Led illumination engine using a reflector
First Claim
1. An illumination engine comprising:
- a first source of electro-luminescence;
a first reflector having a first and second focal points;
a first light pipe having an first input end and a first output end;
said first source of electro-luminescence disposed proximate to said first focal point of said first reflector to emit rays of radiation in a first range of wavelengths that reflect from said first reflector and converge substantially at said second focal point;
said first input end being located proximate to said second focal point to collect substantially all of said radiation; and
wherein said first output end transmits substantially all of said radiation.
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0 Petitions
Accused Products
Abstract
An illumination engine for a projection display using light emitting diodes (LEDs) that includes a reflector having a first and second focal points, a source of electro-luminescence located proximate to the first focal point to emit rays of radiation in a first range of wavelengths that reflect from the reflector and converge substantially at the second focal point, and a light pipe having an first input end and a first output end, the first input end being located proximate to the second focal point to collect substantially all of the radiation and wherein the first output end transmits substantially all of the radiation. The illumination system may further include a substrate having a first side, a platform disposed proximate to the first side of the substrate, and a plurality of reflectors each having a first and second focal points disposed in the platform, each of the first and second focal points disposed proximate to the first side of the substrate, a plurality of sources of electro-luminescence disposed on the first side of the substrate, each of the sources of electro-luminescence disposed substantially coincident with a corresponding one of the first focal points to emit rays of electromagnetic radiation that reflect from a corresponding one of the plurality of reflectors and converges substantially at a corresponding one of the second focal points, a plurality of light pipes disposed in the substrate, each of the light pipes having an input end and an output end, each of the input ends disposed substantially coincident with a corresponding one of the second focal points to collect substantially all of the radiation, wherein each of the output ends transmits substantially all of the radiation emitted by a corresponding one of the plurality of sources.
72 Citations
139 Claims
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1. An illumination engine comprising:
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a first source of electro-luminescence;
a first reflector having a first and second focal points;
a first light pipe having an first input end and a first output end;
said first source of electro-luminescence disposed proximate to said first focal point of said first reflector to emit rays of radiation in a first range of wavelengths that reflect from said first reflector and converge substantially at said second focal point;
said first input end being located proximate to said second focal point to collect substantially all of said radiation; and
wherein said first output end transmits substantially all of said radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103)
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104. An illumination system comprising:
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a substrate having a first side;
a platform disposed proximate to said first side of said substrate;
a plurality of reflectors each having a first and second focal points disposed in said platform, each of said first and second focal points disposed proximate to said first side of said substrate;
a plurality of sources of electro-luminescence disposed on said first side of said substrate, each of said sources of electro-luminescence disposed substantially coincident with a corresponding one of said first focal points to emit rays of electromagnetic radiation that reflect from a corresponding one of said plurality of reflectors and converges substantially at a corresponding one of said second focal points;
a plurality of light pipes disposed in said substrate, each of said light pipes having an input end and an output end, each of said input ends disposed substantially coincident with a corresponding one of said second focal points to collect substantially all of said radiation;
wherein each of said output ends transmits substantially all of said radiation emitted by a corresponding one of said plurality of sources. - View Dependent Claims (105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132)
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133. A method of illumination comprising the steps of:
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positioning a source of electro-luminescent radiation at a first focal point of a reflector;
producing rays of radiation by said source;
reflecting said rays of radiation by said reflector toward a second focal point of said reflector;
converging said rays of radiation at said second focal point;
positioning a light pipe having an input end and output end so said input end is substantially proximate to said second focal point;
collecting said rays of radiation at said input end;
passing said rays of radiation through said light pipe; and
outputting rays of radiation from said output end of said light pipe. - View Dependent Claims (134, 135, 136, 137, 138, 139)
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Specification