LIGHT SOURCE MODULE AND PROJECTION APPARATUS USING THE SAME
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United States of America Patent
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app pub date -
Dec 3, 2015
filing date -
Dec 3, 2015
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Abstract
A light source module including a light source and a light diffusion and filtering plate is provided. The light source is configured to provide an illumination light beam. The light diffusion and filtering plate is disposed on a transmission path of the illumination light beam. The light diffusion and filtering plate includes a light-transparent substrate, a light diffusion structure, and a light filtering structure. The light-transparent substrate has a first surface facing to the light source and a second surface opposite to the first surface. The light diffusion structure is disposed on the first surface, and the light filtering structure is disposed on the second surface. The light source module may reduce flicker. Further, a projection apparatus having the light source module is also provided.
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