1800 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR2S-SWIR-01.html\" title=\"AR2S-SWIR-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR2S-SWIR-01\u003c\/h2\u003e\n\u003ch3\u003eWhich wavelengths should I check first for AR2S-SWIR-01?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 99.694% average transmission over 1505-1605 nm. Start with the interval that covers your source and detector. The measurement covers 1400-1800 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eCan I read surface reflectance directly from the AR2S-SWIR-01 transmission chart?\u003c\/h3\u003e\n\u003cp\u003eThe AR2S-SWIR-01 measurement is transmission through the complete sample, including 99.694% averaged over 1505-1605 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Both-Sides \/ Short-Wave IR","offer_id":48516665934079,"sku":"AR2S-SWIR-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar2s-swir-01-spectrum.jpg?v=1778712827"},{"product_id":"ar2s-rnir-01","title":"AR2S-RNIR-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR2S-RNIR-01)\u003c\/h2\u003e\n\u003cp\u003eAR2S-RNIR-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 564-1192 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-1200 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 349-432 nm; 564-1192 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or below 5% transmission:\u003c\/strong\u003e 300-324 nm. Measured sample intervals; confirm the required blocking for your order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 99.5% at 937 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 625-900 nm:\u003c\/strong\u003e 98.198%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 564-1192 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR2S-RNIR-01.html\" title=\"AR2S-RNIR-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR2S-RNIR-01\u003c\/h2\u003e\n\u003ch3\u003eHow do I compare AR2S-RNIR-01 with another coated optic?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 98.198% average transmission over 625-900 nm. Start with the interval that covers your source and detector. The measurement covers 300-1200 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eWhat else matters when specifying AR2S-RNIR-01 for my optical assembly?\u003c\/h3\u003e\n\u003cp\u003eThe AR2S-RNIR-01 measurement is transmission through the complete sample, including 98.198% averaged over 625-900 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Both-Sides \/ Red-NIR","offer_id":48516665999615,"sku":"AR2S-RNIR-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar2s-rnir-01-spectrum.jpg?v=1778712827"},{"product_id":"ar2s-uvb-01","title":"AR2S-UVB-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR2S-UVB-01)\u003c\/h2\u003e\n\u003cp\u003eAR2S-UVB-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 349-800 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 349-800 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or below 5% transmission:\u003c\/strong\u003e 300-313 nm. Measured sample intervals; confirm the required blocking for your order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 97.2% at 411 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 370-440 nm:\u003c\/strong\u003e 96.046%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-ultraviolet\/violet optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 349-800 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelect by the documented near-UV\/violet wavelengths; the SKU identifier is not a UVB-band specification.\u003c\/li\u003e\n\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR2S-UVB-01.html\" title=\"AR2S-UVB-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR2S-UVB-01\u003c\/h2\u003e\n\u003ch3\u003eWhat transmission does the AR2S-UVB-01 measured sample show?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 96.046% average transmission over 370-440 nm. Start with the interval that covers your source and detector. The measurement covers 300-800 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eDoes high transmission alone establish the reflection specification for AR2S-UVB-01?\u003c\/h3\u003e\n\u003cp\u003eThe AR2S-UVB-01 measurement is transmission through the complete sample, including 96.046% averaged over 370-440 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Both-Sides \/ UV","offer_id":48516666032383,"sku":"AR2S-UVB-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar2s-uvb-01-spectrum.jpg?v=1778712828"},{"product_id":"ar2s-mp-01","title":"AR2S-MP-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR2S-MP-01)\u003c\/h2\u003e\n\u003cp\u003eAR2S-MP-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 393-764 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 393-764 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Near-unity transmission is indicated, but the measurement baseline requires confirmation before quoting a peak value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 425-680 nm:\u003c\/strong\u003e 99.460%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 393-764 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR2S-MP-01.html\" title=\"AR2S-MP-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR2S-MP-01\u003c\/h2\u003e\n\u003ch3\u003eWhat transmission does the AR2S-MP-01 measured sample show?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 99.460% average transmission over 425-680 nm. Start with the interval that covers your source and detector. The measurement covers 300-800 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eDoes high transmission alone establish the reflection specification for AR2S-MP-01?\u003c\/h3\u003e\n\u003cp\u003eThe AR2S-MP-01 measurement is transmission through the complete sample, including 99.460% averaged over 425-680 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Both-Sides \/ Visible","offer_id":48516666097919,"sku":"AR2S-MP-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar2s-mp-01-spectrum.jpg?v=1778712829"},{"product_id":"ar2s-vnir-01","title":"AR2S-VNIR-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR2S-VNIR-01)\u003c\/h2\u003e\n\u003cp\u003eAR2S-VNIR-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 369-1123 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-1200 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 369-1123 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 99.5% at 722 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 400-1000 nm:\u003c\/strong\u003e 97.503%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 369-1123 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR2S-VNIR-01.html\" title=\"AR2S-VNIR-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR2S-VNIR-01\u003c\/h2\u003e\n\u003ch3\u003eWhich wavelengths should I check first for AR2S-VNIR-01?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 97.503% average transmission over 400-1000 nm. Start with the interval that covers your source and detector. The measurement covers 300-1200 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eCan I read surface reflectance directly from the AR2S-VNIR-01 transmission chart?\u003c\/h3\u003e\n\u003cp\u003eThe AR2S-VNIR-01 measurement is transmission through the complete sample, including 97.503% averaged over 400-1000 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Both-Sides \/ Visible-NIR","offer_id":48516666130687,"sku":"AR2S-VNIR-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar2s-vnir-01-spectrum.jpg?v=1778712831"},{"product_id":"ar2s-vis-01","title":"AR2S-VIS-01 Anti-reflection coating","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/anti-reflective-ar-coatings\"\u003eAnti-Reflective Coatings\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eAnti-reflection coating (AR2S-VIS-01)\u003c\/h2\u003e\n\u003cp\u003eAR2S-VIS-01 is an anti-reflection coating. The measured curve shows a high-transmission region at approximately 365-800 nm. Use it when you want to pass a broad range of wavelengths. Add a separate filter if you need to select a specific band.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 365-800 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak transmission:\u003c\/strong\u003e Approximately 99.3% at 495 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 400-700 nm:\u003c\/strong\u003e 98.761%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging optical windows:\u003c\/strong\u003e Consider this window when the wavelengths you want to pass fall within 365-800 nm. Confirm the substrate and coated surfaces for the assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShared optical paths:\u003c\/strong\u003e Consider it when several wavelengths need to pass through the same window. Add separate spectral selection if the channels need to be isolated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument throughput improvement:\u003c\/strong\u003e Check how much light the coated optic passes against the needs of your system. Confirm reflectance, working angle and surface quality for your design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eTransmission is broadband and does not itself separate wavelength channels. Confirm the required reflectance, coated surfaces, substrate and angle of incidence.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/AR2S-VIS-01.html\" title=\"AR2S-VIS-01 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about AR2S-VIS-01\u003c\/h2\u003e\n\u003ch3\u003eHow do I compare AR2S-VIS-01 with another coated optic?\u003c\/h3\u003e\n\u003cp\u003eThe sample data gives 98.761% average transmission over 400-700 nm. Start with the interval that covers your source and detector. The measurement covers 300-800 nm; it does not establish performance outside that range.\u003c\/p\u003e\n\u003ch3\u003eWhat else matters when specifying AR2S-VIS-01 for my optical assembly?\u003c\/h3\u003e\n\u003cp\u003eThe AR2S-VIS-01 measurement is transmission through the complete sample, including 98.761% averaged over 400-700 nm. A surface-reflection specification needs its own measurement conditions. Tell us the substrate, coated surfaces and working angle so we can compare the coating in the assembly you actually plan to use.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Anti-Reflective Coating \/ Both-Sides \/ Visible","offer_id":48516666163455,"sku":"AR2S-VIS-01","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/ar2s-vis-01-spectrum.jpg?v=1778712831"},{"product_id":"bms-011","title":"BMS-011 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-011)\u003c\/h2\u003e\n\u003cp\u003eBMS-011 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-500 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 76.2-78.3% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 315-436 nm:\u003c\/strong\u003e 77.414%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-011.html\" title=\"BMS-011 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-011\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-011 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 77.414% average transmission over 315-436 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eCan I choose BMS-011 before fixing the beam geometry?\u003c\/h3\u003e\n\u003cp\u003eConfirm the intended angle with us before finalizing the layout. For BMS-011, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667736319,"sku":"BMS-011","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-011-spectrum.jpg?v=1778712870"},{"product_id":"bms-010","title":"BMS-010 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-010)\u003c\/h2\u003e\n\u003cp\u003eBMS-010 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-500 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 51-58% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 315-436 nm:\u003c\/strong\u003e 50.712%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-010.html\" title=\"BMS-010 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-010\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-010 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 50.712% average transmission over 315-436 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eWhat angle should I specify for BMS-010?\u003c\/h3\u003e\n\u003cp\u003eConfirm the intended angle with us before finalizing the layout. For BMS-010, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667769087,"sku":"BMS-010","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-010-spectrum.jpg?v=1778712871"},{"product_id":"bms-009","title":"BMS-009 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-009)\u003c\/h2\u003e\n\u003cp\u003eBMS-009 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-500 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 25.6-45.4% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 315-436 nm:\u003c\/strong\u003e 25.900%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-009.html\" title=\"BMS-009 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-009\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-009 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 25.900% average transmission over 315-436 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eWhat should I confirm before putting BMS-009 in my layout?\u003c\/h3\u003e\n\u003cp\u003eConfirm the intended angle with us before finalizing the layout. For BMS-009, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667801855,"sku":"BMS-009","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-009-spectrum.jpg?v=1778712872"},{"product_id":"bms-007","title":"BMS-007 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-007)\u003c\/h2\u003e\n\u003cp\u003eBMS-007 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-1100 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 43.2-53.1% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-600 nm:\u003c\/strong\u003e Approximately 50.1-53.7% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600-700 nm:\u003c\/strong\u003e Approximately 50.2-53.9% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 530-1070 nm:\u003c\/strong\u003e 50.739%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory working-angle designation:\u003c\/strong\u003e The matching factory worksheet is designated for 45 degrees angle of incidence. Confirm polarization and final acceptance conditions for the supplied configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-007.html\" title=\"BMS-007 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-007\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-007 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 50.739% average transmission over 530-1070 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eCan I choose BMS-007 before fixing the beam geometry?\u003c\/h3\u003e\n\u003cp\u003eThe matching factory worksheet is designated for 45-degree incidence. For BMS-007, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667834623,"sku":"BMS-007","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-007-spectrum.jpg?v=1778712872"},{"product_id":"bms-006","title":"BMS-006 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-006)\u003c\/h2\u003e\n\u003cp\u003eBMS-006 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 43.6-49.5% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-600 nm:\u003c\/strong\u003e Approximately 49.5-51.2% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600-700 nm:\u003c\/strong\u003e Approximately 49.8-52.9% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 440-710 nm:\u003c\/strong\u003e 50.344%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory working-angle designation:\u003c\/strong\u003e The matching factory worksheet is designated for 45 degrees angle of incidence. Confirm polarization and final acceptance conditions for the supplied configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-006.html\" title=\"BMS-006 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-006\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-006 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 50.344% average transmission over 440-710 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eWhat angle should I specify for BMS-006?\u003c\/h3\u003e\n\u003cp\u003eThe matching factory worksheet is designated for 45-degree incidence. For BMS-006, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667867391,"sku":"BMS-006","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-006-spectrum.jpg?v=1778712873"},{"product_id":"bms-005","title":"BMS-005 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-005)\u003c\/h2\u003e\n\u003cp\u003eBMS-005 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-1000 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 45.9-54.8% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-600 nm:\u003c\/strong\u003e Approximately 50.1-52% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600-700 nm:\u003c\/strong\u003e Approximately 48.8-51.7% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 420-900 nm:\u003c\/strong\u003e 50.648%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory working-angle designation:\u003c\/strong\u003e The matching factory worksheet is designated for 45 degrees angle of incidence. Confirm polarization and final acceptance conditions for the supplied configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-005.html\" title=\"BMS-005 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-005\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-005 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 50.648% average transmission over 420-900 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eWhat should I confirm before putting BMS-005 in my layout?\u003c\/h3\u003e\n\u003cp\u003eThe matching factory worksheet is designated for 45-degree incidence. For BMS-005, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667900159,"sku":"BMS-005","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-005-spectrum.jpg?v=1778712874"},{"product_id":"bms-004","title":"BMS-004 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-004)\u003c\/h2\u003e\n\u003cp\u003eBMS-004 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 21.5-27.9% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-600 nm:\u003c\/strong\u003e Approximately 22.4-27.9% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600-700 nm:\u003c\/strong\u003e Approximately 23.7-25.2% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 380-800 nm:\u003c\/strong\u003e 24.840%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory working-angle designation:\u003c\/strong\u003e The matching factory worksheet is designated for 45 degrees angle of incidence. Confirm polarization and final acceptance conditions for the supplied configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-004.html\" title=\"BMS-004 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-004\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-004 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 24.840% average transmission over 380-800 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eCan I choose BMS-004 before fixing the beam geometry?\u003c\/h3\u003e\n\u003cp\u003eThe matching factory worksheet is designated for 45-degree incidence. For BMS-004, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667932927,"sku":"BMS-004","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-004-spectrum.jpg?v=1778712875"},{"product_id":"bms-003","title":"BMS-003 650 nm reflecting beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003e650 nm reflecting beam splitter (BMS-003)\u003c\/h2\u003e\n\u003cp\u003eBMS-003 is a beam splitter for a reflected red-light path. The factory describes a nominal 650 nm design for use at a 45-degree angle. The supplied curve measures reflected light; ask us to confirm the transmitted light separately.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm reflectance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured reflectance at 650 nm:\u003c\/strong\u003e 89.098%. This is reflected light, not transmitted light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory design designation:\u003c\/strong\u003e 650 nm, 45 degrees, nominal reflectance 90% +\/-3%. Factory design target; confirm the final specification for your order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed-light beam routing:\u003c\/strong\u003e Evaluate the reflected path around 650 nm for illumination or instrument integration. Match the source bandwidth and optical geometry to the required response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical monitoring:\u003c\/strong\u003e Discuss a reflected signal and a separately specified transmitted path for the intended source and detector.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm both reflected and transmitted paths, polarization and working angle. Reflectance alone does not determine transmission.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eReflectance spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-003.html\" title=\"BMS-003 reflectance spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-003\u003c\/h2\u003e\n\u003ch3\u003eDoes the 89.098% reading at 650 nm mean transmission?\u003c\/h3\u003e\n\u003cp\u003eIt means reflectance: that fraction of the measured 650 nm light is reflected by the measured sample. BMS-003 is intended for a reflected red-light path; the chart does not establish the transmission of the other path.\u003c\/p\u003e\n\u003ch3\u003eCan I install BMS-003 at a different angle from 45 degrees?\u003c\/h3\u003e\n\u003cp\u003eThe factory identifies this as a 45-degree design. If your layout uses another angle, tell us the beam geometry and polarization before selecting it. The supplied curve does not establish the response at other angles.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667965695,"sku":"BMS-003","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-003-reviewed-reflectance_8472f93d-90c8-40c6-88cf-d874ae705abb.png?v=1788660903"},{"product_id":"bms-002","title":"BMS-002 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-002)\u003c\/h2\u003e\n\u003cp\u003eBMS-002 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 44.1-47% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-600 nm:\u003c\/strong\u003e Approximately 44.9-47% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600-700 nm:\u003c\/strong\u003e Approximately 44.7-45.5% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 400-700 nm:\u003c\/strong\u003e 45.362%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory working-angle designation:\u003c\/strong\u003e The matching factory worksheet is designated for 45 degrees angle of incidence. Confirm polarization and final acceptance conditions for the supplied configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-002.html\" title=\"BMS-002 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-002\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-002 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 45.362% average transmission over 400-700 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eWhat should I confirm before putting BMS-002 in my layout?\u003c\/h3\u003e\n\u003cp\u003eThe matching factory worksheet is designated for 45-degree incidence. For BMS-002, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516667998463,"sku":"BMS-002","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-002-spectrum.jpg?v=1778712877"},{"product_id":"bms-001","title":"BMS-001 Beam splitter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/beam-splitters\"\u003eBeam Splitters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eBeam splitter (BMS-001)\u003c\/h2\u003e\n\u003cp\u003eBMS-001 is a beam splitter. Consider it when you need to split light between a main optical path and a monitoring detector or second device. The reference spectrum describes the transmitted path; choose the required reflection ratio and angle of incidence with KUPO.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-500 nm:\u003c\/strong\u003e Approximately 80.5-84.2% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500-600 nm:\u003c\/strong\u003e Approximately 83-84% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600-700 nm:\u003c\/strong\u003e Approximately 81.4-83.1% transmission in the measured curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflection and working angle:\u003c\/strong\u003e Specify the required reflected path, polarization and angle; transmission alone does not establish those properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 400-700 nm:\u003c\/strong\u003e 83.062%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory working-angle designation:\u003c\/strong\u003e The matching factory worksheet is designated for 45 degrees angle of incidence. Confirm polarization and final acceptance conditions for the supplied configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination monitoring:\u003c\/strong\u003e Consider it for sending part of a beam to a monitoring detector. Specify the required throughput in both paths at the working angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-path imaging:\u003c\/strong\u003e Consider it for sharing light between a camera and another imaging or viewing device. Account for polarization, wavefront requirements and wavelength-dependent balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstrument integration:\u003c\/strong\u003e Compare the transmission profile with the required spectral band, then confirm reflection and geometry before finalizing the optical layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eConfirm transmitted and reflected specifications separately, including polarization and angle of incidence. The supplied transmission curve is not a measurement of the reflected path.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/BMS-001.html\" title=\"BMS-001 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about BMS-001\u003c\/h2\u003e\n\u003ch3\u003eWhat does the BMS-001 curve tell me about the two output paths?\u003c\/h3\u003e\n\u003cp\u003eIt gives the transmitted-light response, including 83.062% average transmission over 400-700 nm. It does not independently measure the reflected path. Specify the response you need in each path rather than assuming they are equal.\u003c\/p\u003e\n\u003ch3\u003eCan I choose BMS-001 before fixing the beam geometry?\u003c\/h3\u003e\n\u003cp\u003eThe matching factory worksheet is designated for 45-degree incidence. For BMS-001, include the wavelength range and polarization of each path. A transmission curve alone is not enough to establish the split for a different geometry.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Beam Splitter","offer_id":48516668031231,"sku":"BMS-001","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bms-001-spectrum.jpg?v=1778712877"},{"product_id":"lee299","title":"LEE299 Neutral-density filter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/neutral-density-nd-filter\"\u003eNeutral Density Filters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eNeutral-density filter (LEE299)\u003c\/h2\u003e\n\u003cp\u003eLEE299 is a neutral-density filter. The measured curve transmits approximately 1.5-3% over 400-700 nm. It provides attenuation for exposure and detector-level adjustment; the variation across wavelength should be considered when color balance matters.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 380-780 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured optical density:\u003c\/strong\u003e Approximately 1.52-1.81 over 400-700 nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure reduction:\u003c\/strong\u003e Approximately 5.06-6.02 stops across the same interval. Actual exposure change depends on the source and detector response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging exposure control:\u003c\/strong\u003e Evaluate attenuation when the required shutter speed, aperture or illumination level leaves the detector close to saturation. Check color balance across the camera response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting-level adjustment:\u003c\/strong\u003e Consider reducing output without changing the source drive setting. Choose attenuation and thermal conditions for your fixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical test benches:\u003c\/strong\u003e Consider a transmission attenuator for detector-range adjustment. Confirm wavelength-dependent attenuation and power handling against the test setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch attenuation to the wavelength range of the source and detector. Optical density and exposure reduction vary with wavelength.\u003c\/li\u003e\n\u003cli\u003eFor high-power light sources, tell us the power density at the filter, beam size and operating conditions so we can assess a suitable optic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/LEE299.html\" title=\"LEE299 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about LEE299\u003c\/h2\u003e\n\u003ch3\u003eHow much exposure reduction should I expect from LEE299?\u003c\/h3\u003e\n\u003cp\u003eThe sample calculation gives approximately 5.06-6.02 stops over 400-700 nm. Its optical density is approximately 1.52-1.81 over 400-700 nm. These estimates help you choose attenuation; check the result with your actual source and detector.\u003c\/p\u003e\n\u003ch3\u003eIs LEE299 equally neutral across blue, green and red?\u003c\/h3\u003e\n\u003cp\u003eThe measured transmission varies from 1.5-3% over 400-700 nm. That is the variation to assess when color balance matters. Compare the full visible curve with the wavelengths used by your source rather than treating the attenuation as perfectly flat.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Neutral Density (ND) Filter","offer_id":48516671209727,"sku":"LEE299","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/lee299-spectrum.jpg?v=1778712948"},{"product_id":"lee211","title":"LEE211 Neutral-density filter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/neutral-density-nd-filter\"\u003eNeutral Density Filters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eNeutral-density filter (LEE211)\u003c\/h2\u003e\n\u003cp\u003eLEE211 is a neutral-density filter. The measured curve transmits approximately 6-7.3% over 400-700 nm. It provides attenuation for exposure and detector-level adjustment; the variation across wavelength should be considered when color balance matters.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 380-780 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured optical density:\u003c\/strong\u003e Approximately 1.14-1.22 over 400-700 nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure reduction:\u003c\/strong\u003e Approximately 3.77-4.06 stops across the same interval. Actual exposure change depends on the source and detector response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging exposure control:\u003c\/strong\u003e Evaluate attenuation when the required shutter speed, aperture or illumination level leaves the detector close to saturation. Check color balance across the camera response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting-level adjustment:\u003c\/strong\u003e Consider reducing output without changing the source drive setting. Choose attenuation and thermal conditions for your fixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical test benches:\u003c\/strong\u003e Consider a transmission attenuator for detector-range adjustment. Confirm wavelength-dependent attenuation and power handling against the test setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch attenuation to the wavelength range of the source and detector. Optical density and exposure reduction vary with wavelength.\u003c\/li\u003e\n\u003cli\u003eFor high-power light sources, tell us the power density at the filter, beam size and operating conditions so we can assess a suitable optic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/LEE211.html\" title=\"LEE211 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about LEE211\u003c\/h2\u003e\n\u003ch3\u003eHow much exposure reduction should I expect from LEE211?\u003c\/h3\u003e\n\u003cp\u003eThe sample calculation gives approximately 3.77-4.06 stops over 400-700 nm. Its optical density is approximately 1.14-1.22 over 400-700 nm. These estimates help you choose attenuation; check the result with your actual source and detector.\u003c\/p\u003e\n\u003ch3\u003eIs LEE211 equally neutral across blue, green and red?\u003c\/h3\u003e\n\u003cp\u003eThe measured transmission varies from 6-7.3% over 400-700 nm. That is the variation to assess when color balance matters. Compare the full visible curve with the wavelengths used by your source rather than treating the attenuation as perfectly flat.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Neutral Density (ND) Filter","offer_id":48516671242495,"sku":"LEE211","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/lee211-spectrum.jpg?v=1778712948"},{"product_id":"lee210","title":"LEE210 Neutral-density filter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/neutral-density-nd-filter\"\u003eNeutral Density Filters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eNeutral-density filter (LEE210)\u003c\/h2\u003e\n\u003cp\u003eLEE210 is a neutral-density filter. The measured curve transmits approximately 20.6-21.8% over 400-700 nm. It provides attenuation for exposure and detector-level adjustment; the variation across wavelength should be considered when color balance matters.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 380-780 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured optical density:\u003c\/strong\u003e Approximately 0.66-0.69 over 400-700 nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure reduction:\u003c\/strong\u003e Approximately 2.2-2.28 stops across the same interval. Actual exposure change depends on the source and detector response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging exposure control:\u003c\/strong\u003e Evaluate attenuation when the required shutter speed, aperture or illumination level leaves the detector close to saturation. Check color balance across the camera response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting-level adjustment:\u003c\/strong\u003e Consider reducing output without changing the source drive setting. Choose attenuation and thermal conditions for your fixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical test benches:\u003c\/strong\u003e Consider a transmission attenuator for detector-range adjustment. Confirm wavelength-dependent attenuation and power handling against the test setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch attenuation to the wavelength range of the source and detector. Optical density and exposure reduction vary with wavelength.\u003c\/li\u003e\n\u003cli\u003eFor high-power light sources, tell us the power density at the filter, beam size and operating conditions so we can assess a suitable optic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/LEE210.html\" title=\"LEE210 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about LEE210\u003c\/h2\u003e\n\u003ch3\u003eHow much exposure reduction should I expect from LEE210?\u003c\/h3\u003e\n\u003cp\u003eThe sample calculation gives approximately 2.2-2.28 stops over 400-700 nm. Its optical density is approximately 0.66-0.69 over 400-700 nm. These estimates help you choose attenuation; check the result with your actual source and detector.\u003c\/p\u003e\n\u003ch3\u003eIs LEE210 equally neutral across blue, green and red?\u003c\/h3\u003e\n\u003cp\u003eThe measured transmission varies from 20.6-21.8% over 400-700 nm. That is the variation to assess when color balance matters. Compare the full visible curve with the wavelengths used by your source rather than treating the attenuation as perfectly flat.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Neutral Density (ND) Filter","offer_id":48516671275263,"sku":"LEE210","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/lee210-spectrum.jpg?v=1778712949"},{"product_id":"lee209","title":"LEE209 Neutral-density filter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/neutral-density-nd-filter\"\u003eNeutral Density Filters\u003c\/a\u003e\u003c\/p\u003e\u003c\/nav\u003e\u003cstyle\u003e\n.ko-reviewed{color:#222;font-family:inherit;line-height:1.65;overflow-wrap:anywhere}\n.ko-reviewed *{box-sizing:border-box}.ko-reviewed h2,.ko-reviewed h3{color:#005F96;line-height:1.3}\n.ko-reviewed h2{font-size:24px;margin:0 0 1rem}.ko-reviewed h3{font-size:19px;margin:1.7rem 0 .65rem}\n.ko-reviewed p{margin:.6rem 0 1rem}.ko-reviewed ul{padding-left:1.25rem;margin:.6rem 0 1rem}\n.ko-reviewed li{padding-left:.15rem;margin:.55rem 0}.ko-reviewed .ko-note{border-left:3px solid #c9dae4;padding:.65rem 1rem;background:#f7fafc;font-size:.95em}\n.ko-reviewed a{color:#005F96;text-decoration:underline}\n\n@media(max-width:480px){.ko-reviewed h2{font-size:22px}.ko-reviewed h3{font-size:18px}.ko-reviewed .ko-note{padding:.65rem .8rem}}\n\u003c\/style\u003e\u003csection class=\"ko-reviewed\"\u003e\u003ch2 class=\"ko-catalog-description-title\"\u003eNeutral-density filter (LEE209)\u003c\/h2\u003e\n\u003cp\u003eLEE209 is a neutral-density filter. The measured curve transmits approximately 36.5-41.1% over 400-700 nm. It provides attenuation for exposure and detector-level adjustment; the variation across wavelength should be considered when color balance matters.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 380-780 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured optical density:\u003c\/strong\u003e Approximately 0.39-0.44 over 400-700 nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure reduction:\u003c\/strong\u003e Approximately 1.28-1.45 stops across the same interval. Actual exposure change depends on the source and detector response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e We can customize stock and sample-book designs. Tell us the wavelength response, size and operating conditions you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ko-note\"\u003eThese values come from the measured samples and help you choose a starting design. We will agree the final specification for your order. Custom versions have their own specifications and measured curves.\u003c\/p\u003e\n\u003ch3\u003eApplications to consider\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging exposure control:\u003c\/strong\u003e Evaluate attenuation when the required shutter speed, aperture or illumination level leaves the detector close to saturation. Check color balance across the camera response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting-level adjustment:\u003c\/strong\u003e Consider reducing output without changing the source drive setting. Choose attenuation and thermal conditions for your fixture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical test benches:\u003c\/strong\u003e Consider a transmission attenuator for detector-range adjustment. Confirm wavelength-dependent attenuation and power handling against the test setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch attenuation to the wavelength range of the source and detector. Optical density and exposure reduction vary with wavelength.\u003c\/li\u003e\n\u003cli\u003eFor high-power light sources, tell us the power density at the filter, beam size and operating conditions so we can assess a suitable optic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustom options\u003c\/h3\u003e\n\u003cp\u003eStart with this stock or sample-book design, then tell us what you need to change. We can discuss the wavelength bands, transmission, blocking, angle, glass material, size and operating conditions with you, and agree a specification for your custom filter.\u003c\/p\u003e\u003c\/section\u003e\u003ch3\u003eTransmission spectrum\u003c\/h3\u003e\u003ciframe src=\"https:\/\/charts.kupooptics.com\/LEE209.html\" title=\"LEE209 transmission spectrum with wavelength readout\" loading=\"lazy\" width=\"100%\" height=\"880\" style=\"border:0;width:100%;height:clamp(640px,calc(43vw + 320px),880px);\" referrerpolicy=\"no-referrer-when-downgrade\"\u003e\u003c\/iframe\u003e\u003csection class=\"ko-reviewed ko-product-faq\" aria-label=\"Product questions\"\u003e\u003ch2\u003eQuestions about LEE209\u003c\/h2\u003e\n\u003ch3\u003eHow much exposure reduction should I expect from LEE209?\u003c\/h3\u003e\n\u003cp\u003eThe sample calculation gives approximately 1.28-1.45 stops over 400-700 nm. Its optical density is approximately 0.39-0.44 over 400-700 nm. These estimates help you choose attenuation; check the result with your actual source and detector.\u003c\/p\u003e\n\u003ch3\u003eIs LEE209 equally neutral across blue, green and red?\u003c\/h3\u003e\n\u003cp\u003eThe measured transmission varies from 36.5-41.1% over 400-700 nm. That is the variation to assess when color balance matters. Compare the full visible curve with the wavelengths used by your source rather than treating the attenuation as perfectly flat.\u003c\/p\u003e\u003c\/section\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eDiscuss this filter with KUPO\u003c\/strong\u003e\u003c\/a\u003e - include the product reference, source wavelength, working angle and required dimensions.\u003c\/p\u003e\u003cstyle\u003e#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:27px;font-weight:500;line-height:1.4;letter-spacing:-.01em;color:#0c324b;background:#f0f6f9;padding:20px 24px;}#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title+p{border-bottom:0;}@media(max-width:650px){#MainContent .ko-reviewed\u003eh2.ko-catalog-description-title{font-size:24px;}}\u003c\/style\u003e","brand":"KUPO Optics","offers":[{"title":"Neutral Density (ND) Filter","offer_id":48516671308031,"sku":"LEE209","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/lee209-spectrum.jpg?v=1778712950"}],"url":"https:\/\/kupooptics.com\/collections\/beam-control-optics.oembed","provider":"KUPO Optics","version":"1.0","type":"link"}