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:
Dec. 16, 2008
Filed:
Oct. 19, 2006
Keiichi Horimoto, Sakura, JP;
Akira Sakamoto, Funabashi, JP;
Satoshi Okude, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
One embodiment of the present invention provides an optical detection sensor configured so as to irradiate exit light emitted from a light source onto an object to be measured, the object being disposed a relative distance away from an end face of a first optical fiber, and receive the reflection light therefrom with a second and a third optical fiber, thereby computing a displacement amount of the object. In this sensor, the first optical fiber is disposed so that an angle between a longitudinal direction thereof and a normal line to an incident surface of the object becomes θ; the second and the third optical fiber are disposed so as to be mutually parallel and so that an angle between a longitudinal direction of the second and the third optical fiber and the normal line becomes θ; the first optical fiber is disposed symmetrically with the second and the third optical fiber with respect to the normal line; and the first to the third optical fiber have a dNA/dλ of 4×10or less with respect to a wavelength of the light source.