Stereo projection system with single projector and dual liquid crystal light valves, projector and driving method

Abstract

The invention belongs to the technical field of stereo projection and provides a stereo projection system with a single projector and dual liquid crystal light valves. Along the direction of light path, the stereo projection system sequentially comprises a projector, a linear polarizer, a first optical self-compensated bend (OCB) mode liquid crystal light valve, a second OCB mode liquid crystal light valve, a polarization state converter, a projector screen, circular polarized glasses and a synchronous circuit. Stereo projection at higher frame rates is achieved by means of the stereo projection system with the single projector and the dual OCB mode liquid crystal light valves, the dynamic compensation driving technology and the dual OCB mode liquid crystal light valves capable of adjusting the polarization state of light at a high speed. Besides, the structure is simple, the cost is low, and by using one projector to match with the dual liquid crystal light valves and a mating driving circuit, audiences can watch stereo projection through wearing pairs of circular polarized glasses.

Description

technical field [0001] The invention belongs to the technical field of stereoscopic projection, and in particular relates to a stereoscopic projection system with double liquid crystal light valves and single projector, a projector and a driving method. One projector is used with two optical self-compensating curved liquid crystal light valves and circularly polarized light. Glasses realize stereoscopic projection. Background technique [0002] In the existing stereoscopic movie technology, the frequency of 144Hz is generally used to play the stereoscopic movie. These 144 frames include 72 frames for the left eye and 72 frames for the right eye. Among the 72 frames corresponding to each eye, only There are 24 pictures, and each picture is played repeatedly 3 times to form a 72-frame picture; when playing a high-speed moving picture at a playback speed of 24 pictures per eye per second, due to the insufficient number of pictures, the picture will often be blurred and blurred....

AI Technical Summary

Problems solved by technology

However, in the existing 3D devices that use liquid crystal light valves to adjust the polarization of light, the response time of the liquid crystal light valves is at the millisecond level. When the frequency increases, the response speed is often not fast enough, which will cause problems such as the decline of the 3D effect.

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