We can make all kinds of optical lens(with coatings on surface) according to your requirements. Shape: Biconvex, Plano, Plano-convex, Positive Meniscus, Negative Meniscus, Plano-concave, BiconcaveMaterial: Optical GlassDiameter: within 1.5 metersEffective aperture: >90%Color: customizedSurface quality: 40/20Coating: anti-reflection, high reflection , broadband pass, IR-cut, UV-cut lens