Method and apparatus for producing a directly viewable image of

Details Method and apparatus for producing a directly viewable image of Method and apparatus for producing a directly viewable image of

1995-05-03

1997-04-08

Johns, Andrew

Image analysis

Applications

Personnel identification

356 71, G06K 900

Patent

active

056195869

ABSTRACT:
A directly viewable fingerprint image is formed by illuminating a transparent planar substrate from one surface with collimated light, the substrate having pressed against the other surface a fingerprint to be imaged. Light striking the surface against which ridges of the fingerprint are in contact undergoes internal reflection within the substrate and causes a directly viewable image of the fingerprint to be formed by a direct image producing means.

REFERENCES:
patent: 4340300 (1988-07-01), Ruell
patent: 4703182 (1987-10-01), Kroneis et al.
patent: 4728186 (1988-03-01), Eguchi et al.
patent: 5077803 (1991-12-01), Kato et al.
patent: 5088817 (1992-02-01), Igaki et al.
patent: 5099131 (1992-03-01), Brownrigg et al.
patent: 5177802 (1993-01-01), Fujmoto et al.

Affiliated with

Also associated with

Rating

Method and apparatus for producing a directly viewable image of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for producing a directly viewable image of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for producing a directly viewable image of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2402099