Patent ID: 7404657
Filing Date: 2008-07-29
Classification: F21S

Abstract:
1. A vehicle headlamp comprising: a projection lens disposed on an optical axis extending in a longitudinal direction of the vehicle; a light source disposed on a rear side of a rear side focal point of the projection lens; a reflector which reflects a light emitted from the light source to a forward direction and toward the optical axis; and a shade disposed such that an upper end edge thereof extends near the rear side focal point of the projection lens, wherein the shade shields a part of the light reflected from the reflector, the light source is movable between a reference position located on the optical axis and a forward shift position located on a forward side of the reference position, and the reflector has an auxiliary reflecting surface located on a lower side of the optical axis, wherein the an auxiliary reflecting surface has a vertical section of an elliptical shape having a first focal point set at a point near the forward shift position and a second focal point set near the rear side focal point of the projection lens; wherein the reflector includes a primary reflecting surface, a sectional shape of the primary reflecting surface including a first focal point set at the reference position, the sectional shape including the optical axis, wherein the sectional shape of the primary reflecting surface has a second focal point set at a point forward of the rear side focal point of the projection lens.