2012 NEW led light lens 1,high quality with good price 2,optical grade PMMA 3,high transmittance 4,easy installation High power led collimator lens,led fresnel lens led optical lens,led light diffuser lens 1,LED lens,high quality with good price 2,optical grade PMMA 3,high transmittance 4,easy installation 1. DxH(mm): 28.8x16.52. Degree: 20° 30° 40° 50° 60°3. Material:Optical PMMA