Currency validator using a photocoupler for image recognition using cylindrical lens
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United States of America Patent
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Jan 10, 1995
Issued Date -
N/A
app pub date -
Jun 24, 1993
filing date -
Oct 11, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
A photocoupler for image recognition is disclosed which comprises a case, a pair of a light emitting diode and a light sensitive transistor, and a cylindrical lens which forms the light emitted from the diode into a linear light image on a surface of an object having printed pattern. After reflected on a surface of the object, the linear light image passes through the cylindrical lens and is received by the light sensitive transistor.
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Cited Art Landscape
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