Device for optically scanning a moving web of material and method for adjusting said device
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United States of America Patent
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-
Jun 29, 2004
Grant Date -
Oct 24, 2002
app pub date -
Apr 11, 2002
filing date -
Apr 18, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A device serves for optically scanning a moving material web. The device is formed by a CCD camera comprising a lens and a CCD receiving element, which is provided with photodiodes. So as to be able to exactly adjust the area of the material web scanned by means of the device, the CCD receiving element can be adjusted transversely in relation to the optical axis of the lens. For adjusting the CCD receiving element, a template with a structure is provided. This structure is detected by the photodiodes, and the signals emitted by the photodiodes act on a controlling device. The controlling device adjusts the CCD receiving element so that it is aligned with the structure of the template.
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