Patent ID: 7648262

Claim:
A lamp unit of a vehicle headlamp comprising: a convex lens arranged on an optical axis extending in a front and rear direction of the lamp unit; and a light source arranged rearward from the convex lens, wherein direct emitting light from the light source to the convex lens is emitted toward a front side of the lamp unit, wherein the convex lens is configured to emit the light from the light source as substantially parallel light in a vertical face and emit as light diffused to left and right sides in a horizontal face, the convex lens comprises a pair of lens regions on left and right sides of the optical axis of the convex lens, at least a partial region of one of the lens regions is configured as an upper deflecting region that deflects the light in a direction further upwards than a direction of light emitted from the other of the lens regions, and wherein the convex lens comprises a boundary stepped portion extending in a vertical direction, and the boundary stepped portion partitions the convex lens into the upper deflecting region and the other of the lens regions.