EP 2558304 A1 20130220 - SECURITY ELEMENT HAVING A LIGHT-GUIDING STRUCTURE THAT IS LOCALLY MODIFIED IN RESPECT OF THE LIGHT PROPAGATION PROPERTIES AND METHOD FOR PRODUCING SUCH A SECURITY ELEMENT
Title (en)
SECURITY ELEMENT HAVING A LIGHT-GUIDING STRUCTURE THAT IS LOCALLY MODIFIED IN RESPECT OF THE LIGHT PROPAGATION PROPERTIES AND METHOD FOR PRODUCING SUCH A SECURITY ELEMENT
Title (de)
SICHERHEITSELEMENT MIT EINER LOKAL HINSICHTLICH IHRER LICHTAUSBREITUNGSEIGENSCHAFTEN MODIFIZIERTEN LICHTLEITENDEN STRUKTUR UND VERFAHREN ZUR HERSTELLUNG EINES SOLCHEN SICHERHEITSELEMENTS
Title (fr)
ÉLÉMENT DE SÉCURITÉ DOTÉ D'UNE STRUCTURE DE GUIDAGE DE LUMIÈRE LOCALEMENT MODIFIÉE POUR CE QUI EST DE SES PROPRIÉTÉS DE PROPAGATION DE LA LUMIÈRE ET PROCÉDÉ DE FABRICATION D'UN TEL ÉLÉMENT DE SÉCURITÉ
Publication
Application
Priority
- DE 102010015258 A 20100415
- EP 2011055043 W 20110331
Abstract (en)
[origin: WO2011141227A1] The invention relates to a method for producing a security element (1) and to a security element (1), in particular for a value or security document, comprising a light-guiding structure, wherein the light-guiding structure comprises a transparent core (2) and a likewise transparent cladding (7), and wherein the refractive index of the core (2) is greater than the refractive index of the cladding such that a total reflection for light wave guidance can take place at the interface between core (2) and cladding (7) and thus a light wave guidance to an exit surface (75) of the core (2) is possible. A volume transmission property of the core (2) is locally modified such that during light guidance in the light-guiding structure an intensity pattern of the emerging light, which is dependent on the exit location and is caused by the locally modified volume transmission property can be observed at the exit surface (75).
IPC 8 full level
B42D 15/00 (2006.01)
CPC (source: EP US)
B42D 25/20 (2014.10 - US); B42D 25/29 (2014.10 - EP); B42D 25/405 (2014.10 - EP); B44F 1/06 (2013.01 - EP US); B42D 25/47 (2014.10 - EP); B42D 2033/04 (2022.01 - EP); B42D 2033/06 (2022.01 - EP); B42D 2033/18 (2022.01 - EP); B42D 2033/20 (2022.01 - EP); B42D 2035/20 (2022.01 - EP)
Citation (search report)
See references of WO 2011141227A1
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)
DE 102010015258 A1 20111020; EP 2558304 A1 20130220; EP 2558304 B1 20140507; PL 2558304 T3 20140930; WO 2011141227 A1 20111117
DOCDB simple family (application)
DE 102010015258 A 20100415; EP 11711369 A 20110331; EP 2011055043 W 20110331; PL 11711369 T 20110331