Azimuthally-modulated aperiodic phase arrays for engineered spectral separation
US10378954B2 · kind B2 · utility
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30Claims
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Key dates
| Filing date | Apr 20, 2018 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Apr 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/188
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.