METHOD AND DEVICE FOR DETECTING FLAW OF WORK

Title:

METHOD AND DEVICE FOR DETECTING FLAW OF WORK

Document Type and Number:

WIPO Patent Application WO/2003/006969

Kind Code:

A1

Abstract:

The end face of an optical fiber connector (C) is imaged by a CCD camera (38). A personal computer (42) extracts a flaw portion from the obtained image data, and calculates the average luminosity of the flaw portion and that in the vicinity of the flaw portion to calculate the difference in luminosity between them. If the calculated luminosity difference, representing the depth of the flaw portion, exceeds a predetermined reference luminosity difference, the flaw is judged to affect the performance of the optical fiber and the optical fiber connector is judged to be no good. Accordingly, a work is rejected or accepted according to the depth of a flaw.

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Inventors:

KUME SHIGEFUMI (JP)
YOSHIDA KOUJI (JP)

Application Number:

PCT/JP2002/006986

Publication Date:

January 23, 2003

Filing Date:

July 10, 2002

Export Citation:

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Assignee:

TOKYO SEIMITSU CO LTD (JP)
NTT ADVANCED TECH KK (JP)
KUME SHIGEFUMI (JP)
YOSHIDA KOUJI (JP)

International Classes:

G01M11/00; G01M11/08; G01N21/88; (IPC1-7): G01N21/88; G01M11/00

Foreign References:

JP2000092319A	2000-03-31
JPH0273142A	1990-03-13
JPH0949717A	1997-02-18
JPS6315141A	1988-01-22
JP2000306964A	2000-11-02
JPH0933388A	1997-02-07

Attorney, Agent or Firm:

Matsuura, Kenzo (P.O. Box 176 Shinjuku Sumitomo Bldg. 20F, 6-1, Nishi-shinjuku 2-chom, Shinjuku-ku Tokyo, JP)

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