EP 1240031 A1 20020918 - SECURITY ARTICLE INCLUDING DIFFRACTIVE OPTIC FILTER
Title (en)
SECURITY ARTICLE INCLUDING DIFFRACTIVE OPTIC FILTER
Title (de)
EIN DIFFRECTIVES OPTISCHEN FILTER ENTHALTENDER SICHERHEITSARTIKEL
Title (fr)
ARTICLE DE SECURITE COMPORTANT UN FILTRE OPTIQUE DE DIFFRACTON
Publication
Application
Priority
- AU 0000723 W 20000626
- AU PQ128899 A 19990630
Abstract (en)
[origin: WO0102192A1] A security article such as banknotes, credit cards, passports, security passes, etc. comprising a transparent plastics substrate (2) bearing a diffractive optic filter (6) comprising at least a first zone (7) and second zone (8), with first and second diffractive structures or gratings formed in each zone. The first diffractive structure being operative to discriminatingly project a first selected colour at a first selected colour at a viewing angle by diffracting at least a first spectral component (e.g. red and green) of polychromatic light transmitted through said first zone by at least an angle theta from said viewing angle, said first colour forming at least part of a projected security image when said diffractive optic filter is viewed at said viewing angle.
IPC 1-7
IPC 8 full level
B42D 15/00 (2006.01); B42D 15/10 (2006.01); B42D 25/29 (2014.01); B42D 25/41 (2014.01); B44F 1/12 (2006.01); G02B 5/18 (2006.01); G02B 5/20 (2006.01); G03H 1/18 (2006.01); G07D 7/20 (2006.01)
CPC (source: EP KR)
B42D 25/29 (2014.10 - EP); B42D 25/30 (2014.10 - KR); B42D 25/328 (2014.10 - KR); B42D 25/41 (2014.10 - EP); G02B 5/203 (2013.01 - EP); B42D 25/328 (2014.10 - EP)
Citation (search report)
See references of WO 0102192A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0102192 A1 20010111; AU PQ128899 A0 19990722; CA 2376463 A1 20010111; CN 1359340 A 20020717; EP 1240031 A1 20020918; JP 2003503759 A 20030128; KR 20020022729 A 20020327; NZ 516254 A 20020531; TW 567146 B 20031221
DOCDB simple family (application)
AU 0000723 W 20000626; AU PQ128899 A 19990630; CA 2376463 A 20000626; CN 00809818 A 20000626; EP 00940019 A 20000626; JP 2001507657 A 20000626; KR 20017016742 A 20011227; NZ 51625400 A 20000626; TW 89112871 A 20000629