A multi-depth imaging method for polarization-sensitive AR glasses waveguide

Abstract

The invention relates to a multi-depth imaging method for polarization-sensitive AR glasses waveguide. The light emitted by the image source becomes linearly polarized light through the polarizing device and enters the corresponding in-coupling grating of the waveguide substrate. The light is refracted by the in-coupling grating, totally reflected on the waveguide substrate, and finally introduced into the out-coupling grating area; no electric field is applied to the liquid crystal layer In the case of control, the linearly polarized light is refracted through the outcoupling grating, and then exported through the liquid crystal layer and the output grating, thereby forming a deep optical image in the human eye; The grating is refracted, and then the polarization rotation occurs through the liquid crystal layer, and then the output grating is refracted to form an optical imaging different from the original linearly polarized light, so as to realize the optical imaging control of two depths. The invention has the advantages of simplicity, convenience, stability, fast response speed and the like.

Description

technical field [0001] The invention relates to the field of augmented reality technology (AR), in particular to a multi-depth imaging method based on polarization-sensitive AR glasses waveguide. Background technique [0002] AR is a technology that combines real and virtual images, videos, and 3D model applications. The goal of this technology is to put the virtual world on the screen and interact with the real world. At present, companies such as Google and Microsoft have launched commercialized AR glasses, leading the development and application of AR technology. [0003] At present, except for Magic Leap, most AR products can only display a single depth of field. As a result, in the scene of fusion of virtual and real, the human eye is constantly switching between the physical depth of the close-up real object and the virtual content, which is very easy to cause damage including the optic nerve. The disorder of the visual system inside limits the large-scale application...

AI Technical Summary

Problems solved by technology

[0003] At present, except for Magic Leap, most AR products can only display a single depth of field. As a result, in the scene of fusion of virtual and real, the human eye is constantly switching between the physical depth of the close-up real object and the virtual content, which is very easy to cause damage including the optic nerve. The disorder of the visual system, which limits the large-scale application of the product

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