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. 03, 2024
Filed:
Sep. 03, 2021
Applicant:
Furukawa Electric Co., Ltd., Tokyo, JP;
Inventors:
Hideaki Hasegawa, Tokyo, JP;
Hiroyuki Tamaoka, Tokyo, JP;
Takeshi Yagi, Tokyo, JP;
Shinichi Arai, Tokyo, JP;
Assignee:
FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01L 11/02 (2006.01); G02B 6/02 (2006.01); G02B 6/255 (2006.01);
U.S. Cl.
CPC ...
G01L 11/025 (2013.01); G02B 6/0229 (2013.01); G02B 6/2551 (2013.01);
Abstract
A pressure sensor includes: a light source that outputs signal light; a sensor optical fiber where the signal light is input and the signal light is propagated with a loss of 0.3 dB/m or more; and an optical receiver that receives the signal light propagated through the sensor optical fiber. Further, pressure applied to the sensor optical fiber is detected on a basis of intensity of the signal light received by the optical receiver.