Optical waveguide structure and head-mounted display device

Abstract

The embodiment of the invention provides an optical waveguide structure and head-mounted display equipment. The optical waveguide structure comprises an optical waveguide body, a volume holographic element and a liquid crystal element, the optical waveguide body comprises a first surface and a second surface which are oppositely arranged, the volume holographic element is arranged on the first surface, and the liquid crystal element is arranged on the second surface; the liquid crystal element is used for selectively diffracting and transmitting light, and first circularly polarized light in a first polarization state in the light is diffracted to the volume holographic element; the volume holographic element is used for enabling the polarization direction of the first circularly polarized light to rotate to form second circularly polarized light in a second polarization state, the second circularly polarized light is diffracted to the liquid crystal element, and the second circularly polarized light is coupled out of the optical waveguide body after being transmitted by the liquid crystal element. The embodiment of the invention provides a large-view-field hybrid virtual reality scheme.

Description

technical field [0001] The embodiments of the present application relate to the technical field of near-eye display imaging, and more particularly, the embodiments of the present application relate to an optical waveguide structure and a head-mounted display device. Background technique [0002] At present, VR virtual reality equipment can easily achieve a large field of view of more than 90°, but VR virtual reality equipment cannot see the outside world through the display screen, that is, it does not have the ability to integrate reality. Although AR augmented reality devices can see the outside world through the display screen and can integrate reality, their field of view is generally small and difficult to exceed 60°. It can be seen that the existing VR technology and AR technology have different degrees of deficiencies in the user's visual experience. SUMMARY OF THE INVENTION [0003] The purpose of this application is to provide an optical waveguide structure and a...

AI Technical Summary

Problems solved by technology

[0002] At present, VR virtual reality equipment can easily achieve a large field of view above 90°, but VR virtual reality equipment cannot see the outside world through the display screen, that is, it has no ability to integrate reality

Although AR augmented reality devices can penetrate the display screen to see the outside world and can integrate reality, their field of view is generally small and difficult to exceed 60°

It can be seen that the existing VR technology and AR technology have different degrees of deficiencies in terms of user visual experience.

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