A light source beam combining module, projection display device and projection display equipment
A technology of projection display and light source, applied in the field of projection display, can solve the problems of complex structure, large number of beam combining devices, and difficulty in realizing miniaturization of light source, etc., and achieves the effect of improving space utilization rate and facilitating miniaturization
Active Publication Date: 2022-03-08
CHENGDU IDEALSEE TECH
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Problems solved by technology
[0008] The object of the present invention is to provide a light source beam combining module, projection display device and projection display equipment, which are used to solve the problem that the light source existing in the prior art is difficult to realize the light source due to the large number of lasers and the number of beam combining devices and the complex structure. Technical issues with miniaturization
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0046]In the embodiment of the present invention, the light source beam combining module includes N groups of light sources; polarization beam combining elements arranged on the outgoing optical paths of the N groups of light sources; N wavelength combining elements arranged on the outgoing optical paths of the polarization beam combining elements Element; each group of light sources includes two light-emitting units of the same color channel, and the two light-emit...
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The invention discloses a light source beam combining module, a projection display device and a projection display device. The light source beam combining module includes N groups of light sources; polarization beam combining elements arranged on the outgoing light paths of the N groups of light sources; N wavelength beam combining elements on the outgoing optical path of the polarization beam combining element; each group of light sources includes two light emitting units of the same color channel, and the two light emitting units are configured to emit light of different polarization states; the polarization The beam combining element is used to combine the light emitted by the two light emitting units of each group of light sources; the N wavelength beam combining elements are used to combine the N beams of light emitted by the polarization beam combining element into one beam of light output; the N is an integer greater than or equal to 3. The above solution can improve the space utilization rate of the light source beam combining module by rationally setting the spatial position of each component, and is conducive to the miniaturization of the light source beam combining module.
Description
technical field [0001] The invention relates to the field of projection display, in particular to a light source beam combining module, a projection display device and projection display equipment. Background technique [0002] The imaging principle of scanning projection technology is to modulate the light corresponding to each pixel of the image to be displayed through the light source, and then drive the scanning fiber through the scanner or scan through MEMS (English full name: Microelectro Mechanical Systems, Chinese name: Micro Electro Mechanical System) The movement of the mirror scans and outputs the light corresponding to each pixel, so that the light corresponding to each pixel of the image to be displayed is projected onto the projection screen one by one to form a projection screen. [0003] Due to the resolution requirements of the scanned image, the light spot size of the light source should be as small as possible, and for the fiber scanning system, if the lig...
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IPC IPC(8): G03B21/00G03B21/20
CPCG03B21/2073G03B21/2066G03B21/2013G03B21/008
Inventor 宋海涛其他发明人请求不公开姓名
Owner CHENGDU IDEALSEE TECH