The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2022
Filed:
Sep. 28, 2018
Citizen Finedevice Co., Ltd., Yamanashi, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Shinshu University, Nagano, JP;
CITIZEN FINEDEVICE CO., LTD., Yamanashi, JP;
CITIZEN WATCH CO., LTD., Nishitokyo, JP;
SHINSHU UNIVERSITY, Nagano, JP;
Abstract
To provide a magnetic sensor element and a magnetic sensor device that can be easily manufactured and can reduce a loss of light to the extent possible. The above-described problem is solved by a magnetic sensor element comprising a planar lightwave circuit () provided with a light branching part (), an input optical fiber () and an output optical fiber () connected to the planar lightwave circuit (), a metal magnetic body type light transmitting film () that is provided on one end surface of the planar lightwave circuit () and transmits light entered from the input optical fiber (), and a reflecting film () that is provided on the metal magnetic body type light transmitting film () and reflects the transmitted light. The output optical fiber () is a polarization-plane maintaining optical fiber, and the input optical fiber () and the output optical fiber () are aligned and connected to the planar lightwave circuit ().