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Lighting device and laser projection equipment

A lighting device and light beam technology, which is applied in the laser field, can solve problems such as the complex structure of the lighting device, and achieve the effect of reducing size, volume, and volume

Pending Publication Date: 2021-11-12
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a lighting device and a laser projection device, which can solve the problem that the structure of the lighting device is relatively complicated in the related art

Method used

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  • Lighting device and laser projection equipment
  • Lighting device and laser projection equipment
  • Lighting device and laser projection equipment

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0038] figure 1 It is a schematic diagram of the implementation environment involved in the embodiment of the present application, and the implementation environment may include an ultra-short-throw projector 10 and a projection screen 20 .

[0039] The laser projector 10 may include an illumination device 11 and a projection lens 12 . The lighting device 11 is used to provide a light source to the projection lens 12 , and the projection lens 12 is used to project a preset pattern onto the projection screen 20 according to the light source provided by the lighting device 11 .

[0040] The projection screen 20 is used to carry the pattern projected by the projection lens 12 . The projection screen 20 may be made of various mater...

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Abstract

The invention discloses a lighting device and laser projection equipment, and belongs to the technical field of laser. The lighting device comprises a lens assembly, a reverse total internal reflection prism assembly and a light valve which are sequentially arranged in the light path direction of the lighting device. The lens assembly comprises a first lens and a second lens which are sequentially arranged in the light path direction, after the first lens receives a light beam, the light beam is guided to the second lens, the second lens guides the received light beam to the reverse total internal reflection prism assembly, the light beam is output to the light valve through the reverse total internal reflection prism assembly, and the light valve outputs the received light beam to a camera; the reverse total internal reflection prism assembly comprises a reverse total internal reflection prism and a compensation prism located on the incident surface of the reverse total internal reflection prism, and the compensation prism is used for reducing the spot size of the incident beam. The problem that the size of the lighting device is large in the prior art is solved, and the effect of reducing the size of the lighting device is achieved.

Description

technical field [0001] The present application relates to the field of laser technology, in particular to an illuminating device and laser projection equipment. Background technique [0002] At present, ultra-short-throw projectors can project large-size images in the case of short-distance projection, and are widely used for their advantages of high space utilization and small size. A light valve (English: digital micromirror device, DMD for short) is a digital micromirror device, which generally uses a short side of the light valve to receive incident light to reduce the size of the lighting device. [0003] An illuminating device in the related art includes a uniform light component, a lens assembly, a plane reflector and a compensating prism. Since the light valve and the light uniform component have a certain included angle, the light path can be better received. Therefore, the light uniform component and the light valve A lens assembly, a plane reflector located in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/2033G03B21/206G03B21/208
Inventor 杜玉楠陈陆田勇
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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