Patent · US Active

Verification apparatus and method for verifying diffractive and/or reflective security features of security documents

US8681325B2 · kind B2 · utility

1Cited by

4References

28Claims

0Family size

Assignee

BUNDESDRUCKEREI GMBH · DE

Inventors

Olaf Dressel · Wustermark, DE
Andre Leopold · Berlin, DE
Manfred Paeschke · Wandlitz, DE

Key dates

Filing date	Apr 14, 2010
Grant date	Mar 25, 2014
Priority date	—
Expiry date	Feb 23, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06V10/145
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A verification apparatus for security documents having at least one diffractive and/or reflective security feature, includes a support device having a support surface or plane for receiving the security documents, an optical capturing device, an illuminating device for illuminating the security document, and an evaluation device which evaluates information detected by the capturing device to perform a verification of the at least one security feature. A screen is disposed between the support surface or plane and the capturing device. Light diffracted or reflected by the at least one security feature can be imaged on the screen for detection by the capturing device. The screen can be controlled with regard to at least one optical property, particularly the opacity thereof. A verification method, wherein the opacity of the screen is varied, is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.