Polished coated lens/windows |
Material | Ge, Si, ZnSe, ZnS,Chalcogenide glass |
Specification | Customized |
Dia tol. | W0.03 mm |
Radius of curvature | ASag< 0.005 |
Center thickness tol. | <0.025 mm |
Variation of edge thickness | <0.03 mm |
Surface finishing | 40/20 |
Penetration rate | 1.Double-sided antireflection film N97% 2.Carbon film + permeable film N90% |
Surface type | N<2 AN<1 |
Flatness | <10um |
Center Variation | 1.Window<30" 2.Penetration^<1.5* |