Bk7 /K9/Jgs1/ Sapphire Porro Prism for Telescope Binoculars

BK7 /K9/JGS1/ sapphire Porro Prism for Telescope BinocularsPorro Prism is composed of one large face and two roof faces which are mutually vertical. Beam enters the large face of the prism then hits on the roof, by total internal reflection twice from the roof, the beam exits again through the large face.Optical window materials comparison: Material optical glassDimensionCustomizedDiameter Tolerance+0.1, -0.1 mmThickness Tolerance+0.1, -0.1 mmAngle Tolerance±30 Arc SecondsSurface Flatness1/4 L  @632.8nmSurface Quality60-40 scratch and digProtective Bevel0.25 mm x 45°CoatingCustomizedOther ItemsFactory informationChangchun Yutai Optics Co.,Ltd. is a manufacturer with ISO9001 certification. We are specialized in high-performance optical components include lens, mirrors, filters, windows and prisms which are specified by customers. YutaI's items are widely used in imaging, defense, medical, laser and industry market.As a fast-growing supplier in optics, Yutai Optics has quickly established itself as a leader in optical components with advanced technology and quality control ability as Yutai aims to provide professional service and good quality items to meet customers' request. Yutai has already established long-term cooperative relation with many powerful companies all over the world.Our AdvantageSales TeamYutai Optics has a professinal sales team with excellent service, we tracking from inquiry to delivery of items.We try our best to meet each customers'request.              Production TeamYutai Optics has many experienced engineers and advanced machines, they are the important guarantee for the higher quality products.Our advanced production machines list: Ring polishing machine, Single axis machine,  Two axis machine, Four axis machine,Centering edging machine,Mechanical milling machine,Spectrograph,  Grinding machine,nanotech.250upl,talysurfi120.                                                                                       Inspection TeamAdvanced testing equipment and methods are important guarantee for the production of high-precision products.Our testing machine is ZYGO, Stereo interferometer,Horizontal interferometer.We provide testing report for each batch for your items. Process for most opticsMaterial-cutting-rounding-milling-grinding-polishing-edging-cleaning-coating-gluing-edging-blacking-accembly-packing-shipping Packaging & Shipping 1 Package Detail: A. Standard carbon and envelop with plastic foam.                                B. Safety green carton.                                C. Customized.   2 Delivery Detail: Within 30 days.(Also depand on the quantity)  Payment: 2 Delivery Detail: Within 30 days.(Also depand on the quantity)/* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1