Optical finger print input device
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United States of America Patent
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N/A
Issued Date -
Aug 23, 2007
app pub date -
Sep 14, 2004
filing date -
Mar 29, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical fingerprint input device by where a mark identification is attached to one surface of a prism and reflected by light beams coming from an external light source to be incident on a lens such that erroneous recognition caused by a fingerprint afterimage of water, sweat or oil remaining on the fingerprint contact surface of the prism can be prevented to improve the security of the device, and a visual advertisement can be additionally obtained when a mark identification logo for advertisement is attached on one surface of the prism.
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