Optical lens for Optics1) Materila for Optical lens: Optical glass like BK-7,B270,Pyrex 3.3,Crystal glass2) Techniques for Optical lens: by Molding, Grinding, Polishing3) Quality of Optical lens : High surface quality and transimission4) Series of Optical lens:Including Fresnel lens,Plano lens, Bi convex lens, Bi concave lens, Prism,..