Displacement apparatus using a magnetic optic sensor and position dependent magnetic field
US5859531A · kind A · utility
10Cited by
12References
14Claims
0Family size
Inventors
Key dates
| Filing date | Jul 25, 1996 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jul 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/344
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for detecting relative displacement includes a first magnet for producing a first magnetic field along an axis; a second magnet for producing a second magnetic field along the axis; the first and second magnetic fields interacting to produce a position-dependent magnetic field along the axis; a sensor disposed for detecting the position-dependent magnetic field; and a movable element for causing relative displacement between the position-dependent magnetic field and the sensor. In a preferred embodiment, the sensor is a magneto-optic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.