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Projection lens and laser projection equipment

A projection lens and projection technology, applied in optics, optical components, instruments, etc., can solve the problem of high complexity of projection size, and achieve the effect of simplifying projection size and continuous adjustment

Active Publication Date: 2022-04-26
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem of high complexity of adjusting the projection size of the projection lens in the related art can be solved, and the technical solution is as follows:

Method used

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  • Projection lens and laser projection equipment
  • Projection lens and laser projection equipment
  • Projection lens and laser projection equipment

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Experimental program
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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] figure 1 is a schematic diagram of the implementation environment involved in the embodiment of the present invention, and the implementation environment may include a screen 10 and a projection lens 20 .

[0043] The projection lens 20 can transmit an image beam to the screen 10 , and the image beam can form an image on the screen 10 . The current development trend is to reduce the throw ratio of the projection lens 20 (the throw ratio is the ratio of the projection distance s to the screen width h, and the projection distance s is the distance between the projection lens 20 and the screen 10). The smaller the throw ratio, the smaller the projection lens. A larger screen can be projected at a shorter projection distance. A pr...

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Abstract

The invention discloses a projection lens and laser projection equipment, which belong to the field of optical equipment. The projection lens includes: a refractor lens group and a reflector. The refracting mirror group includes a first mirror group, a second mirror group, a third mirror group and a fourth mirror group. The third mirror group includes at least one sub-mirror group, and each sub-mirror group can move along the light-emitting direction or the opposite direction of the light-emitting direction, which can realize the adjustment of the projection size of the projection lens, which effectively simplifies the adjustment of the projection size of the projection lens.

Description

technical field [0001] The invention relates to the field of optical equipment, in particular to a projection lens and laser projection equipment. Background technique [0002] With the improvement of science and technology, projection lenses are more and more widely used in people's work and life, such as education, office, home or entertainment. For example, for projection lenses used in home theaters, the higher the resolution of the projection lens, the user The higher the viewing experience. Therefore, people have higher and higher requirements for projection lenses. [0003] In related technologies, ultra-short-focus laser projection equipment tends to be used in household projection equipment, and the laser projection equipment includes: a light valve and a projection lens. The projection lens includes: a refracting mirror group and a reflecting mirror. Among them, the light valve is used to generate the image beam, and the image beam first enters the refracting mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/20G02B13/00
CPCG03B21/142G03B21/2033G02B13/0045G02B13/006
Inventor 李晓平
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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