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. 11, 1997
Filed:
Oct. 12, 1995
Applicant:
Inventors:
Yuzo Tokumaru, Yokohama, JP;
Mikio Kobayashi, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 98 ;
Abstract
A TV camera picks up images of the first and second polarization-maintaining optical fibers, while light is irradiated to their side. First and second values are calculated based on the luminance peaks of the images by using an image processing unit connected to the TV camera. The axes of respective cores and respective stress applying members of the polarization-maintaining optical fibers can be easily aligned by moving the fibers such that the first and second values displayed on said display are equal.