Face lighting for edge location in catalytic converter...

Details Face lighting for edge location in catalytic converter... Face lighting for edge location in catalytic converter...

2007-10-16

2007-10-16

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

C356S237600

Reexamination Certificate

active

10955428

ABSTRACT:
A method and system for inspecting an object having a planar face with surface variations such as catalytic converters. Light sources are placed above the planar face of the object for lighting the face of the object. At least one obscuration is positioned proximate the planar face of the object to limit the lighting of the planar face of the object to thereby provide a low depth field of lighting. The planar face of the object is imaged to provide an image representation of the planar face of the object. The image representation of the planar face of the object is evaluated to characterize edge chip damage.

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patent: 6084670 (2000-07-01), Yamazaki et al.
patent: 2001/0028452 (2001-10-01), Yoneda
patent: 2002/0105655 (2002-08-01), Svetkoff et al.
patent: 2003/0081202 (2003-05-01), Yoneda
patent: 2003/0174320 (2003-09-01), Yokoyama et al.
patent: 2004/0217287 (2004-11-01), Watanabe et al.

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