Binocular waveguide display method based on reflective polarization multiplexing liquid crystal lens

Abstract

The invention discloses a binocular waveguide display method based on a reflective polarization multiplexing liquid crystal lens. The method is based on a waveguide display device, the waveguide display device comprises an optical waveguide plate, an in-coupling liquid crystal lens, a right-handed out-coupling grating and a left-handed out-coupling grating are arranged at the same side of the optical waveguide plate, and the in-coupling liquid crystal lens is positioned between the right-handed out-coupling grating and the left-handed out-coupling grating. The method comprises the steps that an image source is placed on a focal plane of an in-coupling liquid crystal lens, and the in-coupling liquid crystal lens collimates and couples two kinds of circularly polarized light from the image source into an optical waveguide plate; the left-handed circularly polarized light and the right-handed circularly polarized light are propagated in the waveguide plate in the opposite directions by means of total reflection; and after touching the left-handed-out coupling grating and the right-handed-out coupling grating, the light is diffracted and coupled out of the waveguide. The method solves the problems that in a traditional near-eye waveguide display system, a collimating lens needs to be used, and a gap exists between the collimating lens and the waveguide plate.

Description

technical field [0001] The invention belongs to the technical field of near-eye waveguide display, in particular to a binocular waveguide display method based on a reflective polarization multiplexing liquid crystal lens. Background technique [0002] Augmented reality (AR) technology has been developed to a greater extent in the fields of entertainment, education, medical surgery and engineering. By overlapping the real environment with computer-generated images, AR, as an information platform, is revolutionizing viewers and displays. the interaction between them. [0003] As a widely recognized AR solution, waveguide augmented reality display devices have certain potential and advantages in terms of volume, weight, exit pupil size and visibility. However, in the traditional waveguide display technology, no matter whether free-form surface, holographic grating or liquid crystal grating is used as the coupling device, a collimating lens needs to be used behind the image sou...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a binocular waveguide display method based on a reflective polarization multiplexing liquid crystal lens, which can solve the problem that an additional collimating lens needs to be used in the waveguide display system

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