Patent · US Active

Security element having a lenticular image

US10105982B2 · kind B2 · utility

2Cited by

10References

17Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Christian Fuhse · Otterfing, DE
Michael Rahm · Bad Tölz, DE
André Gregarek · Munich, DE

Key dates

Filing date	Mar 31, 2015
Grant date	Oct 23, 2018
Priority date	—
Expiry date	Apr 28, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG02B3/005
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A security element for securing security papers, value documents and other data carriers, has a lenticular image that, from different viewing directions, displays at least two appearances. The lenticular image includes a lens grid composed of a plurality of microlenses and a laser-sensitive motif layer arranged spaced apart from the lens grid. The laser-sensitive motif layer comprises, in two or more motif layer sub-regions, different markings introduced by the action of laser radiation and that, when the motif layer is viewed with the lens grid, produce at least two appearances. The lens grid is divided into two or more lens grid sub-regions in which the microlenses each comprise differently refractive lens surface forms. The different lens grid sub-regions are congruent with the different motif layer sub-regions, and the markings of the motif layer sub-regions being produced by laser impingement of the lens grid sub-regions.

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