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. 15, 2022
Filed:
Mar. 25, 2021
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventor:
Yuhei Urata, Ibaraki, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/08 (2006.01); C03B 37/018 (2006.01); G01B 11/24 (2006.01); G02B 6/028 (2006.01); G01M 11/00 (2006.01); G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
G01B 11/08 (2013.01); C03B 37/018 (2013.01); G01B 11/2408 (2013.01); G01M 11/37 (2013.01); G02B 6/02 (2013.01); G02B 6/028 (2013.01);
Abstract
A method of measuring a diameter of a core portion of an optical fiber preform including the core portion having a relatively high refractive index and a clad portion having a relatively low refractive index. The method includes applying parallel light to the optical fiber preform, and measuring the diameter of the core portion from an image captured by receiving the light having transmitted through the optical fiber preform.