Assembly for detecting the superficial structures of fingers and/or palms
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United States of America Patent
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-
Jun 18, 2002
Grant Date -
N/A
app pub date -
Feb 5, 2001
filing date -
Jun 4, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An arrangement for detecting the surface structures of fingers, palms or other parts of the skin placed on an image scanning surface, wherein the image scanning surface is formed at a scanning prism, an illumination beam path is directed to the image scanning surface in the interior of the scanning prism, and the light reflected from the latter impinges on the reception surface of an optoelectronic detection device. In an arrangement of the type described above, a part of the illumination beam path or a separate illumination beam path is directed to reference structures which are fixed in place and, from the latter, to the reception surface, wherein separate partial areas of the reception surface are reserved for the detection of the surface structures and for the detection of reference structures.
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