Projection system used for presenting stereoscopic image and method thereof

Abstract

The invention relates to a projection system used for presenting a stereoscopic image and a method thereof. The projection system comprises a lens, an image generator, an optical control unit, a polarization unit and a driving device, wherein the lens is used for projecting an image on a display screen; the image generator is used for alternately outputting a first group of image beams in a first time sequence and a second group of image beams in a second time sequence, and the first group of image beams and the second group of image beams have different visual angles; the optical control unit is used for reflecting the first group of image beams or the second group of image beams which are transmitted by the image generator to the lens; the polarization unit is used for outputting the first group of image beams and the second group of image beams in a polarization way when being rotated to a first angle and a second angle respectively, and the first angle and the second angle have an angle difference of 90 DEG; and the driving device is used for driving the polarization unit to be rotated to the first angle or the second angle. The projection system has the advantage of high imaging quality and equipment cost and space saving.

Description

technical field [0001] The present invention relates to a projection system for presenting stereoscopic images and related methods, in particular to a projection system and related methods for presenting stereoscopic images by carrying out polarization processing on the image light with respect to the perspective of the left eye and the perspective of the right eye respectively. method. Background technique [0002] Generally speaking, the working principle of the stereoscopic image is to transmit the image seen by the left eye and the image seen by the right eye to the left eye and the right eye respectively. The received images are superimposed in the mind of the user to form a three-dimensional image with depth of field and layers. The common practice is to use different projection devices, one for projecting images from the left-eye perspective, and the other projecting images from the right-eye perspective. If one is α degree and the other is α+90 degree), the two ima...

AI Technical Summary

Problems solved by technology

[0003] However, the use of different projection devices to project different angles of polarized light relative to the left-eye view image and the right-eye view image has the following disadvantages: the use of two projectors is bulky and takes up space; the hardware cost is increased; the integration of the two projectors requires precision Otherwise, the images projected to the display screen cannot be perfectly overlapped, resulting in image misalignment or unequal focal length; and the luminous flux of the polarized light will be reduced, making the viewer feel that the image brightness is not enough to match the brightness of the outside world Adequate ambient viewing, etc.

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