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US 12,111,615 B2Granted
Holographic and diffractive optical encoding systems
AssigneeLight Field Lab, Inc.
InventorsJonathan Sean Karafin, Brendan Elwood Bevensee
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Abstract
Holographic and diffractive optical encoding techniques for forming reflection or transmission holograms. The encoding device includes a substrate having an interference pattern that can propagate light along a light propagation path from one side of the substrate to another side of the substrate. Furthermore, an optical element may be used to propagate light according to a four-dimensional light field coordinate system.
Claims16
A waveguide comprising,
- a substrate;
- and
- an interference pattern encoded in the substrate, the interference pattern defining an array of substrate sites in the substrate;
- wherein the interference pattern is configured to propagate light along light propagation paths extending from light locations on a first side of the substrate toward a second side of the substrate;
- wherein the light propagation paths comprise sets of light propagation paths that extend through a same substrate site and a same light location, wherein each set of light propagation paths are configured to extend in substantially a unique direction on the second side of the substrate and converge from the same substrate site to the same light location on the first side of the substrate, the unique direction being determined by an angular direction of a chief ray propagation path in each set of light propagation paths;
- whereby, the array of substrate sites is configured to propagate light according to a four-dimensional light field coordinate system comprising spatial coordinates defined by positions of the substrate sites and angular coordinates defined by the unique directions of the sets of light propagation paths for each substrate site.
3 more elements
Dependencies are inferred from the claim text.