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:
Mar. 02, 2010
Filed:
May. 22, 2006
Masakazu Takabayashi, Tokyo, JP;
Kiichi Yoshiara, Tokyo, JP;
Yasuhisa Shimakura, Tokyo, JP;
Sadayuki Matsumoto, Tokyo, JP;
Tateki Mitani, Tokyo, JP;
Shigeki Kanamaru, Tokyo, JP;
Kazushi Ishii, Tokyo, JP;
Masakazu Takabayashi, Tokyo, JP;
Kiichi Yoshiara, Tokyo, JP;
Yasuhisa Shimakura, Tokyo, JP;
Sadayuki Matsumoto, Tokyo, JP;
Tateki Mitani, Tokyo, JP;
Shigeki Kanamaru, Tokyo, JP;
Kazushi Ishii, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, the optical fiber being disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is generated by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.