... 1. Raw material: Borosilicate glass, Pyrex, Borofloat, Optical glass, Crystal glass2. Processing: by Molding, Grinding, Polishing3. Surface quality: optical surface quality and well controlled ... , Ball lens, Spherical lens, Aspheric lens, Meniscus lens, flat lens, round lens, Optical lens, Glass lens6. Application: Lighting system, Electronics, Electrical apparatus, Industries ...