Projector type vehicle headlamp unit
First Claim
1. A projector type vehicle headlamp unit comprising:
- a plurality of light emitting diodes as light sources;
a reflector which reflects light from the light emitting diodes; and
a convex lens which emits the light reflected by the reflector forward, wherein the reflector has two first reflecting surfaces arranged in parallel, provided on the upper side at the back of an optical axis of the convex lens, formed inside a casing with a spheroidal curved surface or a free-form surface based on a spheroid, having a front part and a lower part being open, the two first reflecting surfaces are arranged by making first focal points of the first reflecting surfaces be alienated from each other in the horizontal direction, centering on the optical axis within an area of an effective diameter of the convex lens, and making second focal points thereof gradually come close to each other so as to be located inside the two first focal points, and the light emitting diodes includes two light emitting diodes respectively arranged near the first focal positions, with light emitting portions thereof facing the two first reflecting surfaces, respectively.
1 Assignment
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Accused Products
Abstract
A reflector is constructed by arranging two first reflecting surfaces. The two first reflecting surfaces are arranged by making first focal points F1 of the first reflecting surfaces be alienated from each other, centering on the optical axis Z within an area of an effective diameter R of a convex lens, and making second focal points F2 thereof gradually come close to each other so as to be located inside the two first focal points F1. An LED is formed of two LEDs respectively arranged near the first focal positions, with light emitting points F1 thereof facing one of the two first reflecting surfaces. The obtained light distribution pattern has double quantity of light, and does not have a non-emission part inside thereof, and the combined light of the two LEDs can solve a problem of color irregularity.
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Citations
4 Claims
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1. A projector type vehicle headlamp unit comprising:
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a plurality of light emitting diodes as light sources;
a reflector which reflects light from the light emitting diodes; and
a convex lens which emits the light reflected by the reflector forward, wherein the reflector has two first reflecting surfaces arranged in parallel, provided on the upper side at the back of an optical axis of the convex lens, formed inside a casing with a spheroidal curved surface or a free-form surface based on a spheroid, having a front part and a lower part being open, the two first reflecting surfaces are arranged by making first focal points of the first reflecting surfaces be alienated from each other in the horizontal direction, centering on the optical axis within an area of an effective diameter of the convex lens, and making second focal points thereof gradually come close to each other so as to be located inside the two first focal points, and the light emitting diodes includes two light emitting diodes respectively arranged near the first focal positions, with light emitting portions thereof facing the two first reflecting surfaces, respectively. - View Dependent Claims (2, 3, 4)
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Specification