Patent ID: 7104672
Filing Date: 2006-09-12
Classification: F21V,F21W,G02B,G09F,H01L

Abstract:
1. A light source arrangement, comprising: a lens body having an illumination portion defining a light projecting surface, and at least a diffraction portion defining a light diffraction surface inclinedly extended at a diffraction angle, wherein a diffraction density of said illumination portion is different from that of said diffraction portion; and an illumination unit being covered by said lens body for radially generating light towards said illumination portion, wherein a first portion of said light emitted from said illumination unit penetrates through said illumination portion to said light projecting surface thereof while a second portion of said light penetrates through said illumination portion to said diffraction portion, wherein when said light reaches said light diffraction surface of said diffraction portion at an angle larger than said diffraction angle, said light is substantially reflected at said light diffraction surface back towards said light projecting surface, such that said light from said illumination unit is converged to project at said light projecting surface of said lens body.