Specification Brand : STARTNOW BulletPoint1 : Type:Dia 36-38mm BulletPoint2 : Material:JSG1 Fused Silica (Quartz) BulletPoint3 : Wavelength:1064nm BulletPoint4 : Transmittance:99.5% BulletPoint5 : Notice:"Plus-H" is for large power machine,"Plus-Hq" is for high power machine Color : 10 PCS ItemName : Startnow Laser Protective Lens Fused Silica Quartz 35-38mm Diameter 37x7mm 10KW 15KW 20KW 30KW Laser Protection Windows (10 PCS, 35.5x5mm) ItemPackageDimensions_Height : 10 centimeters ItemPackageDimensions_Length : 18 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-classroom-optics-kits Manufacturer : STARTNOW PartNumber : 30 B ProductDescription : Fiber Laser Protective Lens Type:Dia 36-39mm Material:JSG1 Fused Silica (Quartz) Wavelength:1064nm Transmittance:99.5%,Laser protective lens, also called laser window and optical window, is an optical plane lens that protects electronic components, sensors and semiconductor components in the optical path. Window plate is one of the basic optical elements in optics. It does not change the optical magnification, but only affects the optical path. Mechanical properties such as light transmittance, surface accuracy, thickness, parallelism and substrate material are important parameters of window. Laser protective lens is an optical glass plate with two parallel surfaces formed after fine grinding and polishing. They can be used as protective elements in a variety of complex environments, and their high transmittance makes them have little effect on the visible light passing through. Commonly used coatings are anti-reflection film (AR) and anti-scratch film (AS), which can also improve the effect according to the needs of customers, and can be waterproof, dustproof and anti-scratch. ProductSiteLaunchDate : 2021-06-01T07:00:00.000Z Size : 35.5x5mm TargetAudienceKeyword1 : For laser cutting, laser marking industries. TargetAudienceKeyword2 : For laser welding and laser engraving industries UnspscCode : 45121603