Patent · US Active

Visually variable security element and method for production thereof

US10525759B2 · kind B2 · utility

12Cited by

30References

35Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Michael Rahm · Bad Tölz, DE
Marius Dichtl · Munich, DE
Manfred Heim · Munich, DE

Key dates

Filing date	Dec 7, 2006
Grant date	Jan 7, 2020
Priority date	—
Expiry date	May 16, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB42D2035/14
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The invention relates to an optically variable security element (20) for securing valuable articles, having an achromatically reflective micropattern in the form of a mosaic (22) including a plurality of achromatically reflective mosaic elements (26-1, 26-2) that are characterized by the parameters size, contour shape, relief shape, reflectivity and spatial orientation and that form a predefined motif in that different groups of mosaic elements (26-1, 26-2) having different characteristic parameters reflect incident light (28) in different spatial regions (30). The mosaic elements (26-1, 26-2) exhibit a lateral dimension below the resolution limit of the eye.

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