Patent ID: 7883250

Claim:
A lamp unit for vehicles of projector type using a semiconductor light source as a light source, comprising: a reflector having an ellipse reflect surface; a semiconductor light source arranged in such a way that its light emitting part is positioned at a first focus of the ellipse reflect surface; a projection lens with its lens light axis in a horizontal direction for projecting a predetermined distributed light pattern toward a predetermined direction; a planar reflect surface arranged between the projection lens and its focus in such a way that the planar reflect surface intersects the light axis of the projection lens and reflects the predetermined distributed light pattern toward one side of the projection lens; a light shutout member arranged between the semiconductor light source and the projection lens for shutting out all straight light from the semiconductor light source from illuminating toward the projection lens, the straight light directed straight from the semiconductor light source toward the projection lens; the focus of the projection lens exists as a fictitious focus at a symmetrical position with respect to the planar reflect surface by way of the planar reflect surface, the fictitious focus is positioned at a second focus of the ellipse reflect surface, the lens light axis exists as a fictitious lens light axis intersecting the lens light axis orthogonally by way of the planar reflect surface, the fictitious lens light axis is consistent with the light axis of the ellipse reflect surface; and a supplemental reflect surface arranged on the light shutout member for reflecting the light from the semiconductor light source toward a side of a shade of the lamp unit.