Product Name: Znse Plano Convex Cylindrical Lens, Optical Lens Model NO.: D5~D300mm Coating: Ar or Reflective Coating Upon Request Customized: Customized Certification: RoHS, ISO9001 Material: Zns CVD Zns Znse Znse Shape: Single-lens Transmittance: >95% Type: Cylinder Lense Usage: Optical Trademark: ICC Origin: Qinhuangdao China HS Code: 9001909090 Product Description Zinc Sulfide (ZnS), Regular Grade. A Chemically Vapor Deposited (CVD) material, ZnS (regular) has good imaging quality over the 8-12µm band. It also transmits in the 3-5µm band, but with higher absorption and scatter. The material exhibits high strength and hardness, and good resistance to hostile environments. The ZnS regular is 50% harder than ZnS, multi-spectral grade and twice and hard as ZnSe. ZnS regular does not transmit well in the visible spectral region. It has the relatively low cost of about 2/3 the price of ZnS, multi-spectral grade or ZnSe. Zinc Sulfide is mainly used for windows and lenses in the 8µm to 12µm range. The reflective index is near 2.2. Zinc Sulfide is particularly strong and can be used for infrared windows in high speed aircraft and vacuum applications.Processing machine UV-VIS materialCDGM, Corning ,SCHOTT,HOYA,OHARA , and so onIR material:ZnSe,ZNS,CaF2 and so onDiameter:From 1mm ~100 mmDesign Wavelength:CustomizedDiameter Tolerance:+0.0/-0.1mm or CustomizedParaxial Focal Length:±2% or customizedCentration:≥1arc minutesSurface Figure :λ/4 -λ/10@ 632.8 nmSurface Quality:60/40-10/5Clear Aperture:>90%Bevel:<0.25mm X 45°Coating:AR&HRCustomized