Method and device for optically measuring the surface shape and for the optical surface inspection of moving strips in rolling and processing installations
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United States of America Patent
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Jan 8, 2008
Grant Date -
Jul 21, 2005
app pub date -
Feb 6, 2003
filing date -
Feb 7, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method and a device for optically measuring the surface shape and for the optical surface inspection of moving elongated bodies, according to which surface shape measurement and surface inspection are integrated. A projector applies a line pattern to the object to be measured. A camera registers the surface of the object to be measured and compares the image information with a reference pattern. Two high-resolution cameras additionally detect surface defects on the object to be measured. The inventive measuring technique is especially suitable for a combined planarity and surface measurement of metal strips in rolling installations.
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