Time division multiplexing of multiple wavelengths for high resolution scanning time of flight 3D imaging
US10859704B2 · kind B2 · utility
0Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | Jan 8, 2018 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Feb 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/89
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Laser light pulses of at least two different wavelengths are reflected off a scanning mirror. A first time-of-flight distance measurement circuit receives reflected light pulses of a first wavelength and determines distances. A second time-of-flight distance measurement circuit receives reflected light pulses of a second wavelength and determines distances. The laser light pulses of different wavelengths may be interleaved in time to increase resolution. The laser light pulses of different wavelengths may also be used for detecting safety violations and/or power control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.