... glass, Pyrex, Borofloat, 2. 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,temper lens6. Application ...