... work is :1. because the LED point lamp-house shine the angle is big,the emanative ray ... fresnel lens is opposite to the identical LED lamp, the different of the focal length and the ... projection clock, torch light, solar street lamps, miner's lamp, garden lights, surgical lamps, projection lamps, lamps and ... , high light transmission rate of 99%3. U.S. LUMILEDS-LED special lens, special lens LED Seoul, ...