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LED three-color light LCD panel illuminating apparatus

A liquid crystal panel and three-color light technology, applied in projection devices, image reproducers using projection devices, optics, etc., can solve the problems of large relay lens modules, low light energy utilization of light sources, and short life of UHP lamps. , to achieve the effect of compact structure, good lighting uniformity and low cost

Inactive Publication Date: 2009-11-18
SHANGHAI FOREAL OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the background technology are that the light source module and the relay lens module are bulky and complex in structure; the life of the UHP lamp is short; an infrared / ultraviolet filter needs to be added to filter out the infrared / ultraviolet light in the white light, and the light energy utilization rate of the light source is low

Method used

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  • LED three-color light LCD panel illuminating apparatus
  • LED three-color light LCD panel illuminating apparatus
  • LED three-color light LCD panel illuminating apparatus

Examples

Experimental program
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Effect test

Embodiment L

[0022] Embodiment LED three-color light liquid crystal panel illuminating device

[0023] The technical indicators of the components of the light source module used in this embodiment are listed as follows:

[0024] The size of the light-emitting surface of red LED211, green LED221 and blue LED231 is 3.9mm×2.2mm;

[0025] The size of the upper bottom surface and the lower bottom surface of the red light pyramid light pipe 212, the green light pyramid light pipe 222, and the blue light pyramid light pipe 232 are 3.9mm×2.2mm and 15.1mm×8.5mm respectively, and the height is 30mm;

[0026] The dimensions of the first red and blue dichroic prism 213, the second red and blue dichroic prism 233 and the green light turning prism 223 are 15.1mm×8.5mm×8.5mm;

[0027] The size of the red and blue light sharing light guide 201 and the green light guide 202 is 15.1mm×8.5mm×50mm;

[0028] The optical axis of the green light guide 202 is above the optical axis of the red and blue shared li...

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Abstract

An LED three-color light liquid crystal panel lighting device belongs to the technical field of photoelectric lighting and display. The device is composed of a light source module containing conjoined optical elements and a relay lens module and a polarizing prism module of the background technology. The light source module consists of optical elements red LED, green LED, blue LED, red pyramid Light pipe, green light pyramid light pipe, blue light pyramid light pipe, red and blue first beam splitting prism, red and blue second beam splitting prism, green light turning prism, red and blue light sharing light pipe, green light light pipe are combined into a conjoined structure, the light source The optical axis of the module coincides with the optical axis of the relay lens module, and the optical axis of the relay lens module coincides with the optical axis of the polarizing prism module. The device enables the three liquid crystal panels in the polarizing prism mold to be uniformly illuminated by the red LED, the green LED and the blue LED respectively.

Description

technical field [0001] The invention relates to an LED three-color liquid crystal panel lighting device, which belongs to the technical field of photoelectric lighting and display. Background technique [0002] In the background art, there is a liquid crystal panel illuminating device that uses an X prism to split light. The device is composed of three parts: a light source module, a relay lens module and a polarizing prism module. The light source module includes UHP lamp, infrared / ultraviolet filter, light guide rod and X prism. The relay lens module includes red, green, and blue light relay lens groups and polarizers. The polarizing prism module includes red, green, and blue light polarizing prisms and their liquid crystal panels. The optical axis of the light source module coincides with the optical axis of the relay lens module, and the optical axis of the relay lens module coincides with the optical axis of the polarizing prism module. The white light emitted by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G02B27/10G03B21/14H04N9/31
Inventor 辜长明郑耀沈荣桂刘啸虎楼云中
Owner SHANGHAI FOREAL OPTOELECTRONICS
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