Photodetection system
US11480818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Feb 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1326
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical scan device includes an optical waveguide array, including a plurality of optical waveguides each of which propagates light along a first direction, that emits a light beam, the plurality of optical waveguides being arranged in a second direction that intersects the first direction, a phase shifter array including a plurality of phase shifters connected separately to each of the plurality of optical waveguides, a control circuit that controls a phase shift amount of each of the plurality of phase shifters and/or inputting of light to each of the plurality of phase shifters and thereby controls a direction and shape of the light beam that is emitted from the optical waveguide array, a photodetector that detects the light beam reflected by a physical object, and a signal processing circuit that generates distance distribution data on the basis of output from the photodetector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.