Apparatus and method for electronically acquiring fingerprint images with low cost removable platen and separate imaging device
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United States of America Patent
Stats
-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Sep 16, 1994
filing date -
Sep 16, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A thin, inexpensive, removable platen for a direct fingerprint reader without a permanently attached platen. A removable platen is formed as a transparent area on a credit card, passport or identification card or as a separate card. The portable platen on the card is inserted over an imaging area of the direct fingerprint reader. Light from the direct fingerprint reader passes through an optical surface formed on the underside of the portable platen, is reflected off the fingerprint and passes back through the optical surface to the imaging apparatus where the image is digitized and analyzed. The optical surface is formed such that the incident light is not refracted away from the fingerprint and the reflected light from the fingerprint is not refracted away from the imaging apparatus.
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