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:
Aug. 08, 2017
Filed:
Feb. 09, 2015
Applicants:
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
The University of Tokyo, Tokyo, JP;
Inventors:
Assignees:
SUBARU CORPORATION, Tokyo, JP;
UNIVERSITY OF TOKYO, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01H 9/00 (2006.01); G01N 29/24 (2006.01); G01D 5/353 (2006.01);
U.S. Cl.
CPC ...
G01N 29/2418 (2013.01); G01H 9/004 (2013.01); G01D 5/35316 (2013.01); G01N 2291/023 (2013.01); G01N 2291/0289 (2013.01);
Abstract
A vibration detection apparatus includes a ring laser resonator, a fiber Bragg grating and a detection system. The ring laser resonator generates a laser beam propagating a ring shaped optical path. The fiber Bragg grating is disposed in the ring laser resonator such that the laser beam enters the grating, and has a transmittance distribution characteristic of transmitted light in a wavelength direction, which changes in accordance with vibration of an object. The detection system detects the vibration based on the transmitted light through the fiber Bragg grating.