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US 10,378,954 B2Granted
Azimuthally-modulated aperiodic phase arrays for engineered spectral separation
AssigneeTrustees of Boston University
InventorsLuca Dal Negro, Ren Wang
Life of this patent
Estimating the term…
Abstract
An electromagnetic radiation sorting device comprises an image sensor having an imaging plane; a substrate layer positioned adjacent to and spaced a distance from the imaging plane of the image sensor such that the imaging plane of the image sensor is in the Fresnel near field; and a functional layer coupled to the substrate layer, the functional layer having a structure that is configured to sort incoming electromagnetic radiation according to frequency by imparting orbital angular momentum and linear momentum on the incoming electromagnetic radiation.
Claims30
An optical mask comprising:
- a substrate layer;
- an opaque layer;
- and
- a functional layer,
- wherein the functional layer in conjunction with the opaque layer is configured to impart orbital angular momentum and linear momentum on incoming electromagnetic radiation.
2 more elements
An optical mask comprising:
- a substrate layer;
- an opaque layer;
- and
- a functional layer,
- wherein the functional layer in conjunction with the opaque layer form a predefined diffraction pattern that imparts orbital angular momentum and linear momentum on incoming electromagnetic radiation.
2 more elements
Dependencies are inferred from the claim text.