Self-mixing interferometry device configured for non-reciprocal sensing
US11874110B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2020 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0304
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems concerning non-reciprocal sensing paths for a self-mixing interferometry operation are disclosed herein. Optical components may be used to direct light transmit from a light source along an illumination path. The optical components may additionally return light to the light source after being reflected from a target and may direct the returned light along a collection path. The illumination path and the collection path may be at least partially non-reciprocal so that the transmitted light and the returned light follow along partially different paths. Once the received light is received within a cavity of the light source, a self-mixing interferometry operation may be performed and may be used to detect a property of the target in relation to the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.