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:
May. 09, 2006
Filed:
Sep. 19, 2001
Applicants:
Koji Okamoto, Kawagoe, JP;
Koji Hirose, Chofu, JP;
Inventors:
Koji Okamoto, Kawagoe, JP;
Koji Hirose, Chofu, JP;
Assignee:
Kyowa Electronic Instruments Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A low coherence light of wide range is fed into a Fabry-Perot load cell having a measured clearance varied in response to physical quantities such as force and pressure or the like to modulate its wavelength. The measured clearance is calculated by the variable gap Fabry-Perot interferometer and the signal processing part in the optical sensor and further the physical quantities are measured.