{"product_id":"bh-a28","title":"BH-A28 IR Cut-off Filter","description":"\u003ch2\u003eBH-A28 — IR Cut-off Filters\u003c\/h2\u003e\u003cp\u003eBH-A28 transmits visible light across the measured 420–615 nm region and suppresses near-infrared transmission over 700–1100 nm. Use the full curve to assess the source and detector combination, including wavelengths beyond the specified blocking bands.\u003c\/p\u003e\u003ch2\u003eOptical performance\u003c\/h2\u003e\u003ch3\u003eVisible transmission, 420–615 nm\u003c\/h3\u003e\u003cp\u003e96.001% average T. Mean of the measured sample points across this interval.\u003c\/p\u003e\u003ch3\u003eNear-IR blocking, 700–1000 nm\u003c\/h3\u003e\u003cp\u003e1.176% maximum T. Highest measured transmission in this interval.\u003c\/p\u003e\u003ch3\u003eExtended IR blocking, 1000–1100 nm\u003c\/h3\u003e\u003cp\u003e1.427% maximum T. Highest measured transmission in this interval.\u003c\/p\u003e\u003ch3\u003eMeasured 50% edge\u003c\/h3\u003e\u003cp\u003eApproximately 644 nm. Derived from the sample curve.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003ch3\u003eVisible-light cameras\u003c\/h3\u003e\u003cp\u003eEvaluate where high visible transmission is needed while suppressing near-infrared response through the measured 700–1100 nm interval.\u003c\/p\u003e\u003ch3\u003eIndustrial inspection\u003c\/h3\u003e\u003cp\u003eCompare the optical source, sensor sensitivity and working angle with the full measured response before specifying the assembly.\u003c\/p\u003e","brand":"KUPO Optics","offers":[{"title":"Default Title","offer_id":50677757411583,"sku":"BH-A28","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/8651\/1359\/files\/bh-a28-spectrum.png?v=1792133825","url":"https:\/\/kupooptics.com\/products\/bh-a28","provider":"KUPO Optics","version":"1.0","type":"link"}