... cover 3.Shape:Plano,Convex,Concave 4.Moulded,Polished lens 5.Resistant to high temperature LED Lens for Light cover1) Materila for Led lens ... like BK-7,B270,Pyrex 3.3,Crystal glass2) Techniques for Led lens: by Molding, Grinding, Polishing3) Quality of Led ... and transimission4) Series of Led lens:Including Fresnel lens,Plano lens, Bi convex lens, Bi concave lens,Cylindrical lens, Ball lens, ...