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Off-axis short-focus optical projection screen and projection system

An optical projection and screen technology, applied in the field of optical projection, can solve the problems of low brightness, poor color reproduction, and low contrast, and achieve the effects of high gain, high color reproduction, and high contrast.

Inactive Publication Date: 2019-03-08
CHENGDU FSCREEN SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of low brightness, low contrast and poor color reproduction of existing line grating screens, and provide an off-axis short-focus optical projection with high gain, high contrast, no surface glare and high color reproduction. screen, and a projection system comprising the optical screen is provided

Method used

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  • Off-axis short-focus optical projection screen and projection system
  • Off-axis short-focus optical projection screen and projection system
  • Off-axis short-focus optical projection screen and projection system

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Embodiment Construction

[0019] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as image 3 As shown, an off-axis short-focus optical projection screen includes a micro-optical structure layer 1, a base support layer 2 and a flat plate layer 3 in sequence, and the micro-optical structure layer 1 is arranged on the side of the base support layer 1 facing the projector, The fine optical structure layer 1 includes a plurality of zigzag optical structures, and each optical structure includes an imaging layer 12 and a black light absorbing layer 11 .

[0021] Further, each of the optical structures is made of white reflective material, and the cross-section of the optical structure is a quadrilateral structure; in the quadrilateral structure, a black light-absorbing layer 11 is respectively arranged on the two sides adjacent to the base support layer; The plane where the opposite side of the support layer is locat...

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Abstract

The invention discloses an off-axis short-focus optical projection screen and a projection system. The projection screen comprises a fine optical structure layer (1), a substrate supporting layer (2)and a flat panel layer (3) in sequence, the fine optical structure layer (1) is arranged on one side of the substrate supporting layer (2) facing to a projector, the fine optical structure layer (1) comprises a plurality of zigzag optical structures, and each optical structure comprises an imaging layer (12) and a black light absorption layer (11). The projection system comprises the optical projection screen and an off-axis short-focus projector located obliquely in front of the optical projection screen. The optical screen disclosed by the invention has a high gain and a high contrast in a bright environment, and also has the advantages of no surface glare and high color reproduction.

Description

technical field [0001] The invention belongs to the technical field of optical projection, in particular to an off-axis short-focus optical projection screen and a projection system. Background technique [0002] In recent years, with the improvement of the brightness of the projector itself, most projection screens need to be used in natural light or very bright environments. Due to the problem of technical principles, when using ordinary glass bead screens, white plastic screens, gray screens, etc. to project images, the stronger the ambient light is, the brighter the black pattern on the projected image will be, and the contrast of the projected image will drop seriously. The ambient light is superimposed and faded, resulting in unsatisfactory color reproduction. [0003] Therefore, when using a projection screen in a bright environment, especially a front projection screen, it is particularly important to solve the color reproduction performance of the projected image, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/60
CPCG03B21/60
Inventor 张益民吴庆富
Owner CHENGDU FSCREEN SCI TECH