1.LED lens 2.Glass lens as Light cover 3.Shape:Plano,Convex,Concave 4.Moulded,Polished lens 5. ... Resistant to high temperature LED Lens for Light cover1) Materila for Led lens: Optical glass like BK-7,B270 ... ,Pyrex 3.3,Crystal glass2) Techniques for Led lens: by Molding, Grinding, Polishing3) Quality of Led lens ...