{"product_id":"new-edmund-optics-39-250-vis-nir-ar-coated-sapphire-window-35mm-dia-1mm-thick-1","title":"NEW Edmund Optics 39-250 VIS-NIR AR Coated Sapphire Window 35mm Dia 1mm Thick","description":"\u003ch1\u003eNEW Edmund Optics 39-250 VIS-NIR AR Coated Sapphire Window 35mm Dia 1mm Thick\u003c\/h1\u003e\u003cp\u003e\u003cspan class=\"citation-2738 citation-end-2738\"\u003e Brand: Edmund Optics\u003csource-footnote ng-version=\"0.0.0-PLACEHOLDER\" _nghost-ng-c3483152706=\"\"\u003e\u003csup _ngcontent-ng-c3483152706=\"\" class=\"superscript\" data-turn-source-index=\"2\"\u003e\u003c\/sup\u003e\u003c\/source-footnote\u003e\u003c\/span\u003e  Stock Number: 39-250 (39250)  Substrate Material: Single Crystal Sapphire (Al2O3)  Coating Type: Broadband Anti-Reflection Coating on Both Sides (VIS-NIR AR Ctd)  Wavelength Range: 400 to 1000 nm  Coating Performance: Absolute reflectance less than 0.25 percent at 880 nm; Average reflectance less than 1.25 percent across specified bands  Window Diameter: 35.00 mm  Window Thickness: 1.00 mm  Clear Aperture: Greater than 31.50 mm (90 percent of overall diameter)  Parallelism: Less than 3.5 arcminutes  Surface Quality: 80-50 Scratch-Dig  Surface Flatness: 2 Lambda typical  Apparent Hardness: Knoop Hardness 1900 kilograms per square millimeter\u003c\/p\u003e \u003cul\u003e\u003c\/ul\u003e\u003cdiv class=\"selroattributelist\"\u003e\u003c\/div\u003e\u003cdiv class=\"selroattributelist\"\u003eNOS, surplus\u003c\/div\u003e","brand":"Edmund Optics","offers":[{"title":"Default Title","offer_id":46108678619272,"sku":"F-120-RBJ-9-DB","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1919\/1299\/files\/5271940_a4ed4222-2bbd-4019-b3f5-e3163601c3580.jpg?v=1781316755","url":"https:\/\/vbindustrialsupply.com\/products\/new-edmund-optics-39-250-vis-nir-ar-coated-sapphire-window-35mm-dia-1mm-thick-1","provider":"VB Industrial Supply","version":"1.0","type":"link"}