Patent ID: 8142056
Filing Date: 2012-03-27
Classification: F21V,F21Y,G02B,H01L

Abstract:
1. A high efficiency refraction body comprising: a light source chamber having an inner top formed with a transmission surface and an inner wall around said light source chamber; a main refraction surface formed above said light source chamber and having a V-shaped cross-section; a first refraction surface opposite to said main refraction surface and having a first angle with said main refraction surface thereby causing light from said light source chamber being totally reflected through said main refraction surface to be refracted out said high efficiency refraction body through said first refraction surface; a second refraction surface which is curved outwardly and adjacent to said first refraction surface and having a second angle with said first refraction surface thereby causing light from said light source chamber to be refracted out of said high efficiency refraction body through said second refraction surface; and a third refraction surface adjacent to said second refraction surface and having a third angle with said second refraction surface, said third refraction surface being parallel to said inner wall of said light source chamber thereby causing light from said light source chamber to be refracted out said high efficiency refraction body through said third refraction surface.