Light source module and projection device employing same

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...

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 the image projected by the projector, each single-color light source includes a plurality of LEDs, thus forming three light sources. array, making it difficult to reduce the size of the projector

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