Optical sensor for opaque and non-opaque materials
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Oct 22, 1999
filing date -
Oct 22, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sensor is capable of detecting clear or opaque materials. The sensor can be disposed around a clear tube which carries a material such as liquid. The sensor utilizes a thin beam light source and a wide area photo detector. A window comparator determines the presence or absence of a material such as liquid.
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