Light source and vehicle lamp
First Claim
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1. A light source comprising:
- a base;
a first plurality of LED elements located adjacent the base;
a second plurality of LED elements located adjacent the base, each of the second plurality of LED elements dimensioned smaller than each of the first plurality of LED elements; and
wherein the first plurality of LED elements are arranged in a stepped fashion with respect to an optical axis of the light source and the second plurality of LED elements are arranged in an L-shaped pattern.
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Abstract
A light source apparatus for vehicle lamps and particularly vehicle headlights can include a plurality of LED elements can be mounted in a cavity located on a base surface or on a base. Each of the LED elements can be arranged in such a manner as to form an emission shape and a brightness distribution that is suited for a light distribution pattern, and especially a light distribution pattern for a vehicle headlight.
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Citations
20 Claims
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1. A light source comprising:
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a base; a first plurality of LED elements located adjacent the base; a second plurality of LED elements located adjacent the base, each of the second plurality of LED elements dimensioned smaller than each of the first plurality of LED elements; and wherein the first plurality of LED elements are arranged in a stepped fashion with respect to an optical axis of the light source and the second plurality of LED elements are arranged in an L-shaped pattern. - View Dependent Claims (8)
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- 2. The light source according to claiml, further comprising a light shielding device adjacent the base and including a first edge and a second edge non-parallel to the first edge and abutting the first edge at a junction.
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10. A light source comprising:
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a base having an upper end and a lower end as viewed along an optical axis of the light source; a primary LED element disposed closer to the upper end than to the lower end, and a plurality of secondary LED elements, each of the secondary LED elements disposed closer to the lower end than to the upper end; and a light shielding device located adjacent the base and including a first edge and a second edge non-parallel to the first edge and abutting the first edge at a junction, wherein each of the plurality of secondary LED elements is disposed along at least one of the first edge and the second edge of the light shielding device. - View Dependent Claims (11, 12, 13, 14, 19, 20)
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15. A vehicle headlight comprising:
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a first convex lens having a first focal point; an LED light source spaced from the first focal point; a light shielding device located substantially at the first focal point and including a first edge and a second edge non-parallel to the first edge and abutting the first edge at a junction; and a second convex lens system intermediate the LED light source and the light shielding device, the second convex lens system having a second focal point and a third focal point, wherein the second focal point is located substantially at the first focal point, and the third focal point is located substantially at the LED light source. - View Dependent Claims (16, 17)
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18. The light source according to claiml, further comprising;
a drive device configured to supply different drive currents to the first plurality of LED elements and the second plurality of LED elements, wherein at least one of the first plurality of LED elements and the second plurality of LED elements is driven by a different drive current as compared to another of the first plurality of LED elements and the second plurality of LED elements.
Specification