... 4.Moulded,Polished 5.No scratches Light cover and Lamp cover by Pyrex 1. Light cover material: Optical glass,Pyrex,Borofloat2. ... visible light5. Function of Light cover: used as sight glass,glass window,light cover,lamp cover,front lens,led lens,Glass lens6 ... . Application of light cover and lamp cover: system, Electronics, ...