Dual-depth imaging method based on polarization-sensitive grating AR glasses waveguide

Abstract

The invention relates to a dual-depth imaging method based on a polarization-sensitive grating AR glasses waveguide. The first image source emits light, which becomes P light through the polarizing device and enters the first coupling grating. After being refracted by the first coupling grating, the light is totally reflected on the first waveguide substrate, and finally imported into the coupling out grating; the light is transmitted by the coupling After the output grating is exported, it passes through the second half-wave plate to become S light, and then exits through the output grating without any influence, thus forming a deep optical imaging in the human eye; the second image source emits light, which becomes S light through the polarizing device and enters the The second coupling-in grating, the light does not change when passing through the first coupling-in grating, the light is refracted by the second coupling-in grating, totally reflected on the second waveguide substrate, and finally guided into the output grating, and the light is exported by the output grating Optical imaging of another depth is formed in the eye. 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 dual-depth imaging method based on a polarization-sensitive grating AR glasses waveguide. Background technique [0002] AR is a new technology that integrates real world information and virtual world information. It applies visual information, sound, taste, touch, etc. to the real world through computer, sensor and other scientific and technological simulations, and is finally perceived by human senses. To achieve a sensory experience beyond reality. 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 a few companies (such as Magic Leap), the vast majority of 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 easy to switch between the physical depth of clos...

AI Technical Summary

Problems solved by technology

[0003] At present, except for a few companies (such as Magic Leap), the vast majority of 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 easy to switch between the physical depth of close-range real objects and virtual content. Causes disturbances in the visual system including the optic nerve, thus limiting the large-scale application of the product

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