{"product_id":"mbp-a49","title":"MBP-A49 Dual-window short-wave infrared filter","description":"\u003cnav aria-label=\"Product family\"\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products\"\u003eAll optics\u003c\/a\u003e \/ \u003ca href=\"\/collections\/multi-bandpass-filter\"\u003eMulti-Bandpass 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\"\u003eDual-window short-wave infrared filter (MBP-A49)\u003c\/h2\u003e\n\u003cp\u003eMBP-A49 is a multi-region spectral filter. The reference spectrum shows multiple high-transmission regions at approximately 990-1140 nm; 1333-1579 nm. Light from these bands passes through the same optic. Check every band against your light source and detector. To measure the bands separately, use alternating light sources or separate detection paths.\u003c\/p\u003e\n\u003ch3\u003eOptical performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured wavelength range:\u003c\/strong\u003e 300-1800 nm. Performance outside this measured interval is not established by this curve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain band at half-peak transmission:\u003c\/strong\u003e Approximately 1324.1-1590 nm, giving a full width at half maximum (FWHM) of approximately 265.9 nm. This describes the main band only; other transmitted regions may remain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or above 80% transmission:\u003c\/strong\u003e 990-1140 nm; 1333-1579 nm. Approximate measured intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelected regions at or below 5% transmission:\u003c\/strong\u003e 300-960 nm; 1170-1297 nm; 1625-1800 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 99.6% at 1475 nm. Peak wavelength is not the same as a defined centre wavelength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 800-965 nm:\u003c\/strong\u003e 0.703%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1185-1305 nm:\u003c\/strong\u003e 1.504%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1645-1800 nm:\u003c\/strong\u003e 0.384%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1010-1135 nm:\u003c\/strong\u003e 98.373%. Calculated from the factory sample data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage measured transmission, 1370-1570 nm:\u003c\/strong\u003e 98.983%. 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\u003eShort-wave infrared material inspection:\u003c\/strong\u003e Consider the two transmitted regions for a source and infrared detector used in material-contrast experiments. Match the illumination and detector response to the confirmed band limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-wavelength sensing:\u003c\/strong\u003e Evaluate sharing one optic between signals in the two short-wave infrared regions. Use source modulation or separate detection paths if independent channel readings are required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpectroscopy-window selection:\u003c\/strong\u003e Compare the transmitted windows with the actual feature and reference wavelengths required by the measurement. Confirm the intervening rejection before finalizing the optical design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing this filter\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdditional regions reach at least 50% transmission at approximately 983-1147 nm. Include these in the detector and blocking assessment.\u003c\/li\u003e\n\u003cli\u003eCheck the full wavelength range of your light source, the wavelengths your detector responds to, and how much unwanted light you need to block. Use the full curve when choosing a filter; the product code and peak do not tell the whole story.\u003c\/li\u003e\n\u003cli\u003eTell us the angle at which light reaches the filter and whether the beam is parallel or converging. For demanding rejection or high-power use, confirm the required blocking and power-handling specifications.\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\/MBP-A49.html\" title=\"MBP-A49 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 MBP-A49\u003c\/h2\u003e\n\u003ch3\u003eWhere does MBP-A49 transmit at least 80% in the measured curve?\u003c\/h3\u003e\n\u003cp\u003eThe measured regions at or above 80% transmission are 990-1140 nm; 1333-1579 nm. They are measured intervals, not guaranteed passband tolerances. Compare the full curve with the signal wavelengths you need to retain.\u003c\/p\u003e\n\u003ch3\u003eCould MBP-A49 pass light outside its main band?\u003c\/h3\u003e\n\u003cp\u003eFor MBP-A49, additional regions reach at least 50% transmission at approximately 983-1147 nm. If your detector responds there, include that light in the background assessment or discuss an additional blocking requirement.\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":"Multi-Bandpass Filter \/ 2-Band","offer_id":48516667474175,"sku":"MBP-A49","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/mbp-a49-spectrum.jpg?v=1778712865","url":"https:\/\/kupooptics.com\/products\/mbp-a49","provider":"KUPO Optics","version":"1.0","type":"link"}