Electrical mixer as reference path for time-of-flight measurement
US10591588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2018 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Apr 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/89
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An imaging system may include a modulation component to provide a modulation signal. The imaging system may include an illumination component to receive the modulation signal and emit a modulated optical signal based on the modulation signal, and provide an electrical illumination signal. The electrical illumination signal may be an electrical representation of the modulated optical signal emitted by the illumination component. The imaging system may include an electrical mixer to receive the electrical illumination signal and the modulation signal, multiply the electrical illumination signal and the modulation signal in order to form a mixed signal, filter the mixed signal in order to form a filtered mixed signal, and output, based on the filtered mixed signal, a calibration signal associated with calibrating the imaging system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.