EP 1951528 B1 20090225 - OPTICAL STRUCTURE, ESPECIALLY FOR A SECURITY DOCUMENT AND/OR A DOCUMENT OF VALUE
Title (en)
OPTICAL STRUCTURE, ESPECIALLY FOR A SECURITY DOCUMENT AND/OR A DOCUMENT OF VALUE
Title (de)
OPTISCHE STRUKTUR, SPEZIELL FÜR EIN SICHERHEITSDOKUMENT UND/ODER EIN DOKUMENT VON WERT
Title (fr)
STRUCTURE OPTIQUE, NOTAMMENT POUR UN DOCUMENT DE SECURITE ET/OU DE VALEUR
Publication
Application
Priority
- FR 2006051186 W 20061116
- FR 0553480 A 20051116
Abstract (en)
[origin: US8439402B2] An optical structure comprising first and second opposite outside faces, at least a first interface comprising a first screen of microreliefs and arranged in such a manner that travel through the first interface from the first outside face towards the second outside face, passes from a first medium having a first refractive index to a second medium having a second refractive index that is greater than the first, and at least one second interface comprising a second screen of microreliefs and arranged in such a manner that travel through the second interface from the first outside face towards the second outside face, passes from a third medium having a third refractive index to a fourth medium having a fourth refractive index less than the third.
IPC 8 full level
B42D 25/00 (2014.01); B42D 15/00 (2006.01); G07D 7/12 (2006.01)
CPC (source: EP US)
B42D 25/29 (2014.10 - EP US); B42D 25/324 (2014.10 - US); G07D 7/003 (2017.05 - EP US); B42D 2035/20 (2022.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2893424 A1 20070518; FR 2893424 B1 20080125; AT E423687 T1 20090315; BR PI0618742 A2 20110913; CA 2629926 A1 20070524; DE 602006005395 D1 20090409; EP 1951528 A1 20080806; EP 1951528 B1 20090225; EP 1951528 B2 20150624; ES 2322874 T3 20090630; ES 2322874 T5 20150918; US 2009121473 A1 20090514; US 8439402 B2 20130514; WO 2007057613 A1 20070524
DOCDB simple family (application)
FR 0553480 A 20051116; AT 06831348 T 20061116; BR PI0618742 A 20061116; CA 2629926 A 20061116; DE 602006005395 T 20061116; EP 06831348 A 20061116; ES 06831348 T 20061116; FR 2006051186 W 20061116; US 8503306 A 20061116