Device for imaging the papillary lines of a finger

Details Device for imaging the papillary lines of a finger Device for imaging the papillary lines of a finger

2008-01-01

2008-01-01

Chawan, Sheela (Department: 2624)

Image analysis

Applications

Personnel identification

C382S127000, C250S227280, C356S071000

Reexamination Certificate

active

10451406

ABSTRACT:
Device has a transparent body (1) with a support surface (2). Light is incident on the surface at an angle less than that required for total internal reflection. In the areas of the fingerprint ridges evanescent fields are excited. Propagated light (12-14) is reflected from the surface (2) and incident on a detector (22) at angles within the angular range for total internal reflection.

REFERENCES:
patent: 4681435 (1987-07-01), Kubota et al.
patent: 5096290 (1992-03-01), Ohta
patent: 5233404 (1993-08-01), Lougheed et al.
patent: 5621516 (1997-04-01), Shinzaki et al.
patent: 5623553 (1997-04-01), Sekiya
patent: 5796858 (1998-08-01), Zhou et al.
patent: 6115483 (2000-09-01), Suga
patent: 6127674 (2000-10-01), Shinzaki et al.
patent: 6175407 (2001-01-01), Sartor
patent: WO 01/18741 (2001-03-01), None
patent: WO 01/88835 (2001-11-01), None

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