Reflexion type light-valve minisize projection apparatus
A micro-projector and reflective technology, which is applied in optics, instruments, optical components, etc., can solve the problem that the utilization rate of light energy needs to be improved, and achieve the effect of improving the utilization rate of light energy, reducing the volume, and reducing the cost of design and processing
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Embodiment 1
[0038] Embodiment one, such as Figure 4 As shown, the lighting source 401 adopts a plurality of single-color LEDs, and the light emitted by the LEDs passes through the light mixing cylinder 4021 of the lighting optical system 402, and performs light mixing processing on each LED to make the light uniform, and then synthesizes the light through the dichromatic mirror 4022 It is a colored or white light beam, and then enters the PBS403 through the polarizer 4023 and the illumination lens 4024. Reflected by the PBS 403 into the first mirror 4041 of the projection objective 404 , the aperture stop 406 is located behind the first mirror 4041 of the projection objective 404 , close to the PBS 403 . Finally, the projection objective lens 404 and the illumination optical system 402 together irradiate the light emitted by the LED onto the reflective light valve 405 substantially uniformly, and each pixel of the reflective light valve 405 respectively modulates the illumination light a...
Embodiment 2
[0039] Embodiment two, such as Figure 5As shown, the lighting source 501 adopts a plurality of single-color LEDs, and the light emitted by the LEDs passes through the light mixing tube 5021 of the lighting optical system 502, and performs light mixing processing on each LED to make the light uniform, and then synthesizes the light through the dichromatic mirror 5022 It is a colored or white light beam, and then enters the PBS503 through the polarizer 5023 and the illumination lens 5024. Reflected by the PBS 503 into the first mirror 5041 of the projection objective 504 , the aperture stop 506 is located in front of the first mirror 5041 of the projection objective 504 , close to the PBS 503 . Finally, the projection objective lens 504 and the illumination optical system 502 together irradiate the light emitted by the LED onto the reflective light valve 505 substantially uniformly, and each pixel of the reflective light valve 505 respectively modulates the illumination light a...
Embodiment 3
[0040] Embodiment three, such as Image 6 As shown, the illumination source 601 adopts a plurality of single-color LEDs, and the light emitted by the LEDs passes through the light mixing cylinder 6021 of the illumination optical system 602, and performs light mixing processing on each LED to make the light uniform, and then synthesizes the light through the dichromatic mirror 6022 It is a colored or white light beam, and then enters the PBS603 through the polarizer 6023 and the illumination lens 6024. The aperture stop 606 is located in front of the PBS 603 after being reflected by the PBS 603 into the first mirror 6041 of the projection objective 604 . Finally, the projection objective lens 604 and the illumination optical system 602 together irradiate the light emitted by the LED onto the reflective light valve 605 substantially uniformly, and each pixel of the reflective light valve 605 respectively modulates the illuminating light and transforms the polarization state of t...
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