Illuminating apparatus of light emitting diode

A technology for light-emitting diodes and lighting devices, which is applied to lighting devices, lighting device components, projection devices, etc., can solve problems such as affecting the projection quality of the projector 100 and increasing the complexity of the projector 100, thereby reducing the number and improving the stability. degree, the effect of increasing the lifespan

CN101093066AInactive Publication Date: 2007-12-26UNITED MICROELECTRONICS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2007-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention provides a LED illumination device used in projectors, which takes three spectrums of red, green and blue monochromatic irradiance diode arrays to form a diode panel emitting light from three sides as the light source of the projector, then uses a synthesized prism to merge them to a beam generated by the three LED panels and outputs images with a lens component, which not only can solve the problem that a super high voltage Hg lamp used in a traditional projector generates thermo-radiation and harms the machine and other optical elements but also can simplify the complicated optical system.
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Description

[0001] This application is a divisional application with a filing date of October 22, 2003 and an application number of 200310102865.0. (1) Technical field

[0002] The present invention relates to an illuminating device, in particular to an LED illuminating device used in a projector as a light source. (2) Background technology

[0003] With the prevalence of multimedia presentations, the projector has become one of the necessary computer equipment in the office. Quantization, high image quality, low noise and long light source life to meet the convenience and needs of popular use.

[0004] FIG. 1 is a schematic diagram of the structure and optical path of a conventional projector 100 . Its structure is mainly composed of an illumination system, a light separation and synthesis system and an imaging system. The lighting system includes an ultra-high pressure mercury lamp (UHP mercury lamp, Ultra High Pressure mercury lamp) 101, a parabolic reflector (reflector) 103, an ul...

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Embodiment Construction

[0021] The following is a detailed description of the present invention, and the description of the LED lighting device and the projector using the LED lighting device in the following description does not include a complete structure. The prior art used in the present invention is only cited here with emphasis to help explain the present invention. Moreover, the relevant diagrams in the following texts are not drawn according to the actual scale, and their function is only to express the structural features of the present invention.

[0022] The invention provides a light-emitting diode lighting device, which uses red, green and blue monochromatic light-emitting diode arrays to form a three-sided light-emitting diode panel as the light source of the projector, which can prevent other optical elements in the projector from being damaged by heat radiation, and further Reduce the maintenance cost of the projector; in addition, the projector using the light-emitting diode lightin...