EP 2710564 B1 20210224 - METHOD AND APPARATUS FOR VERIFYING SECURITY DOCUMENTS USING WHITE LIGHT INTERFEROMETRY
Title (en)
METHOD AND APPARATUS FOR VERIFYING SECURITY DOCUMENTS USING WHITE LIGHT INTERFEROMETRY
Title (de)
VERFAHREN UND VORRICHTUNG ZUR VERIFIKATION VON SICHERHEITSDOKUMENTEN MIT HILFE VON WEISSLICHTINTERFEROMETRIE
Title (fr)
PROCÉDÉ ET DISPOSITIF DE VÉRIFICATION DE DOCUMENTS DE SÉCURITÉ À L'AIDE D'UNE INTERFÉROMÉTRIE À LUMIÈRE BLANCHE
Publication
Application
Priority
- DE 102011075943 A 20110516
- EP 2012058646 W 20120510
Abstract (en)
[origin: WO2012156274A1] The invention relates to a verification apparatus and a verification method. The verification method comprises the following steps: the security document (13) is oriented relative to a white light interferometer (2), an examination by means of white light interferometry is performed in at least one location (P1 -P3) on a surface to be examined (15), wherein a depth profile is produced in a direction of examination (19-1 to 19-3), a feature is derived from the depth profile, and the at least one derived feature is compared with one or more specifications in order to derive a verification decision.
IPC 8 full level
G07D 7/16 (2016.01); G07D 7/12 (2016.01); G07D 7/20 (2016.01)
CPC (source: EP US)
G07D 7/121 (2013.01 - EP US); G07D 7/164 (2013.01 - EP); G07D 7/202 (2017.04 - EP)
Citation (examination)
- US 6584214 B1 20030624 - PAPPU RAVIKANTH [US], et al
- US 2011043821 A1 20110224 - STEWART ROBERT LAIRD [GB]
- SHOUDE CHANG ET AL: "Full-field optical coherence tomography used for security and document identity", DESIGN FOR MANUFACTURABILITY THROUGH DESIGN-PROCESS INTEGRATION III, vol. 6402, 27 September 2006 (2006-09-27), pages 64020Q, XP055566781, ISSN: 0277-786X, DOI: 10.1117/12.692733
- STIFTER D: "Beyond biomedicine: a review of alternative applications and developments for optical coherence tomography", APPLIED PHYSICS B ; LASERS AND OPTICS, SPRINGER, BERLIN, DE, vol. 88, no. 3, 10 August 2007 (2007-08-10), pages 337 - 357, XP019540594, ISSN: 1432-0649, DOI: 10.1007/S00340-007-2743-2
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)
WO 2012156274 A1 20121122; CN 103534735 A 20140122; CN 103534735 B 20170503; DE 102011075943 A1 20121122; EP 2710564 A1 20140326; EP 2710564 B1 20210224
DOCDB simple family (application)
EP 2012058646 W 20120510; CN 201280023559 A 20120510; DE 102011075943 A 20110516; EP 12720181 A 20120510