Vehicle lamp unit and vehicle headlamp using the same
AssigneeIchikoh Industries, Ltd.
InventorsYasufumi Suzuki, Yasuhiro Okubo
Life of this patent
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Abstract
A vehicle lamp unit includes a reflective surface based on an ellipse; a semiconductor light source of which a light emitting portion is provided at a first focal point of the reflective surface or a vicinity of the first focal point; 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. An emission direction of a maximum light emission intensity from among light intensities of the semiconductor light source is inclined in a direction opposite to the projection lens with respect to an optical axis of the projection lens.
Claims6
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 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;
- 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
- an emission direction of a maximum light emission intensity from among light intensities of the semiconductor light source is inclined in a direction opposite to the projection lens with respect to an optical axis of the projection lens.
A vehicle headlamp comprising:
- a lamp housing and a lamp lens that form a lamp room;
- and
- a plurality of vehicle lamp units each of which includes
- a reflective surface based on an ellipse, the reflective surface having a first focal point and a second focal point;
- a semiconductor light source 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;
- 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
- an emission direction of a maximum light emission intensity from among light intensities of the semiconductor light source is inclined in a direction opposite to the projection lens with respect to an optical axis of the projection lens, and
- the vehicle lamp units are arranged in the lamp room.
Dependencies are inferred from the claim text.