... lens 1. Raw material: Borosilicate glass, Pyrex, Borofloat, Optical glass, Crystal glass2. Processing: by Molding, Grinding, ... Polishing3. Surface quality: optical surface quality and well controlled tolerance4. Inside quality: ... Meniscus lens, flat lens, round lens, Optical lens, Glass lens,Pattern lens,automobile lens6. Application: Lighting system, Electronics ...