Patent ID: 7566152
Filing Date: 2009-07-28
Classification: F21S,F21Y,H01L

Abstract:
1. A vehicular lamp unit comprising: a light source module comprised of a substrate and a plurality of layers disposed on said substrate and include at least one light-emitting layer, and an optical element for projecting an image of light emitted from said light source module to a front of said vehicular lamp unit as an inverted image; wherein a subwavelength grating that reduces reflection of light is formed on one of surfaces of said plurality of layers of said light source module, a formation density of said subwavelength grating is varied from position to position so as to vary a distribution of light emission intensity in the inverted image projected to the front, said lamp unit is a direct projection lamp unit in which said optical element is a projection lens, and said light source module is disposed near a focal point of said projection lens, and the projection lens creates an enlarged image of the opposing surface which is the top layer of the light source module.