EP 1490840 B1 20070117 - DEVICE FOR CHECKING SECURITY ELEMENTS
Title (en)
DEVICE FOR CHECKING SECURITY ELEMENTS
Title (de)
VORRICHTUNG ZUR VERIFIKATION VON SICHERHEITSMERKMALEN
Title (fr)
DISPOSITIF DE VERIFICATION DE CARACTERISTIQUES DE SECURITE
Publication
Application
Priority
- CH 0300191 W 20030325
- CH 5712002 A 20020404
Abstract (en)
[origin: WO03085609A2] The invention relates to a device (20) and a method for making visible security elements present in an object (4) and comprising at least one photoluminescent segment which is characterised by linearly polarised photoluminescence and/or linearly polarised absorption. According to the invention, a good contrast is achieved with few interfering signals, by arranging at least one light source (1) and at least one polarisation filter (2) in such a way that the light (24) from the light source (1) is linearly polarised (23) by means of the polarisation filter (2) and hits the object (4) or the photoluminescent segments in said object, and photoluminescent light (25) from the segments can be observed through another and/or the same polarisation filter (2).
IPC 8 full level
CPC (source: EP US)
G07D 7/1205 (2017.04 - EP US); G07D 7/121 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03085609 A2 20031016; WO 03085609 A3 20040226; AT E352077 T1 20070215; AU 2003209915 A1 20031020; AU 2003209915 B2 20080717; AU 2003209915 B8 20080918; CA 2481118 A1 20031016; DE 50306308 D1 20070308; EP 1490840 A2 20041229; EP 1490840 B1 20070117; US 2005213078 A1 20050929
DOCDB simple family (application)
CH 0300191 W 20030325; AT 03745731 T 20030325; AU 2003209915 A 20030325; CA 2481118 A 20030325; DE 50306308 T 20030325; EP 03745731 A 20030325; US 50973504 A 20040930