Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors
US5631559A · kind A · utility
32Cited by
48References
69Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0325
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor system includes a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, at least one polarizer or polarizing element and a detector disposed about the sensing element. The sensing element is responsive to an external magnetic field. In one embodiment, the optical system and sensing element can be arranged to measure the strength of a magnetic field. In another embodiment the optical system and sensing element can be arranged to measure the rotational speed of rotating members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.