Method for detecting defect in bottle
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United States of America Patent
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Oct 16, 2001
Grant Date -
N/A
app pub date -
Nov 30, 1999
filing date -
Nov 30, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method for detecting a defect in a barrel portion of a bottle. The defect in the barrel portion of the bottle includes a thin blister and a longitudinal streak. The defect in the bottle barrel is detected by imaging the bottle barrel with a CCD camera based on light which has passed through a light shield plate having a plurality of oblique slits and the bottle barrel, and processing the image of the bottle barrel generated by the CCD camera to determine whether or not the defect is present.
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