Borosilicate glass or Pyrex used as automobile,len, plano lens, lamp shade,Sight lens, Front lens, Molded lens, aspheric lens 1. ... . Inside quality: clear and transparent, no mold marks, no inside bubble and dirts5. Function: Guide of the light beams e.g ... , Sight lens, Front lens, Refractor, Molded lens, Spot lens, Lamp cover, Lamp shade, Lighting shade, Lighting cover, glass cover, glass shade, glass ...