LED package with front surface heat extractor
First Claim
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1. A light source, comprising:
- an LED die having at least one emitting surface;
an optical element including an input surface optically coupled to the at least one emitting surface, an output surface larger than the input surface, and at least one intermediate surface; and
a heat sink thermally coupled to the at least one intermediate surface.
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Abstract
Light sources are disclosed utilizing LED dies having at least one emitting surface. An optical element is disclosed for efficiently extracting light out of an LED die by controlling the angular distribution of the emitted light. The optical element has an input surface that is optically coupled to the emitting surface, an output surface that is larger in surface area than the input surface, and at least one intermediate surface. A heat sink thermally coupled to the intermediate surface of the optical element extracts heat from the emitting surface of the LED die via the optical element.
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Citations
50 Claims
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1. A light source, comprising:
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an LED die having at least one emitting surface;
an optical element including an input surface optically coupled to the at least one emitting surface, an output surface larger than the input surface, and at least one intermediate surface; and
a heat sink thermally coupled to the at least one intermediate surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A light source, comprising:
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an LED die having a primary emitting surface;
a transparent optical element including an input surface optically coupled to the primary emitting surface, an output surface larger than said input surface, and at least one intermediate surface; and
means for extracting heat out of the at least one intermediate surface. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A light source, comprising:
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an LED die having a primary emitting surface, a transparent optical element including an input surface optically coupled to the proximate the primary emitting surface, an output surface larger than said input surface, and at least one side surface disposed between the input surface and the output surface; and
means for extracting heat out of the at least one side surface. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification