SYSTEMS, DEVICES, AND METHODS FOR WAVEGUIDE-BASED EYEBOX EXPANSION IN WEARABLE HEADS-UP DISPLAYS
First Claim
1. An optical waveguide comprising:
- a volume of optically transparent material;
a first input coupler carried by the volume of optically transparent material and positioned and oriented to couple light from a light source into the volume of optically transparent material;
a first output coupler carried by the volume of optically transparent material, the first output coupler positioned and oriented to couple a first portion of light from the light source out of the volume of optically transparent material and direct the first portion of light to a first exit pupil; and
a second output coupler carried by the volume of optically transparent material and spatially-separated from the first output coupler, the second output coupler positioned and oriented to couple a second portion of light from the light source out of the volume of optically transparent material and direct the second portion of light to a second exit pupil, the second exit pupil spatially-separated from the first exit pupil.
1 Assignment
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Accused Products
Abstract
Systems, devices, and methods for eyebox expansion in wearable heads-up displays (“WHUDs”) are described. The WHUDs described herein each include a projector and an optical waveguide positioned in an optical path between the projector and an eye of the user. For any given light signal from the projector, the optical waveguide receives the light signal at an input coupler and outputs multiple instances or copies of the light signal from multiple discrete, spatially-separated output couplers. The multiple instances or copies of the light signal may be converged by the optical waveguide directly to respective exit pupils at the user'"'"'s eye or may be routed by the optical waveguide to a holographic combiner in the user'"'"'s field of view from which the light signals may be converged to respective exit pupils at the user'"'"'s eye. The optical waveguide employs exit pupil replication to expand the eyebox of the WHUD.
44 Citations
13 Claims
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1. An optical waveguide comprising:
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a volume of optically transparent material; a first input coupler carried by the volume of optically transparent material and positioned and oriented to couple light from a light source into the volume of optically transparent material; a first output coupler carried by the volume of optically transparent material, the first output coupler positioned and oriented to couple a first portion of light from the light source out of the volume of optically transparent material and direct the first portion of light to a first exit pupil; and a second output coupler carried by the volume of optically transparent material and spatially-separated from the first output coupler, the second output coupler positioned and oriented to couple a second portion of light from the light source out of the volume of optically transparent material and direct the second portion of light to a second exit pupil, the second exit pupil spatially-separated from the first exit pupil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification