Projection device, light source module thereof, wavelength conversion wheel and filter wheel synchronization method thereof
A technology of wavelength conversion wheel and projection device, which is applied in projection devices, optics, photography, etc., and can solve the problems that projection devices cannot display images normally
Inactive Publication Date: 2020-04-03
CORETRONIC
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Problems solved by technology
Generally speaking, the wavelength conversion wheel and the filter wheel are synchronously controlled by the image processor. However, if the image processor does not have the function of simultaneously controlling the synchronization of the wavelength conversion wheel and the filter wheel with the digital micromirror element, the Make the projection device unable to display the video screen normally
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[0017] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
[0018] figure 1 is a schematic diagram of a projection device according to an embodiment of the present invention, please refer to figure 1 . The projection device 100 includes a light source module 102 , an imaging element 118 and a projection lens 120 . The light source module 102 is used to provide the illumination light beam L3 to the imaging element 118 . The imaging element 118 can be, for example, a reflective light modulator such as a Liquid Crystal On Silicon panel (LCoS pane...
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The invention discloses a projection device, a light source module thereof, a wavelength conversion wheel and a filter wheel synchronization method thereof. The rotation states of the wavelength conversion wheel and the filter wheel are detected to generate a first position signal and a second position signal respectively. A control unit is used for controlling one of the wavelength conversion wheel and the filter wheel to rotate. A micro-control unit is used for controlling the other one of the wavelength conversion wheel and the filter wheel to rotate according to the first position signal and the second position signal, so that the wavelength conversion wheel and the filter wheel rotate synchronously. According to the projection device and the synchronization method of the light sourcemodule, the wavelength conversion wheel and the filter wheel of the projection device, the wavelength conversion wheel and the filter wheel can still be synchronized under the condition that the control unit only supports and controls one wavelength conversion wheel or one filter wheel, so that the projection device can normally display an image picture.
Description
technical field [0001] The present invention relates to a display device, and in particular to a projection device and a method for synchronizing a light source module, a wavelength conversion wheel, and a filter wheel. Background technique [0002] A projector is a display device used to produce large-scale images. The imaging principle of the projector is to convert the illumination beam generated by the light source module into an image beam through a light valve, and then project the image beam onto a screen or a wall through a lens to form an image. With the advancement of projection technology and the reduction of manufacturing costs, the use of projectors has gradually expanded from commercial use to home use. [0003] In the structure of the laser projector, it mainly produces the desired color beam by making the blue laser beam sequentially pass through the wavelength conversion wheel and the filter wheel. The architecture of such a projection device needs to sync...
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IPC IPC(8): G03B21/20G02B26/00
CPCG02B26/007G03B21/204G03B21/206G02B26/008G03B33/08H04N9/3114H04N9/3158H04N9/3126
Inventor 吕东宜陈顺泰洪振益张文星
Owner CORETRONIC