... , Pyrex, Borofloat, float glass2. Processing: by Grinding, Polishing3. Surface quality: optical surface quality and well controlled tolerance4. Inside quality: clear and ... beams e.g. Fresnel lens, Plano lens, Bi convex lens, Bi concave lens, Prism, Cylindrical lens, Ball lens, Spherical lens, Aspheric lens, Meniscus lensoptical lens,round lens,glass lens,lens6. Application: Lighting ...