Three-optical-path polarizing light-splitting stereoscopic video conversion system

Abstract

The present invention relates to a three-light path polarized light-splitting stereographic video switching system. The system comprises: a polarized light-splitting device comprising a first polarized light-splitting layer and a second polarized light-splitting layer which are crossed, wherein the first polarized light-splitting layer is used for guiding a received natural light video image to a first side path and a main path, and the second polarized light-splitting layer is used for guiding the received natural light video image to a second side path and the main path; two reflection devices; a compensation mirror arranged on the main path; a half wave plate arranged on the main path or the side path; and a synchronization controller and three identical liquid crystal optical rotation devices electrically connected thereto, wherein the synchronization controller is used for synchronously driving the three liquid crystal optical rotation devices according to a left-right eye synchronization signal to change the polarization state of incident linearly polarized light so as to alternately generate left-handed circular polarized light and right-handed circular polarized light. By means of the the above arrangement, the three-light path polarized light-splitting stereographic video switching system of the present invention can obtain a relatively high light effect, images are easily aligned, and the imaging quality is high.

Description

technical field [0001] The invention relates to the technical field of stereoscopic display, in particular to a three-light path polarization splitting stereoscopic video conversion system. Background technique [0002] A three-dimensional movie projection system needs to send two video images with parallax to the left and right eyes of the viewer respectively, and then synthesize them through the human brain to produce a three-dimensional effect. Existing technologies mainly include left and right polarization splitting, left and right shutter switch synchronization, and left and right red and blue splitting. [0003] Among them, the left and right polarization splitting method is the most commonly used stereo conversion method in cinemas. At present, there are mainly single optical path polarization splitting ( figure 1 shown) and two-path polarization splitting ( figure 2 shown). figure 1 It is a structural schematic diagram of a single optical path polarization split...

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Problems solved by technology

[0009] The present invention mainly aims to solve the technical problems of low optical efficiency of the existing single optical path polarization splitting stereoscopic video conversion system and difficult image alignment of the dual optical path polarization splitting stereoscopic video conversion system, and provides a high optical efficiency, easy alignment, and high imaging quality three-dimensional video conversion system. Optical path polarization splitting stereoscopic video conversion system

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