Optical spherical mirror/lens wholesale plano concave/convex/objective/projection achromatic/camera/ ... /microscope custom lens Lens materials: optical glass(N-BK7,fused silica), Ge, Si, CaF2, ZnSe, ceramics,etcLens types: optical glass lens ... , biconcave lens, biconvex lens, projection lens, objective lens, miniscus lens, spherical lens, achromatic lens, cemented lens.doublet lens. camera lens, laser ...