Stereoprojection device of single projector with single liquid crystal light valve
A technology of liquid crystal light valve and stereoscopic projection, which is applied in projection devices, stereoscopic systems, optics, etc., can solve the problem of high cost, and achieve the effects of low cost, simple structure, and simple circuit
Active Publication Date: 2013-05-08
SHENZHEN TIME WAYING TECH
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This method requires precise alignment of two projectors to ensure the accuracy of the projection position, and the use of two projectors at the same time is costly
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[0023] The present invention is described in detail as follows with reference to the accompanying drawings
[0024] as the picture shows, figure 1 : Schematic diagram of a single-projector stereoscopic projection device of the present invention. figure 2 : In mode 1, the light transmission axis of the linear polarizer 2 forms an angle of 45 degrees with the projection direction of the liquid crystal molecules in the liquid crystal light valve 4 . The direction of the transmission axis of the linear polarizer 2 is 7, and the projection direction of the liquid crystal molecules is 8. image 3 In mode 2, the light transmission axis of the linear polarizer 2 and the projection direction of the liquid crystal molecules in the liquid crystal light valve 4 form a negative 45-degree angle. The direction of the transmission axis of the linear polarizer 2 is 9, and the projection direction of the liquid crystal molecules is 8. Figure 4 : Schematic diagram of conversion of each opti...
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Abstract
The invention relates to a stereoprojection device of a single projector with a single liquid crystal light valve. The stereoprojection device comprises a projector, a synchronous circuit, a self-compensation bending mode liquid crystal light valve, a movie screen and rotary polaroid glasses. A linear polarizer is positioned before a lens of a projector; the self-compensation bending mode liquid crystal light valve is positioned outside the linear polarizer; one side of the lens of the projector is the inside; video input signals comprise left and right eye image signals which are alternatively transmitted to the projector in sequence; light emitted by the projector passes through the linear polarizer and the self-compensation bending mode liquid crystal light valve in sequence and is projected to the movie screen; and audience can watch the movie screen by wearing the rotary polaroid glasses. The invention has the advantages of simple structure, simple circuit and low cost and is free from considering the counterpoint problem of stereoscopic images of two projectors. The stereoprojection effect can be realized by only using one projector; and the cost of the stereoprojection device is lower than that of a tereoprojection system of double projectors.
Description
technical field [0001] The invention relates to a stereoscopic projection device, in particular to a stereoscopic projection device with a single liquid crystal light valve and a single projector, which utilizes a projector with a liquid crystal light valve and polarized glasses to realize a stereoscopic projection effect. Background technique [0002] The existing stereoscopic projection technology generally utilizes two projectors, and a fixed left-handed circular polarizer and a right-handed circular polarizer are respectively installed in front of the two lenses to convert the light into left-handed circularly polarized light and right-handed circularly polarized light. Projected on a screen, the audience can watch stereoscopic images after wearing circular polarizer glasses. This method requires precise alignment of two projectors to ensure the accuracy of the projection position, and the use of two projectors at the same time is costly. Contents of the invention [...
Claims
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IPC IPC(8): H04N5/74H04N13/04G02B27/26G02F1/13G03B21/00G02B30/25
Inventor 李艳龙孙玉宝
Owner SHENZHEN TIME WAYING TECH