摘要:
In an apparatus for testing value documents, such as for example bank notes, an area of the bank note is captured from different directions with the help of two optical sensors aligned symmetrically to each other. The measured values supplied by the sensors on the one hand are added up in order to obtain a total measured value which is insensitive to asymmetric effects of the value document, and on the other hand the measured values are subtracted in order to capture exactly these asymmetric effects. In this way with the help of one single apparatus there can be tested authenticity features as well as the quality of the actual state of the value document.
摘要:
In an apparatus for testing value documents, such as for example bank notes, an area of the bank note is captured from different directions with the help of two optical sensors aligned symmetrically to each other. The measured values supplied by the sensors on the one hand are added up in order to obtain a total measured value which is insensitive to asymmetric effects of the value document, and on the other hand the measured values are subtracted in order to capture exactly these asymmetric effects. In this way with the help of one single apparatus there can be tested authenticity features as well as the quality of the actual state of the value document.
摘要:
The present invention relates to an apparatus (1) for examining documents (2), in particular banknotes. Therein the apparatus (1) comprises at least one light source (3), at least one spectral device (8) and at least two detection devices (9, 10, 11, 24). By means of the light source (3) the document (2) is irradiated and the light emitted and/or reflected and/or transmitted by the document (2) is subsequently divided into spectral components by means of the spectral device (8). The spectral components are separately detected by the detection devices. The spectral division of the light (4) emanating from the light source (3) can also be carried out before the light impinges on the document (2). The apparatus (1) is designed so as to individually weight the spectral components to be detected respectively by the detection devices (9, 10, 11, 24).
摘要:
The invention relates to an object of value with a security element, which has at least one liquid-crystalline material, the liquid-crystalline material effecting a linear polarization of light.
摘要:
The present invention relates to an illuminating device for linearly illuminating a flat object, in particular a bank note. The illuminating device according to the invention for linearly illuminating a flat object, in particular a bank note, with at least one or a plurality of linearly disposed light sources, a mirror arrangement serving as a reflector that extends in parallel to the linearly disposed light sources, with an optical axis perpendicular thereto, characterized in that the mirror arrangement consists of plane mirrors, that at least one first mirror has a structure, which images the light source to form at least one linear image in parallel to the mirror arrangement, and that at least one second mirror images the at least one linear image to form a linear illumination in parallel to the mirror arrangement on the optical axis or in the proximity of the optical axis.
摘要:
The invention relates to a sheet-shaped value document, such as a bank note. An authenticity feature which can be reliably verified by machine or by humans and which can moreover not be deceptively imitated by copying technology is realized by an electro-optical and/or acoustic display device integrated in the value document.
摘要:
A method for determining structural inhomogeneities in sheet material including exposing sheet material to ultrasonic waves, measuring ultrasonic waves transmitted through the sheet material and ultrasonic waves reflected from the sheet material at a plurality of predetermined portions located linearly along at least one track disposed on the sheet material and producing at least one value characteristic based on at least the transmitted or reflected ultrasonic waves from each of the predetermined portions on the at least one track. The method further includes forming a first mean based on the at least one value characteristic and a second mean based on the first mean to determine the structural inhomogeneities in the sheet material representative of the at least one track.
摘要:
A device for examining an object, preferably a document of value, by using optical radiation, having an optical waveguide which has an anisotropic retro-reflector section, which is formed along a surface curved in a plane of curvature and which reflects radiation components specularly in a first plane of incidence parallel to the plane of curvature but retro-reflects radiation components orthogonally with respect to the first plane of incidence, so that at least a proportion of the optical radiation falling in a glancing manner on the retro-reflector section is at least partly guided on the convex side of the surface by reflection on the retro-reflector section.
摘要:
An illuminating device for linearly illuminating a flat object, in particular a bank note, includes at least one or a plurality of linearly disposed light sources, a mirror arrangement serving as a reflector that extends in parallel to the linearly disposed light sources, with an optical axis perpendicular thereto. The mirror arrangement includes plane mirrors, with at least one first mirror having a structure, which images the light source to form at least one linear image in parallel to the mirror arrangement. At least one second mirror images the at least one linear image to form a linear illumination in parallel to the mirror arrangement on the optical axis or in the proximity of the optical axis.
摘要:
An apparatus for checking bank notes which scans the bank notes to be checked by means of a semiconductor array, including two linear semiconductor arrays formed of at least three layers which are sensitive to light of different wave-lengths, a first linear semiconductor array scanning the bank notes in a defined range of spectral sensitivity of the semiconductor (e.g. in the visible range), and a second linear semiconductor array scanning the bank notes in a range different therefrom (e.g. of invisible infrared light). From the signals of the two arrays a color image of the bank note and at least one image in the range of invisible light are obtained by suitable combination.