Product Name: Custom UV Optical Quartz Glass Windows Ar Coated Bk7 Disk Model NO.: optical quartz glass windows Coating: Bk7 Windows Customized: Customized Certification: RoHS, ISO9001, CE Lenses Color: Clear Material: Optical Glass Shape: Flat Transmittance: >95% Type: Optical Windows Usage: Lighting, Medical, Optical, Photography Trademark: YBT Transport Package: Inner Packing----Special Protective Packing for Op Specification: customized Origin: Shen Yang Product Description Product DescriptionOptical windows are falt, plane parallel plates which are often used as protective barriers for electronic sensors or detectors from outside environments. When selecting windows, please consider materials, transmission, scattering, parallelism and resisitance to certain environment or mechanical properties of the substrate.N-BK7 windowsN-BK7 windows are ideally suited for industrial applications. Available uncoated or with a MgF2 anti-reflection coating, windows are often used as a protective element between two environments.Diameter0.2-300mmThickness0.1-100mmDimension tolerance+/-0.1mm or +/-0.02mmSurface quality (scratch & dig)60/40, 40/20 or betterClear aperture>85%, >90%Surface accuracyL/10 L/2 LParallelism+/-3' ,+/-30''Bevel0.1~0.3mm x 45 degreeCoatingAR, BBAR or CustomShenyang Ebetter Optics Co., Ltd. offers standard and high precision optical windows in round,square, wedge shapes. We also support custom made optical windows in a variety of substrates, such as UV Fused silica, N-BK7, Germanium(Ge), Silicon(Si),Zinc Selenide(ZnSe). The high precision parallelism of 10 arc seconds, surface quality of 10/5 and flatness of λ/20.Single layer or multi-layer anti-reflection coatings are available. N-BK7 windowsCertificateFAQ