Optical system for a digital light projection system including a 3-channel LED array light engine
A technology of LED array and optical system, applied in the field of optical system, can solve the problems of complex and expensive, complicated and excessive design height of optical system process and technology
Inactive Publication Date: 2009-06-03
SCRAM TECH
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Problems solved by technology
However, these conventional optical systems and corresponding light sources have disadvantages such as non-uniform light, non-white light and insufficient brightness, for example
In addition, these traditional optical systems generate excessive heat and are highly complex in design, resulting in complex and expensive processes and techniques for manufacturing the optical systems
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[0020] It should be understood that the drawings and description of the present invention have been simplified to illustrate elements that are relevant to a clear understanding of the present invention, while other elements of a typical digital light projection system have been removed for clarity purposes. Those skilled in the art will recognize that other elements may be desirable and / or necessary in order to practice the invention. However, since these elements are well known in the art, and since they do not contribute to a better understanding of the present invention, no description is given herein regarding these elements. It should also be understood that the drawings included herein are merely diagrammatic representations of presently preferred structures for the invention and that structures falling within the scope of the invention may include structures other than those shown in these figures. Reference will now be made to the drawings, wherein like structures are ...
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The present invention provides an optical system for a digital light projection system. The optical system comprises a plurality of LED arrays, wherein each LED array comprises a plurality of LEDs. The optical system also comprises an optical concentrator element positioned substantially adjacent to each of the LED arrays, wherein each concentrator element totally internally reflects light emitted from the plurality of LEDs within the corresponding LED array so as to provide substantially uniform light at an output surface of each concentrator element. The optical system preferably further comprises an optical combiner element, wherein the output surface of each concentrator element is positioned substantially adjacent to a corresponding side of the combiner element, and wherein the combiner element spatially combines the substantially uniform light provided at the output surface of each concentrator element so as to form substantially white light at an output surface of the combiner element. In one embodiment, the plurality of LED arrays consists of 3 LED arrays, wherein the 3 LED arrays consist of 3 single-color LED arrays, and wherein each of the 3 single-color LED arrays is of a different color from one another.
Description
technical field [0001] The present invention relates generally to the field of digital light projection systems, and more particularly to an optical system for a digital light projection system including a 3-channel LED array light engine. Background technique [0002] For digital light projection (DLP) systems, there is a need for an optical system capable of producing substantially uniform and substantially white light along an illumination path. Conventional optical systems for DLP systems include, for example, light sources such as high intensity mercury or xenon lamps. However, these conventional optical systems and corresponding light sources have disadvantages such as non-uniform light, non-white light and insufficient brightness, for example. Furthermore, these conventional optical systems generate excessive heat and are highly complex in design, resulting in complex and expensive processes and techniques for manufacturing the optical systems. [0003] Therefore, i...
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IPC IPC(8): G03B21/00
CPCG03B21/00G03B21/008
Inventor J·F·尚利
Owner SCRAM TECH