... objective/projection achromatic/camera/led/microscope custom lens Lens materials: optical glass(N-BK7,fused silica), Ge, Si, CaF2, ... ZnSe, ceramics,etcLens types: optical glass lens, plano convex lens, plano concave lens, biconcave lens ... lens, plastic lens, custom lens, etc.Optical coating such as AR coating or aluminum coating is available by customer requirement. The table ...