Title:
METHOD AND APPARATUS FOR MEASURING DIAMETER AND/OR ECCENTRICITY OF COATING LAYER OF COATED OPTICAL FIBER
Document Type and Number:
Japanese Patent JP3672812
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To continuously measure at high speeds a diameter and/or an eccentricity of a primary and a secondary coating layers during manufacturing an optical fiber.
SOLUTION: An image is formed on an optical detector disposed opposite to a light source and substantially perpendicularly to an axial direction of the optical fiber by projecting a beam of light from the light source through the optical fiber in the direction substantially perpendicularly to the axial direction of the optical fiber. The diameter and/or the eccentricity of the primary coating layer of the coated optical fiber is judged by analyzing the image by a signal processor. The image generated by the optical detector includes a first and a second bright lines at interfaces of the primary and the secondary coating layers. The diameter and/or the eccentricity of the primary coating layer is judged with the use of a relative position of the bright lines.
Inventors:
Fleming Padderson
Christian Jacobsen
Christian Jacobsen
Application Number:
JP2000330492A
Publication Date:
July 20, 2005
Filing Date:
October 30, 2000
Export Citation:
Assignee:
Lucent Technologies, Inc.
International Classes:
C03C25/10; C03C25/12; G01B11/08; G01B11/24; G01M11/00; G02B6/44; (IPC1-7): G01M11/00; G01B11/08; G02B6/44
Domestic Patent References:
| JP63165726A | ||||
| JP5240608A | ||||
| JP9052736A | ||||
| JP11271175A |
Attorney, Agent or Firm:
Masao Okabe
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Hirofumi Mimata
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Hirofumi Mimata