Global Patent Index - EP 2303594 B1

EP 2303594 B1 2012-01-04 - SECURITY ELEMENT

Title (en)

SECURITY ELEMENT

Title (de)

SICHERHEITSELEMENT

Title (fr)

ÉLÉMENT DE SÉCURITÉ

Publication

EP 2303594 B1 (DE)

Application

EP 09768928 A

Priority

  • EP 2009004326 W
  • DE 102008029638 A

Abstract (en)

[origin: WO2009156079A1] The invention relates to a security element for security papers, value documents and the like, comprising a microoptical magnification system of the moiré type having a first motif image made of a planar periodic or at least local periodic arrangement of a plurality of first micro motif elements (38), that create hidden image information, and a planar periodic or at least local periodic arrangement of a plurality of micro focusing elements (34) for the moiré-magnified viewing of the motif image, wherein the first micro motif elements (38) are composed of nematic liquid crystal material and form a phase-shifting layer for light from a preset wavelength range, and wherein the magnified moiré image substantially can only be detected when looking at the security element through a polarizer (40).

IPC 8 full level

B42D 15/00 (2006.01)

CPC

B42D 25/342 (2014.10); B42D 25/391 (2014.10)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

DOCDB simple family

DE 102008029638 A1 20091224; AT 539898 T 20120115; EP 2303594 A1 20110406; EP 2303594 B1 20120104; US 2011109078 A1 20110512; US 9399366 B2 20160726; WO 2009156079 A1 20091230