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Three-dimensional projection system

A projection system and 3D technology, applied in the field of 3D projection systems, can solve the problems of viewers' dizziness, difficulty, high cost, and difficult realization, etc., and achieve the effects of lowering manufacturing difficulty, convenient adjustment, and simple structure

Inactive Publication Date: 2011-03-16
ZHEJIANG ESTAR DISPLAY TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] With the continuous development of display technology, the existing 3D projection optical system is mainly to increase the refresh rate of the DLP display to above 120HZ and then realize the 3D projection function by time division. The above is obviously difficult and costly, and it is not easy to achieve
Therefore, dual projectors and polarizers are generally used to realize 3D projection function. Obviously, this cost is also very high. Special assembly and adjustment are required during use, and it is easy to cause dizziness to the viewer due to inaccurate adjustment.

Method used

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Embodiment Construction

[0022] The present invention is implemented like this:

[0023] A 3D projection system consists of two LCOS chips, a PBS prism and a 1 / 2 zone plate, plus a light source system and an imaging lens to form a dual LCOS chip 3D projection optical system. The light from the light source enters the PBS prism after being collimated by the collimator, and the light entering the PBS prism is divided into two polarized rays (P light and S light) by the PBS prism. The polarized S light is transmitted through the PBS prism; the P light is reflected by the PBS prism and directly shines on the LCOS chip, and is reflected by the LCOS chip to become polarized S light and then enters the PBS prism, and the S light directly passes through the PBS prism and enters the imaging lens. The projection lens projects the picture of S light; the other transmitted S light passes through a 1 / 2 zone plate to change its polarization direction into P light, which becomes S light after being reflected by the ...

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Abstract

The invention relates to the projection equipment field, in particular to a three-dimensional (3D) projection system using two conventional LCOS display chips (screens). The 3D projection system is a projection optical system which uses two LCOS display chips to realize 3D function. The optical system is a 3D projection optical system with two LCOS display chips which is composed of two LCOS display chips and PBS prisms, a 1 / 2 wave zone plate, a light source system and an imaging lens. The invention has the following beneficial effects: the 3D projection optical system of the invention adopts the same light source and the same imaging lens and utilizes the optical polarity to relaize 3D function; the demand on the refresh rate of the chip is not high, the production difficulty of the chip is reduced, the optical system has simple structure, and the system is easy to assemble and adjust. The system has the following characteristics: 1) the same light source is adopted to form a polarized 3D optical system, the system has simple structure; 2) the demand of 3D function on the refresh rate of the chip is reduced; 3) the utilization efficiency of the light of the light source is increased; and 4) the system is convenient to adjust and has simple structure.

Description

technical field [0001] The invention relates to the field of projection equipment, in particular to a 3D projection system realized by using two conventional LCOS display chips (screens). Background technique [0002] With the continuous development of display technology, the existing 3D projection optical system is mainly to increase the refresh rate of the DLP display to above 120HZ and then realize the 3D projection function through time division. The above is obviously difficult and costly, and it is not easy to realize. Therefore, dual projectors and polarizers are generally used to realize 3D projection function. Obviously, this is also very expensive. It requires special assembly and adjustment during use, and it is easy to cause dizziness to the viewer due to inaccurate adjustment. [0003] Based on the deficiencies of the existing 3D projection, the inventors have developed "a 3D projection system" of the present invention in order to solve the above problems. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/26G02B27/18G03B35/22G02B30/25
Inventor 刘美鸿
Owner ZHEJIANG ESTAR DISPLAY TECH
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