Optical device for sensing magnetic inductions
US5119024A · kind A · utility
20Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1991 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Mar 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/032
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring a magnetic induction comprises an evaluation device including a source for emitting light and a receiver for receiving light. A resonator is located in the light path between the source and the receiver and comprises first and second parallel mirrors and a gaseous medium occupying the space between the two mirrors. A converter is coupled to one of the mirrors for shifting one of said mirrors along an optical axis of the resonator so that the optical length of the resonator varies in response to the induction to be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.