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. 10, 2013
Filed:
Apr. 22, 2009
Taro Suzuki, Kanagawa, JP;
Taro Suzuki, Kanagawa, JP;
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Abstract
A measurement end of an optical fiber is passed through a through hole of a holder. While the optical fiber is being rotated by using the through hole as a guide, output light from the measurement end is received by light receiving means. Coordinates of at least three points on a locus circle of the output light are measured to calculate a size of the locus circle. On the basis of the calculated size, the exit angle of the optical fiber is measured. The through hole of the holder has a small-diameter portion on a front side and a large-diameter portion on a rear side. An inside diameter of the small-diameter portion is 0.1 μm to 1.0 μm larger than a diameter of a bare fiber, and an inside diameter of the large-diameter portion is larger than a diameter of a sheathed fiber.