EP 3317111 A1 20180509 - SECURITY ELEMENT WITH COLOUR-FILTERING GRATING
Title (en)
SECURITY ELEMENT WITH COLOUR-FILTERING GRATING
Title (de)
SICHERHEITSELEMENT MIT FARBFILTERNDEM GITTER
Title (fr)
ÉLÉMENT DE SÉCURITÉ COMPORTANT UNE GRILLE FILTRANT LES COULEURS
Publication
Application
Priority
- DE 102015008655 A 20150703
- EP 2016001091 W 20160627
Abstract (en)
[origin: WO2017005346A1] The invention relates to a security element for a valuable document, wherein the security element (1) comprises a two-dimensionally regular pattern (6) of individual cylindrical surface elements (3) composed of high refractive index, more particularly metallic, material, which lie in a grating plane (7), are spaced apart from one another by gaps (4) and are embedded into a dielectric (2, 5) on all sides, wherein the regular pattern (6) has a periodicity (d) of 100 nm to 800 nm, preferably of 200 nm to 500 nm, in at least two directions running parallel to the grating plane, wherein the gaps (4) between the surface elements (3) likewise comprise only dielectric (2, 5) in a region of at least 1 μm perpendicular to the grating plane (7).
IPC 8 full level
B42D 25/00 (2014.01)
CPC (source: CN EP)
B42D 25/00 (2014.10 - CN EP)
Citation (search report)
See references of WO 2017005346A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102015008655 A1 20170105; CN 107743446 A 20180227; CN 107743446 B 20190903; EP 3317111 A1 20180509; EP 3317111 B1 20190807; WO 2017005346 A1 20170112
DOCDB simple family (application)
DE 102015008655 A 20150703; CN 201680035408 A 20160627; EP 16733880 A 20160627; EP 2016001091 W 20160627