Title:
MAGNETIC DETECTION SENSOR, AND MAGNETIC MEASURING APPARATUS
Document Type and Number:
Japanese Patent JP2016197068
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic detection sensor that can easily recover the sensitivity of magnetism detection without having to adjust the optical path even if a magnetic reaction unit is replaced.SOLUTION: A magnetic sensor 4 is equipped with a magnetic reaction unit 34 having a gas cell 53 filled with gas that rotates the polarization plane of a laser beam 43 passing correspondingly to the intensity of a magnetic vector 58, a light guiding unit 38 that guides the laser beam 43 to the magnetic reaction unit 34 and a light detecting unit 41 that detects the rotation angle of the polarization plane of the laser beam 43 having passed the magnetic reaction unit 34. The light guiding unit 38 and the light detecting unit 41 are fixed in their relative positions, and the magnetic reaction unit 34 is fitted detachably to the light guiding unit 38 and the light detecting unit 41.SELECTED DRAWING: Figure 6
Inventors:
UENO HITOSHI
Application Number:
JP2015077457A
Publication Date:
November 24, 2016
Filing Date:
April 06, 2015
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G01R33/26; A61B5/05; G01R33/032
Attorney, Agent or Firm:
Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai
Keisuke Nishida
Satoshi Nakai