Planar waveguide imaging device and method

Abstract

The invention discloses a planar waveguide imaging device and method. The device comprises a lighting source, an optical grating film, an image source, an optical alignment system, an optical wave coupling input surface, a planar waveguide substrate and optical wave coupling output surfaces, wherein the lighting source is used for emitting optical waves distributed in the exponential order, the optical grating film is used for reflecting the optical waves emitted by the lighting source, the image source is used for modulating the optical waves reflected by the optical grating film, the modulated optical waves can be transmitted through the optical grating film, the optical alignment system is used for alignment of the optical waves transmitted by the optical grating film, the optical wave coupling input surface is used for coupling the aligned optical waves into a planar waveguide, the planar waveguide substrate is used for conducting reflection propagation on the input coupled optical waves to form total reflection optical waves, and the optical wave coupling output surfaces are used for expanding the view field and outputting the coupled optical waves out of the planar waveguide substrate. The device and method can improve the luminance uniformity of output images of a wearable waveguide, and designing and machining difficulty is reduced.

Description

technical field [0001] The present invention relates to an imaging device and method, in particular to a planar waveguide imaging device and method. Background technique [0002] At present, in the field of planar waveguide imaging, multiple parallel reflective surfaces are used to reflect and output a large field of view image from bright to dark, and the brightness of the image is uneven, which makes the human eye uncomfortable. Patent No. US7576916B2 describes the use of multiple reflective surfaces with different reflectivity at different incident angles to solve the problem of image inhomogeneity. A lot of money invested. Contents of the invention [0003] In order to solve the technical problem of flat waveguide imaging brightness uniformity, the present invention provides a planar waveguide imaging device and method. [0004] In order to achieve the above object, the first aspect of the present invention provides a planar waveguide imaging device, including: ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of uniformity of brightness in planar waveguide imaging, the present invention provides a planar waveguide imaging device and method

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