Fingerprint scanning device

Details Fingerprint scanning device Fingerprint scanning device

1974-10-07

1977-01-18

Segal, Robert

Optics: measuring and testing

Document pattern analysis or verification

3401463E, 356167, G06K 908

Patent

active

040036561

ABSTRACT:
A method and apparatus for rapidly scanning the finger of an individual with a monochromatic beam of light and for producing an output in accordance with the light reflected by the finger which corresponds to the fingerprint of the finger. The light beam is incident on the surface of the finger such that light incident upon the ridge of the finger is reflected along a predetermined path while light incident upon a trough of the finger is reflected along other paths. A detector is positioned in the predetermined path for detecting reflected light in that path. The detector therefore primarily detects light which is reflected from the ridge of the finger. The detected light is used to produce a signal indicative of the fingerprint of the finger.

REFERENCES:
patent: 1756232 (1930-04-01), Arnaud
patent: 3200701 (1965-08-01), White
patent: 3511571 (1970-05-01), Ogle
patent: 3864042 (1975-02-01), Leventhal

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