... lens: Material:CVD ZnSe D25.4mm,F.L 63.5mm,E.T 3mm Shape:Spherical Application:Laser cutting, welding, engraving Laser focus lens ... specifications: Apply CO2 laser focusing lens ... series products: Plano-convex and Plano-concave mirror and crescent lens. Capability:Can stand high-power density, the film is ...