Abstract: A manually controlled sensor for authenticity identification of luminescent identification features on documents is described, 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. In order to improve the sensitivity and to comply with the safety at work regulations, a focused beam (31, 32), which is emitted from a beam source (1), is converted by focusing optics (2, 3) in such a manner that a scanning bar (22), which is approximately in the form of a line, is projected on the surface of the object (5) to be investigated, which causes the identification region (21) which is arranged on the object (5) to fluoresce in a luminescent manner in at least one subregion, and the luminescence signal produced in this way is passed via detection optics (9, 9′, 10) to an evaluation unit (11), which evaluates the luminescence signal.
Type:
Application
Filed:
July 3, 2001
Publication date:
February 19, 2004
Applicant:
Bunderdruckerei GmbH of Oranienstrasse 91, D-10958
Inventors:
Benedikt Ahlers, Roland Gutmann, Arnim Franz-Burgholz, Anett Bailleu, Manfred Paeschke, Peter Halter, Hans Zerbel, Uwe Weber
Abstract: A manually controlled sensor for authenticity identification of luminescent identification features on documents is described, 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. In order to improve the sensitivity and to comply with the safety at work regulations, a focused beam (31, 32), which is emitted from a beam source (1), is converted by focusing optics (2, 3) in such a manner that a scanning bar (22), which is approximately in the form of a line, is projected on the surface of the object (5) to be investigated, which causes the identification region (21) which is arranged on the object (5) to fluoresce in a luminescent manner in at least one subregion, and the luminescence signal produced in this way is passed via detection optics (9, 9′, 10) to an evaluation unit (11), which evaluates the luminescence signal.
Type:
Application
Filed:
July 4, 2001
Publication date:
February 13, 2003
Applicant:
Bunderdruckerei GmbH of Oranienstrasse 91, D-10958
Inventors:
Benedikt Ahlers, Roland Gutmann, Arnim Franz-Burgholz, Anett Bailleu, Manfred Paeschke, Peter Halter, Hans Zerbel, Uwe Weber
Abstract: 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.
Type:
Application
Filed:
June 4, 2001
Publication date:
January 10, 2002
Applicant:
Bunderdruckerei GmbH
Inventors:
Benedikt Ahlers, Roland Gutmann, Arnim Franz-Burgholz, Anett Bailleu, Manfred Paeschke, Peter Halter