Double-depth imaging method based on polarized light sensitive grating AR glasses waveguide

Abstract

The invention relates to a double-depth imaging method based on polarized light sensitive grating AR glasses waveguide. A first image source emits light, and the light is changed into P light througha polarization device to enter a first coupling grating; after being refracted by the first coupling grating, the light is totally reflected on a first waveguide substrate, and finally the light is introduced into the coupling grating; the light is led out by the coupling grating and then is changed into S light through a second half-wave plate, and the light is emitted through the output gratingwithout influence, so that optical imaging of one depth is formed in a human eye; a second image source emits light, and the light is changed into S light through the polarization device and enters asecond coupling grating; the light does not change when passing through the first coupling grating, and the light is refracted by the second coupling grating and is totally reflected on a second waveguide substrate, and finally the light is guided into the output grating, and the light is guided out by the output grating and then forms optical image of another depth in the human eye. The method has the advantages of simplicity, convenience, stability, high 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...

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