Patent · US Active

Security element having a microstructure

US9016726B2 · kind B2 · utility

17Cited by

5References

28Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Andreas Rauch · Ohlstadt, DE
Michael Rahm · Bad Tölz, DE
Manfred Heim · Munich, DE
Christian Fuhse · Otterfing, DE

Key dates

Filing date	Nov 15, 2010
Grant date	Apr 28, 2015
Priority date	—
Expiry date	Aug 19, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB42D2035/36
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The invention relates to a security element for security papers, value documents and the like with at least one microstructure which has a visual appearance that is viewing angle-dependent in transmission, whereby the at least one microstructure is formed from an arrangement of a multiplicity of structure elements with a characteristic structure spacing of 1 μm or more. According to the invention it is provided that the security element contains at least one motif image which, through the viewing angle-dependent visual appearance of the microstructure, is visible in transmission from certain viewing angles, and invisible in transmission from other viewing angles, and that the microstructure and the motif image together have a thickness of 50 μm or less.

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