Method and device for inspecting defect of sheet-shaped...

Details Method and device for inspecting defect of sheet-shaped... Method and device for inspecting defect of sheet-shaped...

2005-08-16

2005-08-16

Stafira, Michael P. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

C356S429000

Reexamination Certificate

active

06930772

ABSTRACT:
A method for detecting a flaw accompanied with an optical defect if any on or in a sheet-like transparent body which is moved, and determine its type comprises placing an illuminator on one side of a sheet-like transparent body, and placing a (one-dimensional) image pickup on the opposite side. The illuminator means comprises lighting and darkening portions, and the image pickup is placed relative to the illuminator such that the boundary between the portions appears on the image pickup as a straight line in parallel with the long axis of the pickup. Image data created from the image pickup, are subjected to contrast enhancement to provide contrast enhanced image data which are displayed as a contrast enhanced image. The sequence (flaw pattern) of light spots and dark spots appears in the enhanced image as of the sheet-like transparent body is moved, and determines the type of flaw.

REFERENCES:
patent: 5018867 (1991-05-01), Piironen
patent: 5243402 (1993-09-01), Weber et al.
patent: 5452079 (1995-09-01), Okugawa
patent: 5691811 (1997-11-01), Kihira
patent: 5870204 (1999-02-01), Chiu et al.
patent: 6392754 (2002-05-01), Pingel et al.
patent: 6570651 (2003-05-01), Haubold et al.
patent: 2004/0066502 (2004-04-01), Ohtsu
patent: 8-128968 (1996-05-01), None
patent: 8-178855 (1996-07-01), None
patent: 8-220021 (1996-08-01), None
Laguesse, Michel F. “Optical Detection and Localization of Holes in Strips Using a Fluorescent Fiber Sensor” IEEE Transactions on Instrumentation and Measurement, vol. 39, No. 1, Feb. 1990.
International Search Report, Sep. 10, 2002.

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