Invention Application
- Patent Title: MAGNETIC FIELD DETECTION APPARATUS AND ROTATION DETECTION APPARATUS
- Patent Title (中): 磁场检测装置和旋转检测装置
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Application No.: US15234042Application Date: 2016-08-11
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Publication No.: US20170059362A1Publication Date: 2017-03-02
- Inventor: Hiroshi NAGANUMA , Yohei HIROTA , Kunihiro UEDA
- Applicant: TDK Corporation
- Priority: JP2015-172723 20150902
- Main IPC: G01D5/16
- IPC: G01D5/16
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.
Public/Granted literature
- US10082406B2 Magnetic field detection apparatus and rotation detection apparatus Public/Granted day:2018-09-25
Information query
