Polarization modulation device and method for stereoscopic projection light and stereoscopic image projection system
A polarization modulation, projection light technology, applied in the field of projection display, can solve problems such as large volume, and achieve the effect of reducing the volume and reducing the optical path difference
Pending Publication Date: 2018-08-21
SHENZHEN TIME WAYING TECH +1
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[0007] The main purpose of the embodiments of the present invention is to provide a stereoscopic projection light polarization modulation device, method and stereoscopic image projection system, which can solve the technical problem of large volume of the existing stereoscopic projection polarization modulation device based on dual optical path polarization splitting technology
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[0051] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0052] See image 3 , image 3 It is a structural principle diagram of the polarization modulation device for stereoscopic projection light provided in the first embodiment of the present invention. In the first embodiment of the present invention, the above polarization modulation device for stereoscopic projection light includes: a polariz...
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The invention discloses a polarization modulation device and method for stereoscopic projection optical and a stereoscopic image projection system. The device comprises a polarization beam splitting assembly, a first optical path direction adjusting assembly, a second optical path direction adjusting assembly and a polarization state modulating assembly; the polarization beam splitting assembly can split a projection beam carrying image information into a first transmitted beam, a second transmitted beam, a first reflected beam and a second reflected beam which have four different polarizationstates or three different polarization states. Compared with the prior art, the polarization modulation device and method have the advantages that compared with a double-optical-path polarization beam splitting mode with only one reflected beam, the mode of splitting the beam corresponding to a complete image into two reflected beams during polarization can effectively reduce the optical distancedifference between the reflected beams and the transmitted beams, so that the subsequent optical path direction adjusting assembly and an optical distance compensating assembly can be made smaller, and thus the size of the whole device is greatly reduced.
Description
technical field [0001] The invention belongs to the technical field of projection display, and in particular relates to a polarization modulation device and method for stereoscopic projection light and a stereoscopic image projection system. Background technique [0002] The principle of stereoscopic video viewing is that the left and right eyes of a person respectively receive the video images of the left and right eyes played in frame order, and then synthesize the video images of the left and right eyes through the brain to produce a stereoscopic effect. [0003] The current left and right eye image receiving technologies mainly include the left and right polarization splitting methods, the left and right shutter switch synchronization methods, and the left and right red and blue splitting methods, among which the left and right polarization splitting methods are more widely used. In the left and right polarization splitting methods, single optical path polarization split...
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Login to View More IPC IPC(8): G02B27/26G03B21/28G03B21/14H04N13/337H04N9/31G02B30/25
CPCH04N9/3167G03B21/14G03B21/28G02B30/25
Inventor 邓树端斯蒂芬·约翰·帕尔默周永业
Owner SHENZHEN TIME WAYING TECH