Magnetic field detection apparatus and rotation detection apparatus
US10082406B2 · kind B2 · utility
0Cited by
2References
13Claims
0Family size
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Key dates
| Filing date | Aug 11, 2016 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Oct 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field detection apparatus has a first magnetic sensor and a bias magnet positioned to face the first magnetic sensor. The bias magnet has a magnetic pole surface that faces the first magnetic sensor and that applies a bias magnetic field to the first magnetic sensor. The first magnetic sensor detects magnetic field in a first direction that is parallel to the magnetic pole surface. The magnetic pole surface of the bias magnet has a plurality of grooves arranged in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.