EP1265198B1 - Dispositif et méthode pour analyser des documents - Google Patents

Dispositif et méthode pour analyser des documents Download PDF

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Publication number
EP1265198B1
EP1265198B1 EP02008257.4A EP02008257A EP1265198B1 EP 1265198 B1 EP1265198 B1 EP 1265198B1 EP 02008257 A EP02008257 A EP 02008257A EP 1265198 B1 EP1265198 B1 EP 1265198B1
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EP
European Patent Office
Prior art keywords
detector
luminescence light
light
document
wavelength
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EP02008257.4A
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German (de)
English (en)
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EP1265198A2 (fr
EP1265198A3 (fr
Inventor
Thomas Dr. Giering
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Giesecke and Devrient Currency Technology GmbH
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Giesecke and Devrient Currency Technology GmbH
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Publication of EP1265198A3 publication Critical patent/EP1265198A3/fr
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties

Definitions

  • the invention relates to a device for examining documents, in particular value, identity or security documents, with at least one excitation device for excitation of luminescent light in or on a document to be examined and at least two detector units for detecting at least a portion of the emitted from the document luminescence.
  • the invention also relates to a corresponding method.
  • identity, security or value documents such as Banknotes
  • suitable security inks containing luminescent substances are substances which are e.g. be excited by light, electric fields, radiation or sound to emit light.
  • the documents to be checked are usually irradiated with light of a specific spectral range and the luminescent light emitted by the luminescent substances of the document is detected. Based on the intensity and / or spectral characteristics of the emitted luminescent light can then be determined whether the document is genuine or fake.
  • the reliability of statements about the authenticity of the tested documents is particularly dependent on the accuracy with which the spectral characteristic, ie the color of the luminescence is analyzed.
  • Such an analysis can be done for example by spectrometers, which, however, require a relatively high technical complexity and high production costs.
  • a simpler solution therefore represent individual detector units, such as photodiodes or photomultipliers, with different spectral sensitivity. Depending on the spectral characteristics of the luminescence, the detector units provide different Detector signals, which can then be used for the spectral analysis of the luminescence.
  • a detector is known in which the detection beam path is guided by means of beam splitters on three detectors with different spectral sensitivity, which is achieved by different color filters.
  • devices of this type have the disadvantage that the luminescence light respectively detected by the individual detector units generally does not originate from exactly the same spatial subarea of the document due to parallax errors. This makes it impossible to reliably assess the color properties of the luminescent light emanating from a subregion of the document. This is disadvantageous in particular if partial regions with small dimensions are to be examined for their luminescence properties, since even slight parallax errors can lead to particularly great inaccuracies in the spectral analysis of the luminescent light.
  • a photodetector in which various detector units are integrated on the same substrate and arranged one behind the other, the spectral sensitivity of which is based on different levels of penetration of the light as a function of its wavelength.
  • the disadvantage here is that the position of the pn junctions must be selected at a certain depth in the substrate and that one is spectrally limited to the sensitivity range of a single semiconductor material (silicon).
  • WO01 / 61654 A2 a device for the examination of value documents known in which two photodiodes with different Absorbent edge can be used to detect remission or transmission light of a value document. These photodiodes of different absorption edge are arranged one behind the other but not integrated on the same component.
  • the invention is based on the idea that the detector units are arranged one behind another with respect to the direction of the luminescent light emitted by the document and striking the detector units. As a result, the luminescence light strikes one after the other on the successively arranged detector units and is thereby detected by them.
  • the inventive arrangement of the detector units ensures that all detector units arranged directly behind one another can detect the luminescence light emitted by a common spatial subarea of the document. Any parallax errors that would occur in a laterally staggered arrangement of detector units are greatly reduced by the inventive arrangement of the detector units in a row. Statements about the luminescence properties of the document can then be derived with high reliability from the spectral components of the luminescence light detected by the individual detector units.
  • At least one first detector unit is permeable to that spectral subregion of the luminescence light which is to be detected by at least one second detector unit arranged behind the first detector unit.
  • a first spectral subregion of the luminescent light is then detected by the first detector unit, while a second spectral subregion of the luminescence light can pass through the first detector unit and is detected by the second detector unit arranged behind it.
  • the first detector unit acts as an optical filter in front of the second detector unit located behind it. For certain applications, therefore, it is usually possible to dispense with additional optical filters.
  • the detector units are preferably photodiodes, which are arranged one above the other in layers and in this case form a so-called sandwich diode. As a result, a very compact arrangement of the detector units is achieved.
  • the detector units may also be elements which emit light by means of other physical detection principles, e.g. can detect by means of avalanche effect.
  • the individual detector units are integrated on a common component, in particular a semiconductor component, which comprises at least two photosensitive layers, in particular pn junctions, wherein each layer, in particular each pn junction, each corresponds to a detector unit. Due to the small distance between the detector units, a particularly strong reduction of parallax errors is achieved in this embodiment.
  • the photodiodes or pn junctions preferably have different absorption edges, wherein the absorption edge of at least one first photodiode or of a first pn junction lies at smaller wavelengths than the absorption edge of at least one second photodiode arranged behind the first photodiode or one behind the first pn junction. Transition arranged second pn junction.
  • a particularly simple and reliable derivation of statements about the spectral properties of the detected luminescence light from the detector signals generated by the individual detector units can be carried out on the basis of a division of two detector signals and / or the difference of two logarithmic detector signals.
  • Fig. 1 shows a preferred construction of the device according to the invention.
  • a document to be examined in the example shown a banknote 10, is transported past the sensor system 7 by means of a transport device indicated by transport rollers 40 and transport belts 41.
  • the banknote 10 is irradiated with the excitation light 15 of the light sources 12.
  • the light sources 12 are, for example, fluorescent tubes, incandescent lamps, lasers or LEDs which in each case emit light which is suitable for exciting luminescent light in or on the banknote 10.
  • the excitation light 15 is ultraviolet (UV) light.
  • UV ultraviolet
  • filters can be arranged in front of the light sources 12.
  • the excitation of luminescent light 16 in or on the document is effected by the light 15 of the light sources 12.
  • a corresponding luminescence phenomenon is therefore referred to as photoluminescence.
  • other types of luminescence phenomena such as electromagnetic or electric fields, radiation or sound, may also be used.
  • Electro-, radio- or sonoluminescence are excited in or on the document.
  • the excitation is effected by appropriate excitation means, e.g. electrical contacts or field plates, radiation sources for cathode, ion or X-rays, ultrasound sources or antennas.
  • the excitation light 15 emitted by the respective light sources 12 lies at different wavelengths or wavelength ranges.
  • the luminescent light 16 excited at different wavelengths or wavelength ranges permits even more precise statements about the luminescence properties of the banknote 10.
  • the FIG. 1 initially illuminated with only one light source 12, then detect the two detector units 1 and 2, a first intensity value pair. Upon subsequent illumination with the other light source 12, a second intensity value pair is generated. With simultaneous illumination with both light sources 12, a third intensity value pair is finally obtained.
  • a particularly accurate investigation of the luminescence properties of the banknote 10 under investigation is achieved.
  • the device or the method according to the invention is equally suitable for the examination of phosphorescence and fluorescent light.
  • the luminescent light 16 excited in or on the banknote 10 is emitted by the banknote 10 and impinges on two detector units 1 and 2, which according to the invention are arranged one behind the other in such a way that the luminescent light 16 emanating from the banknote 10 is successively applied to the individual detector units 1 and 2, respectively meets and can be detected by them.
  • the two detector units 1 and 2 each have different spectral sensitivities, so that in each case a different spectral component of the luminescent light 16 is detected. Accordingly, the detector signals S generated by the detector units 1 and 2 differ, which are supplied to an evaluation device 9 for evaluation and analysis.
  • an optical device 13 which directs the luminescent light 16 emitted by the banknote 10 onto the detector units 1 and 2, in particular focused.
  • This is preferably an imaging optic which images a subarea 11 of the banknote 10 onto the detector units 1 and 2.
  • Self-focusing lenses so-called Selfoc lenses, are preferably used for this purpose.
  • Self-focusing lenses are cylindrical optical elements made of a material which has a refractive index decreasing from the optical axis of the cylinder towards its cladding.
  • a filter 14 is arranged in this example, which filter is permeable to those spectral subregions of the luminescent light 16 which are to be detected by the detection units 1 and 2.
  • a first embodiment of the inventively arranged detector units is shown.
  • the individual detector units are formed as photodiodes 1 and 2, respectively, and arranged one behind the other with respect to the direction of the luminescent light 16 emitted by the document.
  • the individual photodiodes 1 and 2 each have a pn junction 3/4 or 5/6 between in each case a p-doped 3 or 5 and an n-doped 4 or 6 semiconductor layer.
  • the doping profile is here shown greatly simplified and generally does not reflect the actual size ratios of the layer thicknesses.
  • Spacers 8 are provided between the photodiodes 1 and 2 in order to avoid electrical short circuits.
  • the height of the spacers 8 should not be too large and be about the same order of magnitude as the height of the photodiodes 1 and 2.
  • a filter 14 may be arranged in front of the photodiode 1.
  • FIG. 3a shows a device 20 on which the detector units 1 and 2 are integrated together, wherein the device 20 has two PN junctions 22/21 and 23/21, respectively, which correspond to a detector unit 1 and 2 respectively.
  • the n-doped semiconductor layer 21 forms the substrate on which the two pn junctions 22/21 and 23/21 are applied in layers.
  • the doping profile is here also shown greatly simplified and generally does not reflect the actual size ratios of the layer thicknesses.
  • voltages are tapped with suitable terminals 17 and forwarded as detector signals S to an evaluation unit (not shown).
  • FIG. 3b shows a variant of the second embodiment of the inventive arrangement.
  • the illustrated device 30 comprises two layered pn junctions 32/33 and 34/33, which are applied to a common substrate 31.
  • the substrate 31 itself may be a semiconductor or ceramic substrate.
  • the explanations apply to FIG. 3a analogous.
  • Detector units 1 and 2 shown are selected so that the first detector unit 1 is permeable to that spectral portion of the luminescent light 16, which is to be detected with the disposed behind the first detector unit 1 second detector unit 2.
  • the detector units 1 and 2 designed in particular as photodiodes or pn junctions in this case have different absorption edges, wherein the absorption edge of the first photodiode 1 or the first pn junction 3/4, 32/33 and 22/21 at smaller wavelengths lies as the second absorption edge of the arranged behind the first photodiode 1 and the first pn junction 3 / 4,32 / 33 and 22/21 second photodiode 2 and the second pn junction 5/6, 34/33 and 23rd / 21st
  • the respective pn junctions 3/4 or 5/6 are preferably realized on different semiconductor materials.
  • a photodiode based on silicon (Si) is used for the first detector unit 1 and a photodiode based on germanium (Ge) is used for the second detector unit 2.
  • Si silicon
  • Ge germanium
  • Wavelengths below about one micrometer can then be detected by the silicon-based photodiode 1, while wavelengths above about one micrometer can pass through this photodiode 1 and be detected by the germanium-based photodiode 2 located behind it.
  • photodiodes based on silicon and indium gallium arsenide (InGaAs) or silicon and lead sulfide (PbS) can be combined to detect the luminescent light 16 in two different spectral subregions.
  • InGaAs indium gallium arsenide
  • PbS lead sulfide
  • the combination of several corresponding photodiodes is possible, for.
  • silicon indium gallium arsenide and lead sulfide.
  • the different permeability or sensitivity of the detector units 1 and 2 is achieved by the selection of suitable semiconductor materials and / or a corresponding doping of the respective material.
  • a corresponding component 20 or 30 can be realized for example on the basis of silicon, wherein the first pn junction 22/21 or 32/33 by a lower penetration depth for short-wave Light is particularly sensitive.
  • long-wave light can penetrate deeper into the layer system and be detected by the second pn junction 23/21 or 34/33, which is more sensitive in the long-wave spectral range.
  • FIG. 4 shows an example of different spectral sensitivities E in the FIGS. 2 and 3
  • the spectral sensitivity E1 of the first detector unit 1 is greatest in the region of short wavelengths ⁇
  • the spectral sensitivity E2 of the second detector unit 2 arranged behind the first detector unit 1 at longer wavelengths ⁇ reached its maximum.
  • the respective spectral transmittances of the detector units 1 and 2 are complementary thereto.
  • the spectral transmittance of the detector unit 1 is therefore greatest at higher wavelengths ⁇ , so that the luminescent light can penetrate the detector unit 1 in this subregion of the spectrum and finally from the detector unit 2 can be detected.
  • FIG. 5 shows a circuit diagram in the FIGS. 3a or 3b illustrated second embodiments.
  • the detector units 1 and 2, ie the corresponding pn junctions 22/21 and 23/21 and 32/33 and 34/33, of the device 20 and 30 are shown as oppositely connected in series photodiodes whose cathodes at a common potential 18 lie.
  • the signals S1 and S2 are fed to an evaluation device 9 via the anode outputs 19 of the photodiodes.
  • the signals S1 and S2 are logarithmically amplified in each case in a logarithmic amplifier 28 and then applied to a differential amplifier 29.
  • the output voltage Ua of the differential amplifier 29 is proportional to the logarithm of the quotient of the two detector signals S2 / S1 and thus independent of the absolute intensity of the luminescence light 16. Statements can then be made from the output voltage Ua via the spectral properties, in particular the color, of the detected luminescent light 16 are derived with particularly high reliability.
  • the spectral properties of the luminescent light 16, in particular the wavelength, e.g. the central wavelength, and / or the wavelength range and / or the color, according to the invention not only in the visible spectral range, but also in invisible spectral ranges, such. in the infrared or ultraviolet, can be detected and analyzed.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Claims (21)

  1. Dispositif d'examen de documents, en particulier de documents de valeur, d'identification ou de sécurité, comprenant :
    - au moins un équipement d'excitation pour l'excitation de lumière luminescente (16) dans ou sur un document (10) à examiner, et
    - au moins deux unités de détecteur (1, 2) réalisées sous forme de photodiodes pour la saisie d'au moins une partie de la lumière luminescente (16) émise par le document (10), cependant que les unités de détecteur (1, 2) sont, relativement à la lumière luminescente (16) émise par le document (10), agencées en succession,
    caractérisé
    - en ce que les photodiodes présentent différents bords d'absorption et sont intégrées sur un composant (20, 30) commun, cependant que le composant (20, 30) comprend au moins deux transitions p-n (22/21, 23/21, 32/33, 34/33), cependant que, à chaque transition p-n (22/21, 23/21, 32/33, 34/33), respectivement une unité de détecteur (1, 2) correspond, et
    - en ce que, pour la première unité de détecteur une photodiode à base de silicium, et pour la deuxième unité de détecteur une photodiode à base de germanium est employée, ou que des photodiodes à base de silicium et d'arséniure d'indium-gallium (InGaAs) ou de silicium et de sulfure de plomb (PbS) sont combinées pour détecter la lumière luminescente dans deux plages spectrales partielles différentes.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'équipement d'excitation comprend au moins une source de lumière (12) pour l'éclairage du document (10) avec de la lumière d'excitation (15), laquelle est appropriée à l'excitation de lumière luminescente (16) dans ou sur le document (10).
  3. Dispositif selon une des revendications de 1 à 2, caractérisé en ce que les unités de détecteur (1, 2) présentent différentes sensibilités spectrales (E1, E2).
  4. Dispositif selon une des revendications de 1 à 3, caractérisé en ce qu'au moins une première unité de détecteur (1) est perméable pour au moins une plage spectrale partielle, de la lumière luminescente (16), pouvant être saisie avec au moins une deuxième unité de détecteur (2) agencée derrière la première unité de détecteur (1).
  5. Dispositif selon une des revendications de 1 à 4, caractérisé en ce que, au moins entre deux photodiodes, au moins un filtre optique est agencé.
  6. Dispositif selon une des revendications de 1 à 5, caractérisé en ce que les transitions p-n (22/21, 23/21, 32/33, 34/33) sont réalisées sous forme de couches et sont appliquées sur un substrat (21, 31) commun, en particulier sur un substrat semi-conducteur ou céramique.
  7. Dispositif selon la revendication 6, caractérisé en ce que les transitions p-n (22/21, 23/21, 32/33, 34/33) sont, relativement à la lumière luminescente (16) émise par le document (10),
    agencées en couches superposées.
  8. Dispositif selon une des revendications de 1 à 7, caractérisé en ce que le premier bord d'absorption d'au moins une première photodiode ou d'au moins une première transition p-n (22/21, 32/33) se situe à des longueurs d'onde (λ) plus faibles que le deuxième bord d'absorption d'une deuxième photodiode agencée derrière la première photodiode ou d'au moins une deuxième transition p-n (23/21, 34/33) agencée derrière la première transition p-n (22/21, 32/33).
  9. Dispositif selon une des revendications de 1 à 8, caractérisé en ce qu'un équipement optique (13) est prévu pour diriger sur les unités de détecteur (1, 2) la lumière luminescente (16) émanant du document (10).
  10. Dispositif selon la revendication 9, caractérisé en ce que l'équipement optique (13) comprend au moins une lentille, en particulier une lentille autofocalisante, pour la focalisation, sur les unités de détecteur (1, 2), de la lumière luminescente (16) émanant du document (10).
  11. Dispositif selon une des revendications de 1 à 10, caractérisé en ce qu'un équipement d'évaluation (9) est prévu pour la déduction d'indications sur les propriétés spectrales, en particulier sur la longueur d'onde, comme p.ex. la longueur d'onde centrale, et/ou sur la plage de longueurs d'onde et/ou la couleur, de la lumière luminescente (16) saisie, à partir de signaux de détecteur (S, S1, S2) générés par les unités de détecteur (1, 2).
  12. Dispositif selon la revendication 11, caractérisé en ce que l'équipement d'évaluation (9) comprend un amplificateur logarithmique (28) pour un calcul de logarithme de certains signaux de détecteur (S, S1, S2).
  13. Dispositif selon une des revendications de 11 à 12, caractérisé en ce que l'équipement d'évaluation (9) comprend un amplificateur différentiel (29) pour la constitution de la différence entre deux signaux de détecteur (S, S1, S2) ou entre signaux de détecteur (S, S1, S2) transformés en logarithmes.
  14. Dispositif selon une des revendications de 11 à 13, caractérisé en ce que l'équipement d'évaluation (9) est conçu pour la déduction d'indications sur les propriétés spectrales, en particulier sur la longueur d'onde, comme p.ex. la longueur d'onde centrale, et/ou sur la plage de longueurs d'onde et/ou la couleur, de la lumière luminescente (16) saisie, sur la base
    - de la division de deux signaux de détecteur (S, S1, S2) et/ou
    - de la différence de deux signaux de détecteur (S, S1, S2) transformés en logarithmes.
  15. Dispositif selon la revendication 2, caractérisé en ce qu'au moins deux sources de lumière (12) sont prévues, cependant que la lumière d'excitation (15) de la source respective de lumière (12) se situe à différentes longueurs d'onde ou dans différentes plages de longueurs d'onde.
  16. Procédé d'examen de documents, en particulier de documents de valeur, d'identification ou de sécurité, dans lequel
    - un document (10) à examiner est excité de manière à émettre de la lumière luminescente (16), et
    - au moins une partie de la lumière luminescente (16) émise par le document (10) est saisie par au moins deux unités de détecteur (1, 2) qui sont réalisées sous forme de photodiodes, sont, relativement à la lumière luminescente (16) émise par le document (10), agencées en succession, et présentent différents bords d'absorption et sont intégrées sur un composant (20, 30) commun, cependant que le composant (20, 30) comprend au moins deux transitions p-n (22/21, 3/21, 32/33, 34/33), cependant que, à chaque transition p-n (22/21, 23/21, 32/33, 34/33), respectivement une unité de détecteur (1, 2) correspond, cependant que, pour la première unité de détecteur une photodiode à base de silicium, et pour la deuxième unité de détecteur une photodiode base de germanium est employée, ou que des photodiodes à base de silicium et d'arséniure d'indium-gallium (InGaAs) ou de silicium et de sulfure de plomb (PbS) sont combinées pour détecter la lumière luminescente dans deux plages spectrales partielles différentes, cependant que la lumière luminescente (16) rencontre l'une après l'autre les unités de détecteur (1, 2) agencées en succession et est alors saisie par ces dernières, et
    cependant que les unités de détecteur (1, 2) génèrent des signaux de détecteur (S, S1, S2) et que, à partir des signaux de détecteur (S, S1, S2), des indications sur les propriétés spectrales de la lumière luminescente (16) saisie sont déduites.
  17. Procédé selon la revendication 16, caractérisé en ce que le document (10) est éclairé avec de la lumière d'excitation (15), laquelle est appropriée à l'excitation de lumière luminescente (16) dans ou sur le document (10).
  18. Procédé selon une des revendications de 16 à 17, caractérisé en ce que la lumière luminescente (16) est saisie par des unités de détecteur (1, 2) ayant différentes sensibilités spectrales (E1, E2).
  19. Procédé selon une des revendications de 16 à 18, caractérisé en ce qu'au moins une plage spectrale partielle de la lumière luminescente (16) passe par au moins une première unité de détecteur (1) et est saisie par au moins une deuxième unité de détecteur (2) agencée derrière la première unité de détecteur (1).
  20. Procédé selon une des revendications de 16 à 19, caractérisé en ce que, à partir des signaux de détecteur (S, S1, S2), des indications sur les longueurs d'onde, comme p.ex. la longueur d'onde centrale, et/ou sur la plage de longueurs d'onde et/ou la couleur de la lumière luminescente (16) saisie, sont déduites.
  21. Procédé selon la revendication 20, caractérisé en ce que la déduction d'indications sur les propriétés spectrales, en particulier sur la longueur d'onde, comme p.ex. la longueur d'onde centrale, et/ou sur la plage de longueurs d'onde et/ou la couleur, de la lumière luminescente (16) saisie, a lieu sur la base
    - de la division de deux signaux de détecteur (S, S1, S2), et/ou
    - de la différence de deux signaux de détecteur (S, S1, S2) transformés en logarithmes.
EP02008257.4A 2001-06-08 2002-04-19 Dispositif et méthode pour analyser des documents Expired - Lifetime EP1265198B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10127837A DE10127837A1 (de) 2001-06-08 2001-06-08 Vorrichtung und Verfahren zur Untersuchung von Dokumenten
DE10127837 2001-06-08

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EP1265198A2 EP1265198A2 (fr) 2002-12-11
EP1265198A3 EP1265198A3 (fr) 2005-01-12
EP1265198B1 true EP1265198B1 (fr) 2019-10-30

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DE (1) DE10127837A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE10323410A1 (de) * 2003-05-23 2004-12-09 Giesecke & Devrient Gmbh Vorrichtung zur Prüfung von Banknoten
DE102004035494A1 (de) 2004-07-22 2006-02-09 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Prüfung von Wertdokumenten
AU2012203003B2 (en) * 2004-07-22 2013-04-11 Giesecke+Devrient Currency Technology Gmbh Device and method for verifying value documents
DE102004039049A1 (de) * 2004-08-11 2006-02-23 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zum Messen von Blattgut
US8263948B2 (en) * 2009-11-23 2012-09-11 Honeywell International Inc. Authentication apparatus for moving value documents
EP2517064A2 (fr) * 2009-12-22 2012-10-31 Miao Zhang Procédés et systèmes d'éclairage pour optimiser la résolution d'image de systèmes imageurs
DE102010047061A1 (de) * 2010-09-30 2012-04-05 Carl Zeiss Microlmaging Gmbh Optisches Weitbereichsspektrometer
EP2718910B1 (fr) * 2011-06-06 2015-11-18 Sicpa Holding Sa Dispositif de balayage de temps d'affaiblissement en ligne
DE102011106523A1 (de) * 2011-07-04 2013-01-10 Giesecke & Devrient Gmbh Prüfgerät und Verfahren zur Kalibrierung eines Prüfgeräts
US10452908B1 (en) 2016-12-23 2019-10-22 Wells Fargo Bank, N.A. Document fraud detection
WO2018181134A1 (fr) 2017-03-27 2018-10-04 グローリー株式会社 Capteur optique, dispositif de détection de lumière, dispositif de traitement de feuille de papier, procédé de détection de lumière et dispositif de détection de phosphorescence
DE102018109141A1 (de) * 2018-04-17 2019-10-17 Bundesdruckerei Gmbh Smartphone verifizierbares, leuchtstoffbasiertes Sicherheitsmerkmal und Anordnung zur VerifizierungSmartphone verifizierbares, leuchtstoffbasiertes Sicherheitsmerkmal und Anordnung zur Verifizierung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109989A (ja) * 1981-12-24 1983-06-30 株式会社東芝 印刷物の判別装置
US4677289A (en) * 1984-11-12 1987-06-30 Kabushiki Kaisha Toshiba Color sensor
US6865000B2 (en) * 1994-12-06 2005-03-08 Canon Kabushiki Kaisha Image reading apparatus for grouping sensors according to characteristics
GB9717194D0 (en) * 1997-08-13 1997-10-22 De La Rue Thomas & Co Ltd Detector methods and apparatus
US5965875A (en) * 1998-04-24 1999-10-12 Foveon, Inc. Color separation in an active pixel cell imaging array using a triple-well structure
EP1228537A1 (fr) * 1999-06-14 2002-08-07 AUGUSTO, Carlos Jorge Ramiro Proenca Composant optoelectronique presentant un empilement de couches et une caracteristique de selection de longueurs d'ondes
DE10007887A1 (de) * 2000-02-21 2001-08-23 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zur Echtheitsprüfung von bedruckten Objekten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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US6777704B2 (en) 2004-08-17
EP1265198A2 (fr) 2002-12-11
US20020185615A1 (en) 2002-12-12
EP1265198A3 (fr) 2005-01-12
DE10127837A1 (de) 2003-01-23

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