Patent ID: 7862217
Filing Date: 2011-01-04
Classification: F21S,F21Y

Abstract:
1. A vehicle lamp unit comprising: a reflective surface based on an ellipse, the reflective surface having a first focal point and a second focal point; a semiconductor light source for the vehicle lamp unit of which a light emitting portion is provided at the first focal point of the reflective surface or a vicinity of the first focal point, the semiconductor light source having different light emission directions including a maximum emission direction having a maximum light emission intensity; and a projection lens that projects a reflected light that is a light emitted from the semiconductor light source and reflected by the reflective surface to outside, wherein the maximum emission direction is inclined in a direction opposite to the projection lens with respect to an optical axis of the projection lens, a light ray emitted directly from the semiconductor light source in the maximum emission direction crosses the optical axis of the projection lens at a distance from the first focal point of the reflective surface, and the light ray emitted directly from the semiconductor light source in the maximum emission direction crosses the optical axis of the projection lens at the distance from the first focal point of the reflective surface before the light ray is reflected by the reflective surface.