LED PACKAGE WITH CONVERGING EXTRACTOR
First Claim
1. A light source, comprising:
- an LED die having an emitting surface; and
an extractor comprising a plurality of optical elements each having a base, an apex smaller than the base, and a converging side extending between the base and the apex, wherein the extractor has an extractor base no greater in size than the emitting surface, and wherein the extractor base is optically coupled to the emitting surface forming an interface between the extractor and the LED die.
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Abstract
In one aspect, the present application discloses a light source comprising an LED die optically coupled to an extractor comprising a plurality of optical elements each having a base, an apex smaller than the base, and a converging side extending between the base and the apex. The extractor base is no greater in size than the emitting surface of the LED die. In another aspect, methods of making light sources are disclosed, comprising the steps of providing an LED die having an emitting surface; forming a plurality of optical elements each having a base, an apex smaller than the base, and a converging side extending between the base and the apex; arranging the plurality of optical elements to form an extractor, the extractor having an extractor base no greater in size than the emitting surface; and optically coupling the extractor base to the emitting surface of the LED die.
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Citations
28 Claims
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1. A light source, comprising:
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an LED die having an emitting surface; and
an extractor comprising a plurality of optical elements each having a base, an apex smaller than the base, and a converging side extending between the base and the apex, wherein the extractor has an extractor base no greater in size than the emitting surface, and wherein the extractor base is optically coupled to the emitting surface forming an interface between the extractor and the LED die. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of making a light source, comprising the steps of:
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providing an LED die having an emitting surface;
forming a plurality of optical elements each having a base, an apex smaller than the base, and a converging side extending between the base and the apex;
arranging the plurality of optical elements to form an extractor having an extractor base no greater in size than the emitting surface; and
optically coupling the extractor base to the emitting surface of the LED die. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A light source, comprising:
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an LED die having an emitting surface;
an extractor comprising a plurality of optical elements each having a base, an apex smaller than the base, and a converging side extending between the base and the apex; and
an encapsulant material encapsulating the LED die and the extractor, wherein the extractor includes open portions for providing electrical contacts for the LED die, wherein the extractor has an extractor base no greater in size than the emitting surface, wherein the extractor base is optically coupled to the emitting surface forming an interface between the extractor and the LED die, and wherein the extractor is bonded to the LED die at the emitting surface wherein the light source emits light in a side emitting pattern, and further wherein more than 50 percent of the emitted light is emitted at a polar angle greater than or equal to 45°
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Specification