... shape: customer's requirement 3,Lead Time: 30 days 1, Techniques of Optical lens: by Molding, Grinding, Polishing ... 2, Shape of Optical lens: Plano lens,bi convex lens,bi ... ball lens,Spherial lens 3, Inside quality of Optical lens: clear and transparent, no mold marks, ... bubble and dirts, 4, Function of Optical lens : Lighting splitting,magnifying etc. 5, High transimission ...