Method for providing a detection signal for objects to be detected
US11703568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2018 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Nov 6, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3507
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for providing a detection-signal for objects to be detected—at least a first and second light-beam including different frequencies being generated with a first optical non-linear 3-wave-process from a light-beam of a light-source including an output-frequency, and the first light-beam including a reference-frequency being detected, and the second light-beam including an object-frequency being emitted and received after reflection on an object, and the light-beam including the output-frequency and the second light-beam including the object-frequency being superposed, and a reference-beam including a reference-frequency being generated with a second optical non-linear 3-wave-process from the two superposed light-beams including the output-frequency and including the object-frequency, and a detection-signal being generated so that the object-distance is determinable due to the aforementioned superposition based on the time-difference between the detection of the first light-beam including the reference-frequency and a detection of a change of the reference-beam including the reference-frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.