Optical projection screen and projection system

An optical projection and screen technology, applied in the field of optical projection, can solve the problems of too bright in the middle of the optical projection screen, uneven brightness, etc., and achieve the effect of true color, uniform brightness, and high brightness uniformity

Active Publication Date: 2021-02-12
CHENGDU FSCREEN SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the optical projection screen technology can converge the projection light around the optical projection screen to the viewer, so that the overall brightness of the optical projection screen becomes uniform, and solves the uneven brightness of the existing optical projection screen that is too bright in the middle and too dark at the edge The problem

Method used

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  • Optical projection screen and projection system
  • Optical projection screen and projection system
  • Optical projection screen and projection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] like image 3 a to 3c are structural schematic diagrams of the optical projection screen 10, wherein image 3 a is a rear oblique view of the optical projection screen 10, image 3 b is a side view of the optical projection screen 10, image 3 c is a top view of the optical projection screen 10 . An optical projection screen 10, comprising a surface layer 20, an imaging layer 30, and a reflective layer 40 arranged in sequence from the viewer's direction, the reflective layer 40 comprising an optical microstructure layer, and the optical microstructure layer is arranged in sequence along the vertical direction of the optical projection screen Several optical microstructure blocks 401 are formed in an array in the horizontal direction of the optical projection screen; each optical microstructure block 401 includes two main reflection surfaces, which are respectively a first main reflection surface 4011 and a second main reflection surface 4012, and the first main reflec...

Embodiment 2

[0071] On the basis of Embodiment 1, it is defined that the optical microstructure block 401 includes three reflective surfaces. like Figure 19 a to 19c are structural schematic diagrams of the optical projection screen 10, wherein Figure 19 a is a rear oblique view of the optical projection screen 10, Figure 19 b is a side view of the optical projection screen 10, Figure 19 c is a top view of the optical projection screen 10 . An optical projection screen 10, comprising a surface layer 20, an imaging layer 30, and a reflective layer 40 arranged in sequence from the viewer's direction, the reflective layer 40 comprising an optical microstructure layer, and the optical microstructure layer is arranged in sequence along the vertical direction of the optical projection screen Several optical microstructure blocks 401 are formed in an array in the horizontal direction of the optical projection screen; each optical microstructure block 401 includes three reflective surfaces,...

Embodiment 3

[0074] like Figure 21 a to 21c are structural schematic diagrams of the optical projection screen 10, wherein Figure 21 a is a rear oblique view of the optical projection screen 10, Figure 21 b is a side view of the optical projection screen 10, Figure 21 c is a top view of the optical projection screen 10 . An optical projection screen 10 includes a surface layer 20, an imaging layer 30, and a reflective layer 40 arranged in sequence along the viewer's direction. The reflective layer includes an optical microstructure layer. The microstructure block 401 is formed in an array in the vertical direction of the optical projection screen. The optical microstructure block 401 includes two main reflection surfaces, which are respectively the first main reflection surface 4011 and the second main reflection surface 4012, and the first main reflection surface 4011 and the second main reflection surface. The intersection line 4014 of the two main reflecting surfaces 4012 in spac...

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Abstract

An optical projection screen, comprising a surface layer, an imaging layer, and a reflective layer sequentially arranged along the viewer's direction, the reflective layer including an optical microstructure layer, and the optical microstructure layer consists of several optical microstructure blocks along the optical projection The screen is formed in a vertical or horizontal array, and each of the optical microstructure blocks includes two main reflective surfaces, and the intersecting line of the main reflective surfaces in space has an included angle with the screen plane of the optical projection screen; by the above The optical projection screen and the projector form a projection system. The present invention adjusts the reflection of projection light toward the viewer by controlling the angle between the optical microstructure block and the screen plane, which can significantly reduce the loss of projection light emitted by the projector from the optical projection screen, improve the utilization rate of light energy, and make the optical projection screen And the projection system has extremely high brightness gain and brightness uniformity, which solves the problem of poor brightness gain and uniformity of the existing projection system.

Description

technical field [0001] The invention belongs to the technical field of optical projection, and relates to an optical projection screen and a projection system, in particular to an optical projection screen and a projection system with high brightness gain and high brightness uniformity. Background technique [0002] In recent years, with the development of projection display technology, projection TVs with projectors and optical projection screens have been favored by more and more consumers due to their excellent performance such as wide color gamut, true colors, and healthy eye protection. Generally speaking, the projector in a projection TV has a decisive impact on the performance of the entire projection TV system such as color gamut, color, and brightness. The problem of heavy weight has become a pain point that consumers generally pay attention to. Therefore, it has become the common goal of all major manufacturers to make the projection size small, easy to install, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/56G03B21/60
CPCG03B21/56G03B21/60
Inventor 张益民胡世加陈智超
Owner CHENGDU FSCREEN SCI TECH
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