High Power LED Optical Lens 1.high efficiency energy-saving 2.No-radiation 3.long brightness 4.Excellent color rendering high power led optical lens1.processing:by design , molding , griding, polishing , inspection ,testing and so on .2.Material:PMMA3.Tansmittance 93%4.working life:50000hrs. 5.Demensions:diameter ,high ,edge thickness . 6.Application:street lights, tunnel lamps ,spotlight, ...