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.

Abstract: The present invention relates to a security document and/or value document, in particular banknote, with security features and with a verification element for verifying the security feature.

Abstract: The invention relates to a device for validating authenticity features on documents of value and security documents, especially bank notes, personal documents, plastic cards and similar. The device consists of an automatic testing apparatus into which the bank notes for testing are fed and hereby run through a detector device. The detector device is suitable for detecting and evaluating the electroluminescent properties of the authenticity features.

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.

Abstract: A security document with optically excitable dyes for authenticity checking. Dyes are applied to or embedded in the security documents. The dyes are advantageously embedded in a carrier material which in conjunction with the dyes forms a laser-active element. Certain optically excitable dyes are incorporated in a security document in such a way that when the security and/or sensitive document is optically excited, the dyes embedded in the security and/or sensitive document resonate with the material of the securities and secure documents, so that a well-defined narrow spectrum of all excited materials is emitted.

Abstract: The invention relates to new films for applying to a substrate and to methods for producing them.A composition, for use in preparing a film, (preferably an epitactic film) comprising a solid solution of KNbO.sub.3 and KTaO.sub.3 forming a product of formula IK.sub.1-y M.sub.y Ta.sub.1-x Nb.sub.x O.sub.3 (I)in which M is a monovalent metal ion other than K.sup.+ (hereinafter defined as the dopant);y=0.02 to 0.20 andx=0.05 to 0.95.