EP 2710564 A1 20140326 - 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 (2006.01); G07D 7/12 (2006.01); G07D 7/20 (2006.01)
CPC (source: EP US)
G07D 7/121 (2013.01 - EP US); G07D 7/164 (2013.01 - EP); G07D 7/202 (2017.04 - EP)
Citation (search report)
See references of WO 2012156274A1
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