Lidar systems based on tunable optical metasurfaces
US11092675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2020 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Nov 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An example optical transceiver system, such as a solid-state light detection and ranging (lidar) system, includes a tunable, optically reflective metasurface to selectively reflect incident optical radiation as transmit scan lines at transmit steering angles between a first steering angle and a second steering angle. In some embodiments, a feedback element, such as a volume Bragg grating element, may lock a laser to narrow the band of optical radiation. A receiver may include a tunable, optically reflective metasurface for receiver line-scanning or a two-dimensional array of detector elements forming a set of discrete receive scan lines. In embodiments incorporating a two-dimensional array of detector elements, receiver optics may direct optical radiation incident at each of a plurality of discrete receive steering angles to a unique subset of the discrete receive scan lines of detector elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.