Light source module and projection device employing same

A technology of light source module and monochromatic light source, which is applied to lighting devices, projection devices, components of lighting devices, etc., can solve the problem of difficulty in reducing the size of projectors, and achieve the effect of reducing settings.

Inactive Publication Date: 2012-03-21
BENQ CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous LED light sources for projectors generally include red LED light sources, green LED light sources, and blue LED light sources. At the same time, in order to improve the brightness of th

Method used

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  • Light source module and projection device employing same
  • Light source module and projection device employing same
  • Light source module and projection device employing same

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Embodiment Construction

[0026] Such as Figure 1A In the illustrated embodiment, the light source module 800 of the present invention includes a monochromatic light source 100 , a rotating wheel 300 , a filter wheel 500 and a dichroic mirror 700 . The monochromatic light source 100 emits a first color light 201 . The rotating wheel 300 can rotate relative to the axis 400, such as Figure 1B As shown, the rotating wheel 300 has a light penetration region 310 and a light wavelength conversion region 320, the light wavelength conversion region 320 is coated with a first light wavelength conversion material, and the first light wavelength conversion material can convert the first color light into a second color light . The filter wheel 500 revolves around the same axis 400 and rotates at the same speed as the rotating wheel 300, and has a first color filter area 510 and a second color filter area corresponding to the light transmission area 310 and the light wavelength conversion area 320 respectively ...

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Abstract

The invention relates to a light source module and a projection device employing the same. The light source module comprises a monochromatic light source, a rotation wheel and a filtering wheel, wherein the monochromatic light source is used for sending first color light, the rotation wheel can rotate relatively to an axis and is provided with a light transmitting area and a light wavelength conversion area, the light wavelength conversion area is coated with a first light wavelength conversion material, the first light wavelength conversion material can be used for transforming the first color light into second color light, the filtering wheel rotates with the rotation wheel at the same speed around the axis and is provided a first color light filtering area and a second color light filtering area, the first color light filtering area and the second color light filtering respectively correspond to the light transmitting area and the light wavelength conversion are; when entering the light transmitting area, the first color light passes through the rotation wheel and then passes through the first color light filtering area; and when entering the light wavelength conversion area, the first color light is transformed into the second color light and passes through the second color light filtering area. The light source module is used for providing a projection light source.

Description

【Technical field】 [0001] The present invention relates to a light source module and a projection device using the light source module, in particular to a light source module using a monochromatic light source and a projection device using the light source module. 【Background technique】 [0002] At present, display devices for displaying images on the market can be roughly divided into cathode ray tube (Cathode Ray Tube, hereinafter referred to as CRT) display, plasma display (Plasma Display Panel, PDP), liquid crystal display (Liquid Display Panel, LCD) and so on. Direct view display and projection display. Among them, due to the limitations of large-size panel manufacturing technology and cost considerations, projection displays are often used when viewing large-size screens. [0003] The projector may use a halogen lamp or a semiconductor light emitting diode (Light Emitting Diodes, LED) as a light source. However, the life of the halogen lamp is relatively short, genera...

Claims

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Application Information

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IPC IPC(8): G03B21/20G03B21/00G02B7/00F21V13/00
Inventor 王修辞蒋永裕
Owner BENQ CORP
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