Patent · US Expired

Structure arrangement having an optical-diffraction effect

US6700705B1 · kind B1 · utility

0Cited by

5References

9Claims

0Family size

Assignees

Leonhard Kurz GmbH & Co. KG · DE
Deutsche Bundesbank · DE

Inventors

Werner Reinhart · Zirndorf, DE
Jürgen Herrmann · Rosenheim, DE

Key dates

Filing date	Jan 27, 1997
Grant date	Mar 2, 2004
Priority date	—
Expiry date	Jan 27, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/16
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In order to improve a structure arrangement comprising a plurality of portions having a relief structure with an optical-diffraction effect, in particular for visually identifiable optical security elements for value-bearing documents, for example banknotes, credit cards, passes or cheque documents, or other articles to be safeguarded, in such a way that it can give a viewer an image impression which in particular is more homogenous and more brilliant than is possible with known structure arrangements, it is proposed that a predominant number of the portions is of strip or band configuration.

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