Sensor for authenticity identification of signets on documents

Details Sensor for authenticity identification of signets on documents Sensor for authenticity identification of signets on documents

G - Physics

07

D

G07D 7/06 (2006.01) G06K 7/12 (2006.01)

Patent

CA 2349681

A sensor is proposed for authenticity identification of luminescent identification features on documents, in which the identification feature is illuminated with an excitation wavelength and may respond at a different wavelength, with the response wavelength being detected and evaluated by a radiation receiver. The focused beam emitted from a beam source is converted by focusing optics in such a manner that a scanning line, which is approximately in the form of a bar, is projected on the surface of the document to be investigated, which causes the signet, which is arranged on the document, to fluoresce at least in one subregion, and the fluorescence signal produced in this way is passed via detection objects to an evaluation unit, which evaluates the fluorescence signal.

L'invention concerne un détecteur d'authentification des attributs d'identification lumineuse de documents. L'attribut d'identification est illuminé au moyen d'une longueur d'onde d'excitation et peut réagir à une longueur d'onde différente. La longueur d'onde de réaction peut être détectée et évaluée par un récepteur de radiation. Le faisceau focalisé émis d'une source de faisceau est convertie en focalisant l'optique de telle sorte qu'une ligne de balayage, ayant la forme approximative d'une barre, soit projetée sur la surface du document à étudier, ce qui cause le signet, disposé sur le document, à devenir fluorescent dans au moins une sous-région. Le signal fluorescent ainsi produit est acheminé par des objets de détection vers une unité d'évaluation, qui évalue le signal fluorescent.

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