Sensor for detecting and measuring the angle of rotation of a plane of light polarization
US5229834A · kind A · utility
10Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Sep 9, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0322
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The sensor for detecting and measuring the angle of rotation of the polarization plane of light delivered by a sensitive system (19) subjected to an external phenomenon such as a magnetic field, for example, with the sensor being connected via an optical fiber (18) to a source of incoherent light (10) and essentially comprising the sensitive system (19), a quarterwave plate (22), a birefringent crystal (24), and an analyzer (26). The light flux provided by the sensor is spectrally modulated as a function of the angle of rotation of the plane of polarization of the light delivered by the above-mentioned system (19).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.