... lens by borosilicate glass used as lamp shade,lamp cover,glass shade,light cover,light shade. lamp cover1.Raw material:Borosilicate glass,pyrex ... light direction.6.Application:Lighting system,electronics,industries,e.g.lamp cover,lamp shade,stage lens,led lens,reflector lens,sight lens ... sheet,glass cover,glass shade. Borosilicate glass Par20 /par30/par38 lamp cover