... lens by borosilicate glass used as lamp shade,lamp cover,glass shade,light cover,light shade. lamp cover1.Raw material: Borosilicate glass,pyrex2 ... and transparent5.Function of glass lens:guide of light direction.6.Application: Lighting system,electronics,industries,e.g.lamp cover,lamp shade,stage ... ,light shade,light cover,glass sheet,glass cover, glass shade. lamp cover