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US 12,641,900 B2Granted
Aperture-metasurface and hybrid refractive-metasurface imaging systems
AssigneeMetalenz, Inc.
InventorsRobert C. Devlin, John Graff
Life of this patent
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Abstract
Hybrid imaging systems incorporating conventional optical elements and metasurface elements with light sources and/or detectors, and methods of the manufacture and operation of such optical arrangements are provided. Systems and methods describe the integration of apertures with metasurface elements and refractive optics with metasurface elements in illumination sources and sensors.
Claims13
An imaging system comprising:
- at least one image sensor;
- a substrate layer disposed on the at least one image sensor, the substrate layer having a substrate thickness and configured to be transparent to a light with a target wavelength, the substrate layer having a first surface distal the at least one image sensor and a second surface proximal the at least one image sensor;
- an aperture disposed above the first surface of the substrate layer with a first distance and having an aperture opening disposed therein;
- and
- a single layer of a plurality of identical or unique nanostructured elements comprising a metasurface disposed on the first surface, such that light impinging on the aperture opening passes through at least a portion of the metasurface such that a specified angular deflection is imposed thereby;
- wherein the aperture and the metasurface are configured to gather light of a specified operational bandwidth across a specified field of view and shift the light with the target wavelength such that it comes to a focus on the at least one image sensor at a zero or near-zero degree chief ray angle;
- and
- wherein the at least one image sensor and the metasurface have rectangular geometries.
5 more elements
Dependencies are inferred from the claim text.