G - Physics – 07 – D
Patent
G - Physics
07
D
G07D 7/00 (2006.01) G06K 7/12 (2006.01) G06K 19/06 (2006.01) G07D 7/12 (2006.01)
Patent
CA 2482197
The invention relates to a device (20) for making security elements visible, which are provided in an object (8) and have at least one photoluminescent segment that is characterized by having a linearly polarized absorption. The aim of the invention is to obtain a device of this type that has a particularly simple and compact design. To this end, at least one UV light source, which is provided in the form of a UV diode (18), and at least one polarization filter (4) are arranged so that the light of the light source (18) is linearly polarized (12) by the polarization filter (4) and, in a dark space (17), strikes the object (8) with respect to the photoluminescent segments provided therein, and photoluminescent light (16) in the visible range emitted by the segment can be observed through an observation opening (10).
L'invention concerne un dispositif (20) destiné à rendre visible des éléments de sécurité présents dans un objet (8), présentant au moins un segment photoluminescent caractérisé par une absorption polarisée linéairement. L'invention vise à mettre en oeuvre un tel dispositif de construction particulièrement simple et compacte. A cet effet, ledit dispositif comporte au moins une source de lumière UV se présentant sous la forme d'une diode UV (18), et au moins un filtre de polarisation (4) disposés de manière que la lumière de la source de lumière (18) est polarisée linéairement (12) par le filtre de polarisation (4), que la lumière frappe l'objet (8) dans une chambre noire (17), ou respectivement les segments photoluminescents contenus dans ledit objet, et que de la lumière (16) émise par le segment dans le domaine visible peut être observée au travers d'un orifice d'observation (10).
Dostmann Andreas
Franken Klaus
Grob Jakob
Cassan Maclean
Landqart
LandOfFree
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