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US 12,001,017 B1Granted
Illumination system for object tracking
AssigneeMeta Platforms Technologies, LLC
InventorsYun-Han Lee, Yu Shi, Lu Lu, Scott Charles McEldowney
Life of this patent
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Abstract
An illumination system includes a light source configured to emit an infrared light. The illumination system also includes a substrate and a plurality of light deflecting elements coupled with the substrate and configured to deflect the infrared light to illuminate an object.
Claims15
An illumination system, comprising:
- a light source configured to emit an infrared light;
- a substrate;
- and
- a plurality of light deflecting elements coupled with the substrate and configured to deflect the infrared light to illuminate an object,
- wherein the substrate is a light guide, and the illumination system further includes an in-coupling element coupled with the light guide,
- wherein the in-coupling element is configured to couple the infrared light emitted by the light source into the light guide to propagate inside the light guide,
- wherein the plurality of light deflecting elements are coupled with the light guide at a plurality of portions of the light guide along a longitudinal direction of the light guide, and are configured to couple the infrared light propagating inside the light guide out of the light guide to illuminate the object, and
- wherein the illumination system further includes a light splitting element coupled with the light guide, and configured to split the infrared light in-coupled by the in-coupling element into a plurality of infrared lights propagating toward the plurality of light deflecting elements.
5 more elements
An object tracking system, comprising:
- an illumination system comprising:
- a light source configured to emit an infrared light;
- a substrate;
- and
- a plurality of light deflecting elements coupled with the substrate and configured to deflect the infrared light to illuminate an object;
- and
- an optical sensor configured to receive the infrared light reflected by the object and generate an image of the object based on the infrared light reflected by the object,
- wherein the substrate is a light guide, and the illumination system further includes an in-coupling element coupled with the light guide,
- wherein the in-coupling element is configured to couple the infrared light emitted by the light source into the light guide to propagate inside the light guide,
- wherein the plurality of light deflecting elements are coupled with the light guide at a plurality of portions of the light guide along a longitudinal direction of the light guide, and are configured to couple the infrared light propagating inside the light guide out of the light guide to illuminate the object, and
- wherein the illumination system further includes a light splitting element coupled with the light guide, and configured to split the infrared light in-coupled by the in-coupling element into a plurality of infrared lights propagating toward the plurality of light deflecting elements.
8 more elements
Dependencies are inferred from the claim text.