System and method for illuminating a platen in a live...

Details System and method for illuminating a platen in a live... System and method for illuminating a platen in a live...

2006-10-10

2006-10-10

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

Document pattern analysis or verification

C356S445000

Reexamination Certificate

active

07119890

ABSTRACT:
Light from an illumination source is injected into a prism of a print scanner through an illumination injection surface that is not directly imaged by an optical system and an image sensor of the print scanner. This light travels across the prism and hits a highly reflective surface of the prism. When this light hits the highly reflective surface, it is scattered and becomes diffused. Some of this diffused light remains in total internal reflection (TIR) within the prism and is reflected off the inside of the platen surface of the prism. The diffused light reflected off the inside of the platen surface is imaged by the optical system and the image sensor.

REFERENCES:
patent: 5623553 (1997-04-01), Sekiya
patent: 5963657 (1999-10-01), Bowker et al.
patent: 5986746 (1999-11-01), Metz et al.
patent: 6127674 (2000-10-01), Shinzaki et al.
patent: 6154285 (2000-11-01), Teng et al.
patent: 6324020 (2001-11-01), Teng et al.
patent: 6381347 (2002-04-01), Teng et al.
patent: 6954261 (2005-10-01), McClurg
patent: WO 2004/114078 (2004-12-01), None
Copy of International Preliminary Report on Patentability including Written Opinion for PCT/US2004/019239; 5 pages.
Copy of International Search Report for International Application No. PCT/US2004/019239; 7 pages.
Appendix F IAFIS Image Quality Specifications; Federal Bureau of Investigation—CJIS Electronic Fingerprint Transmission Specification; 17 pages.

Affiliated with

Also associated with

Rating

System and method for illuminating a platen in a live... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for illuminating a platen in a live..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for illuminating a platen in a live... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3682958