Waveguide display with a small form factor, a large field of view, and a large eyebox
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United States of America Patent
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Jan 22, 2019
Grant Date -
Jun 21, 2018
app pub date -
Sep 14, 2017
filing date -
Dec 20, 2016
priority date (Note) -
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Abstract
A waveguide display is used for presenting media to a user. The waveguide display includes light source assembly, an output waveguide, and a controller. The light source assembly includes one or more projectors projecting an image light at least along one dimension. The output waveguide includes a waveguide body with two opposite surfaces. The output waveguide includes a first grating receiving an image light propagating along an input wave vector, a second grating, and a third grating positioned opposite to the second grating and outputting an expanded image light with wave vectors matching the input wave vector. The controller controls the scanning of the one or more source assemblies to form a two-dimensional image.
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