The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2010
Filed:
Oct. 02, 2003
Björn Graβl, Nürnberg, DE;
Radoslav Maksimovic, Erlangen, DE;
Georg Bauer, Nürnberg, DE;
Ralph Domnick, Buckenhof, DE;
Harald Walter, Birmensdorf, CH;
Björn Graβl, Nürnberg, DE;
Radoslav Maksimovic, Erlangen, DE;
Georg Bauer, Nürnberg, DE;
Ralph Domnick, Buckenhof, DE;
Harald Walter, Birmensdorf, CH;
Secutech International Pte. Ltd., Singapore, SG;
Abstract
The invention relates to a device for checking the authenticity of an anti-forgery marking with colors which change depending on the angle of observation, comprising a) several first light sources, emitting in a given spectral range, whereby the light sources are different from each other with regard to the wavelength of the emission maximum thereof and the first light sources () are housed in a housing () such as to irradiate the surface (O), with the housing () placed thereon, at a given first angle (α), b) a first means () for measuring the intensity of the light reflected from the surface (O) arranged at a second angle (α) and c) a means () for the automatic comparison of measured intensities with the reference intensities stored for at least one given color for each light source ().