{"product_id":"silicon-reflective-longpass-filter-12-5mm-1050nm-od3","title":"Silicon Reflective Longpass Filter, Ø12.5 mm, 1050 nm, OD 3.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eLongpass filters provide a sharp cut-on at a specific wavelength. Widely used for order sorting, they isolate broad spectral regions while transmitting the desired energy and blocking unwanted light. Built on an IR-transmitting optical substrate coated with a hard, durable outer-surface dielectric film, they withstand routine cleaning and suit any high-quality optical assembly — making them especially well suited to FTIR spectroscopy and thermal imaging. Coatings are available on silicon or germanium substrates.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFTIR spectroscopy\u003c\/li\u003e\n  \u003cli\u003eThermal imaging\u003c\/li\u003e\n  \u003cli\u003eOrder sorting \u0026amp; spectral-region isolation\u003c\/li\u003e\n  \u003cli\u003eMid-IR \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Silicon\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Dielectric Coating (reflective longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø12.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 1.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1050 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 3.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;85%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1050 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1100–2100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1050 nm, T\u0026gt;85%@1150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e \u0026lt;10 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e 3–5 λ @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e\n","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48192975962266,"sku":"O-LPF-12.5-1.0-BL508","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664687-longpass-main.png?v=1780463658","url":"https:\/\/waveqvanta.com\/products\/silicon-reflective-longpass-filter-12-5mm-1050nm-od3","provider":"WaveQuanta","version":"1.0","type":"link"}