Compact light projection device with nonlocal metasurface space compressor
AssigneeMeta Platforms Technologies, LLC
InventorMantas ZURAUSKAS
Life of this patent
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Abstract
Apparatuses, systems, methods, and systems/methods of manufacturing a compact light projection device with one or more nonlocal metasurface space compressors, suitable for use in an eye/face tracking system of a near-eye device, are described. In one aspect, an eye/face tracking system may have a light source, a nonlocal metasurface space compressor to receive light from the light source, modify said light, and project the modified light, and a beam forming element to receive and project the modified light as the structured light onto the user's eye and/or surrounding facial tissue.
Claims20
An eye/face tracking system in a near-eye device, comprising:
- an eye/face tracking light projection system to project structured light onto a user's eye and/or surrounding facial tissue, comprising:
- a light source;
- a nonlocal metasurface space compressor to receive light from the light source, modify said light, and project the modified light;
- and
- a beam forming element to receive and project the modified light as the structured light onto the user's eye and/or surrounding facial tissue;
- and
- a sensor to capture reflections of the structured light from the user's eye and/or surrounding facial tissue.
An eye/face tracking system in a near-eye device, comprising:
- an eye/face tracking nonlocal metasurface space compressed light projector integrated circuit comprising a light source, a nonlocal metasurface space compressor, and a beam-forming element;
- a controller communicatively connected to the eye/face tracking nonlocal metasurface space compressed light projector integrated circuit, wherein the controller comprises a processor and a non-transitory computer-readable storage medium storing instructions executable by the processor, and wherein the controller, when executing the instructions, controls the eye/face tracking nonlocal metasurface space compressed light projector integrated circuit to:
- project, by the light source, light;
- modify, by the nonlocal metasurface space compressor, the projected light from the light source;
- pass, by the nonlocal metasurface space compressor, the modified light to the beam-forming element;
- and
- project, by the beam-forming element, the modified light as structured light onto a user's eye and/or surrounding facial tissue, wherein the structured light comprises a pattern;
- a sensor to capture images of reflections of the structured light from the user's eye and/or surrounding facial tissue;
- and
- an eye/face tracking controller to process the captured images of reflections of the structured light from the user's eye and/or surrounding facial tissue and to perform eye/face tracking based at least in part on the processing.
A method of manufacturing an eye/face tracking nonlocal metasurface space compressed light projector integrated circuit for a near-eye device, comprising:
- providing a substrate;
- providing layers comprising a vertical cavity surface emitting laser (VCSEL) on the substrate;
- providing one or more layers comprising a nonlocal metasurface space compressor on the VCSEL;
- and
- providing one or more layers comprising a beam-forming element on the nonlocal metasurface space compressor;
- wherein the eye/face tracking nonlocal metasurface space compressed light projector integrated circuit may be disposed on the near-eye device such that structured light is projected upon a user's eye and/or surrounding facial tissue.
Dependencies are inferred from the claim text.