Handsensor for authenticity identification of signets on documents
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 31, 2004
Grant Date -
Feb 13, 2003
app pub date -
Jul 3, 2001
filing date -
Jul 3, 2000
priority date (Note) -
Expired
status (Latency Note)
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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. The sensor is intended to be classified in laser class 3A.
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