Global Patent Index - EP 1240031 A1

EP 1240031 A1 2002-09-18 - 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

EP 1240031 A1 (EN)

Application

EP 00940019 A

Priority

  • AU 0000723 W
  • AU PQ128899 A

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 (main, further and additional classification)

B44F 1/12; B42D 15/10; G02B 5/18; G02B 27/42

IPC 8 full level (invention and additional information)

B42D 15/00 (2006.01); B42D 25/29 (2014.01); B42D 25/41 (2014.01); G02B 5/18 (2006.01); G02B 5/20 (2006.01); G03H 1/18 (2006.01); G07D 7/20 (2006.01)

CPC (invention and additional information)

B42D 25/41 (2014.10); B42D 25/29 (2014.10); G02B 5/203 (2013.01); B42D 25/328 (2013.01)

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

EPO simple patent family

WO 0102192 A1 20010111; AU PQ128899 A0 19990722; CA 2376463 A1 20010111; CN 1359340 A 20020717; EP 1240031 A1 20020918; JP 2003503759 A 20030128; NZ 516254 A 20020531; TW 567146 B 20031221

INPADOC legal status


2004-10-13 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040102

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020130

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO PAYMENT 20020130;SI