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:
Jan. 28, 2014
Filed:
Mar. 26, 2013
Applicant:
Olympus Corporation, Tokyo, JP;
Inventors:
Makoto Tanabe, Hachioji, JP;
Hiroki Takagi, Fujimi, JP;
Assignee:
Olympus Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); G02B 6/06 (2006.01); C03C 13/04 (2006.01); C03B 37/023 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a method for manufacturing an optical fiber that is inserted into an insertion portion of an endoscope and guides light, wherein inside an upright fiber drawing furnace, inside a hollow clad tube including a clad glass having a viscosity ηof 5.0<Log η<7.0 at a temperature at which a viscosity ηof a core glass becomes Log η=3.5, the core glass in a fluidized state runs down by gravity, whereby the core glass and the clad glass are integrated.