Stereo projection optical system

Abstract

The invention relates to a perspective projection optical system which comprises a polarized beam splitter, a first digital micro mirror element, a second digital micro mirror element, two total internal reflection prisms and a light recombiner; wherein, the polarized beam splitter is used for splitting an incident light into a first polarized light and a second polarized light; the first and second digital micro mirror elements are respectively arranged on the exit path of the first polarized and second polarized light; the two total internal reflection prisms are respectively arranged between the first digital micro mirror element and the light path of the polarized beam splitter as well as between the second digital micro mirror element and the light path of the polarized beam splitter; and the recombiner is arranged on the light path of the exit light of the first and second digital micro mirror elements and used for combining the incident light which arrives at the light recombiner, so as to form a projection beam. The perspective projection optical system forms two images by the first and second micro mirror elements and projects the two images by passing a projection lens by the first polarized light and the second polarized light respectively, so that a looker can watch perspective image information by wearing two analyzers which are vertical along the analyzing direction on the left and right eyes respectively.

Description

technical field [0001] The present invention relates to a projection optical system, in particular to a stereoscopic projection optical system with a stereoscopic projection display function. Background technique [0002] In recent years, image projectors, especially digital projectors, have become popular as tools for displaying various information to viewers. Typically, these projectors are used to project images generated by a computer onto a screen. To the viewer, the image projected by the image projector usually appears to be a flat two-dimensional image, which cannot display any image depth information other than the image itself. This display can be adapted to display a variety of information. However, in some cases, viewers desire a projector that can display the depth of field or structural features of an image to a greater extent than a two-dimensional display. [0003] One way of enabling images displayed in two dimensions to give the image depth of field is b...

AI Technical Summary

Problems solved by technology

While such systems are successfully used to form stereoscopic images, the cost and weight of the system is much higher than that of a single projector

Also, the optical alignment required for the two projectors is relatively difficult and time consuming

also, due to the weight and bulk of the two systems, it is extremely difficult to move such a system between the two locations, and there are potential image alignment issues

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