EP 2303594 B1 20120104 - SECURITY ELEMENT
Title (en)
SECURITY ELEMENT
Title (de)
SICHERHEITSELEMENT
Title (fr)
ÉLÉMENT DE SÉCURITÉ
Publication
Application
Priority
- EP 2009004326 W 20090616
- DE 102008029638 A 20080623
Abstract (en)
[origin: US9399366B2] The present invention relates to a security element for security papers, value documents and the like, having a micro-optical moiré magnification arrangement having a first motif image that consists of a planar periodic or at least locally periodic arrangement of a plurality of first micromotif elements (38) that produce a hidden piece of image information, and a planar periodic or at least locally periodic arrangement of a plurality of microfocusing elements (34) for the moiré-magnified viewing of the first micromotif elements of the motif image, the first micromotif elements (38) being formed from nematic liquid crystal material and forming a phase-shifting layer for light from a specified wavelength range, and the magnified moiré image being perceptible substantially only upon viewing the security element through a polarizer.
IPC 8 full level
B42D 15/00 (2006.01)
CPC (source: EP US)
B42D 25/342 (2014.10 - EP US); B42D 25/391 (2014.10 - EP US)
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 (publication)
US 2011109078 A1 20110512; US 9399366 B2 20160726; AT E539898 T1 20120115; DE 102008029638 A1 20091224; EP 2303594 A1 20110406; EP 2303594 B1 20120104; WO 2009156079 A1 20091230
DOCDB simple family (application)
US 99968509 A 20090616; AT 09768928 T 20090616; DE 102008029638 A 20080623; EP 09768928 A 20090616; EP 2009004326 W 20090616