Patent ID: 6784441
Filing Date: 2004-08-31
Classification: G07D

Abstract:
A sensor for authenticity identification of a luminescent identification feature on a document comprising:a beam source and a focusing optics for illuminating the identification feature with a focused beam at a wavelength in the form of an excitation wavelength to optically excite at least a subregion of the identification feature and wherein the identification feature may respond in an optical response signal at a same or different wavelength in the form of a response wavelength, a radiation receiver for detecting and evaluating the response wavelength, wherein the focused beam is emitted from the beam source and is converted by focusing optics in such a manner that a scanning bar approximately in the form of a line is projected on the surface of the document and having a detection optics and an evaluation unit, wherein the optical response signal is passed via detection optics to the evaluation unit which evaluates the optical response signal, and wherein the sensor is a manually controlled sensor, the beam source is formed as a laser, and the focusing optics has a lineoptics comprising a cylindrical lens, wherein the focused beam is a laser focused beam, which is produced by the laser passed through the lineoptics and is imaged differently in the X-direction and Y-direction on the document.