EP 4121299 B1 20230726 - FLAT SECURITY ELEMENT WITH OPTICAL SECURITY FEATURES
Title (en)
FLAT SECURITY ELEMENT WITH OPTICAL SECURITY FEATURES
Title (de)
FLÄCHIGES SICHERHEITSELEMENT MIT OPTISCHEN SICHERHEITSMERKMALEN
Title (fr)
ÉLÉMENT DE SÉCURITÉ PLAT PRÉSENTANT DES CARACTÉRISTIQUES DE SÉCURITÉ OPTIQUE
Publication
Application
Priority
- AT 502252020 A 20200316
- EP 2021056474 W 20210315
Abstract (en)
[origin: WO2021185729A1] The invention relates to a flat security element (4) with optical security features, comprising at least one first surface region (1) with a first sub-wavelength structure, the structure elements that define the first sub-wavelength structure repeating themselves periodically in the plane of the security element (4). In order to portray an easy-to-produce motif with higher protection against forgery by means of at least two different colour impressions, according to the invention the first sub-wavelength structure of at least a partial region of the first surface region (1) is additionally provided with an interference coating (5) to create a colour shift effect.
IPC 8 full level
B42D 25/324 (2014.01)
CPC (source: AT EP US)
B42D 25/324 (2014.10 - AT EP US); B42D 25/328 (2014.10 - EP US); B42D 25/36 (2014.10 - EP); B42D 25/364 (2014.10 - EP); B42D 25/378 (2013.01 - EP US); B42D 25/29 (2014.10 - AT US); B42D 25/364 (2014.10 - US); B42D 25/373 (2014.10 - US)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2021185729 A1 20210923; AT 523690 A1 20211015; AT 523690 B1 20220315; CA 3169081 A1 20210923; EP 4121299 A1 20230125; EP 4121299 B1 20230726; EP 4121299 C0 20230726; JP 2023523383 A 20230605; US 2023125767 A1 20230427
DOCDB simple family (application)
EP 2021056474 W 20210315; AT 502252020 A 20200316; CA 3169081 A 20210315; EP 21712759 A 20210315; JP 2022555739 A 20210315; US 202117911752 A 20210315