EP2573739B1 - Dispositif et procédé d'authentification d'entités optiquement variables - Google Patents

Dispositif et procédé d'authentification d'entités optiquement variables Download PDF

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Publication number
EP2573739B1
EP2573739B1 EP20110182728 EP11182728A EP2573739B1 EP 2573739 B1 EP2573739 B1 EP 2573739B1 EP 20110182728 EP20110182728 EP 20110182728 EP 11182728 A EP11182728 A EP 11182728A EP 2573739 B1 EP2573739 B1 EP 2573739B1
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EP
European Patent Office
Prior art keywords
plate
light
optically variable
variable entity
view
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20110182728
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German (de)
English (en)
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EP2573739A1 (fr
Inventor
Dr. Edgar Müller
Claude-Alain Despland
Pierre Degott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICPA Holding SA
Original Assignee
SICPA Holding SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ES11182728.3T priority Critical patent/ES2542002T3/es
Application filed by SICPA Holding SA filed Critical SICPA Holding SA
Priority to EP20110182728 priority patent/EP2573739B1/fr
Priority to TW101135276A priority patent/TW201314196A/zh
Priority to RU2014116904/08A priority patent/RU2014116904A/ru
Priority to SG11201400550RA priority patent/SG11201400550RA/en
Priority to KR1020147011011A priority patent/KR20140081838A/ko
Priority to US14/347,141 priority patent/US9228901B2/en
Priority to JP2014531131A priority patent/JP2014532169A/ja
Priority to PCT/EP2012/004034 priority patent/WO2013045082A1/fr
Priority to AU2012314907A priority patent/AU2012314907B2/en
Priority to CN201280046779.XA priority patent/CN103827928B/zh
Priority to BR112014006580-2A priority patent/BR112014006580B1/pt
Priority to ARP120103563A priority patent/AR088054A1/es
Priority to CA2848923A priority patent/CA2848923C/fr
Priority to MX2014003456A priority patent/MX2014003456A/es
Publication of EP2573739A1 publication Critical patent/EP2573739A1/fr
Priority to MA36822A priority patent/MA35436B1/fr
Priority to HK14111865.3A priority patent/HK1198376A1/xx
Application granted granted Critical
Publication of EP2573739B1 publication Critical patent/EP2573739B1/fr
Active legal-status Critical Current
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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
    • G07D7/128—Viewing devices
    • 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
    • G07D7/003—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 security elements

Definitions

  • the present invention is related to the field of security document authentication.
  • it is directed to a simple device and a method for authenticating an optically variable entity, which exhibits a color shift if the viewing-angle changes.
  • a simple viewing device and a method for simultaneously ascertaining the different colors of an optically variable entity under two different viewing angles has been disclosed in US 5,596,402 A (Markantes et al. ).
  • the device essentially uses a mirror to simultaneously allow a direct viewing of the optically variable entity under a first viewing angle and an indirect viewing of the same entity via the mirror under a second viewing angle.
  • Authentication of the optically variable entity is performed by comparing the two colors perceived with two reference colors.
  • This device of the prior art has the shortcoming of requiring a comparison of the colors of the optically variable entity under two different perspectives, i.e. the two images to be compared have not the same size along one direction.
  • a further shortcoming of this device is its rather large volume requirement to accommodate for the optical paths related to the direct and indirect viewing described above.
  • DE 19729918A1 dislcoses a bank note comprising security features and a verification element for verifying the security features.
  • the verification element is integrated into the bank note.
  • the present invention provides a device, a corresponding method, and the use of said device, each for authenticating an optically variable entity, according to the corresponding attached independent claims.
  • the device for the authentication of an optically variable entity exhibiting a color shift with changing viewing-angle comprises a plate of light-refractive material, said plate having two surfaces and a 2-dimensional array of micro-prisms on at least one of said surfaces, and being disposed in said device such as to provide, aside each other, a direct view and a view through said plate onto at least parts of said optically variable entity, said view through said plate being an angularly deflected view, resulting from light refraction at said micro-prisms.
  • the colors must be assessed for at least two different viewing angles, preferably a first viewing angle about orthogonal to the entity's surface, and a second viewing angle being an oblique angle to said surface.
  • part of the light from the optically variable entity must be deflected from said oblique to said orthogonal angle.
  • said deflection can be brought about by a mirror or by a prism, requiring optical paths of corresponding lengths.
  • a flat 2-dimensional array of micro-prisms in a plate of light-refracting material is used to produce said deflection from oblique to orthogonal angle.
  • the plate is preferably a planar plate having two macroscopically parallel surfaces.
  • the micro-prisms on the surface of said plate serve to obtain a deflection of orthogonally incident light away from orthogonal direction.
  • Micro-prisms refract light of orthogonal incidence at their faces into determined discrete directions other than orthogonal. This embodiment is useful to obtain a specific "angular view", or some kind of averaged "angular view” onto the optically variable entity in the context of the present invention.
  • the present invention is based on the principle of optical refraction.
  • Fig. 2 illustrates how Snellius' law of refraction is exploited in an exemplary embodiment of the present invention to obtain, from an orthogonal viewing position, an angular view onto an optically variable entity O disposed on a substrate S).
  • the prism plate P refracts light rays 1, incident at P at an orthogonal angle of 90° with respect to the surface of the optically variable entity O, such as to fall onto said optically variable entity O under an incident angle ⁇ smaller than 90°.
  • light rays 2 reflected from said optically variable entity O at an angle ⁇ against the surface of the optically variable entity O being smaller than 90° are reoriented by said prism plate P to a direction orthogonal to the surface of the optically variable entity.
  • a first principal embodiment of an authenticating device for the visual authentication with the otherwise unaided eye of an optically variable entity O having two portions O 1 and O 2 and being disposed on a substrate S.
  • the authenticating device comprises a plate P having an array of micro-prisms on its surface, and disposed closely over the optically variable entity O, in such a way as to allow for its relative movement with respect to said optically variable entity O.
  • the observer i.e. the authenticating person, looking at the optically variable entity at about orthogonal view, can now judge, and if needed, compare with reference colors, a first color of the optically variable entity O as seen under orthogonal view, i.e. at its portion O 1 and at an angle of 90° against the surface of the substrate, in the absence of said plate P, and a second color of the optically variable entity O as seen through said plate P at its portion O 2 and under said view angle ⁇ being smaller than 90°.
  • the plate having the array of light-refracting protrusions or recesses on its surface can be embodied as a positively embossed (for protrusions) respectively negatively embossed (for recesses) polycarbonate (PC) plastic plate.
  • Polycarbonate has a refractive index n in the range of 1.58 to 1.60.
  • thermoplastic polymers having a refractive index in the range of 1.50 to 1.80, in particlular polyetheretherketone (PEEK), polysulfone (PSU), polyethylenenaphtalate polyester (PEN), polyethyleneterephtalate (PET), polystyrene (PS), polyvinylchloride (PVC), polyamide (PA), polyehtlylene (PE), polyurethane (PUR), polypropylene (PP), as well as the various acrylic polymers, can also be used, as long as they are transparent in the visible spectral range from 400nm to 700nm.
  • PEEK particlular polyetheretherketone
  • PSU polysulfone
  • PEN polyethylenenaphtalate polyester
  • PET polyethyleneterephtalate
  • PS polystyrene
  • PVC polyvinylchloride
  • PA polyamide
  • PE polyehtlylene
  • PUR polyurethane
  • PP polypropylene
  • the thermoplastic polymer can also be a composite material comprising one of said organic polymers or a mixture thereof, together with a refractive-index-increasing inorganic nanoparticulate material, such as nanocrystalline Ti0 2 , having a refractive index of 2.0 or higher and a particle size below 50 nanometers in order to prevent light scattering effects at the individual particles.
  • a refractive-index-increasing inorganic nanoparticulate material such as nanocrystalline Ti0 2 , having a refractive index of 2.0 or higher and a particle size below 50 nanometers in order to prevent light scattering effects at the individual particles.
  • the thermoplastic polymer can be formed, i.e. embossed, above its glass-transition temperature.
  • the glass-transition temperature (Tg) is known to the skilled person as the temperature above which the thermoplastic polymer changes from a quasi-solid (rigid) to a quasi-liquid (moldable) state.
  • the required surface texture of protrusions or recesses, such as an array of micro-prisms, can thus be formed, i.e. embossed, into the thermoplastic plate, for example with the help of a hot roller carrying a master texture on its surface.
  • Useful glass transition temperatures for embossing lie generally above 60°C, preferably above 80°C.
  • Polycarbonate PC, "Lexan", "Macrolon”
  • PET has a Tg of about 70°C
  • PVC a Tg of about 80°C.
  • the authenticating device for the visual authentication of optically variable entity O on a substrate S comprises a plate P having an array of micro-prisms on its surface, the plate being disposed at an inclination angle ⁇ with respect to the optically variable entity O.
  • the observer i.e. the authenticating person, looking at the optically variable entity at about orthogonal view, can now judge, and if needed compare with reference colors, a first color of the optically variable entity as seen from view point 2 under orthogonal view (i.e.
  • This provides the advantage of having a maximum intensity of the illuminating light directly on the optically variable entity, which enhances the perception, by a user of the authenticating device, of the optical effects on which the authentication of the optically variable entity relies and thus ensures an even more reliable and a quicker authentication without the need for the user to first apply more optimal illumination conditions.
  • the authentication can also occur in places having a poor illumination.
  • This authenticating device can be used for the machine authenticating, e.g. in an automated currency acceptor, of an optically variable entity O on a substrate S.
  • the authenticating device comprises a first light source L disposed such as to illuminate said optically variable entity O at about orthogonal incidence through a plate P having an array of micro-prisms on its surface, said plate P being disposed closely above the optically variable entity O; a first light detector D disposed such as to receive light from said optically variable entity O at about orthogonal incidence through said plate P; a second light source L' disposed such as to directly illuminate said optically variable entity O at about orthogonal incidence; a second light detector D' disposed such as to directly receive light from said optically variable entity O at about orthogonal incidence.
  • Light sources L, L' and light detectors D, D' are connected to a processor ⁇ P enabled with memory and one or more programs to carry out the authenticating operation.
  • a single light source L may serve as the illumination source for both, the illumination through said plate P and the direct illumination of the optically variable entity O.
  • a single light detector D may serve to receive light reflected from said optically variable entity O through said plate P, and to receive light directly reflected from said optically variable entity O.
  • At least one of the one or more light sources L, L' is a broad-band emitter, such as an incandescent light source or a white LED.
  • At least one of the one or more light detectors D, D' is a red-green-blue (RGB) color sensor, such as are used to assess a color in the CIE 1976 (CIELAB) color space of human perception.
  • RGB red-green-blue
  • At least one of the one or more light detectors D, D' can be a more extended spectral sensor, embodied e.g. by a micro-spectrometer which delivers a plurality of wavelength/intensity values in the wavelength domain of human perception (400nm to 700nm).
  • said one or more light sensors deliver a plurality of wavelength/intensity values in the extended optical wavelength domain of 200nm to 2'500 nm.
  • At least one of said one or more light detectors D, D' is a broadband light intensity detector, and at least one of said one or more light sources L, L' is a spectrally variable light source.
  • at least one of the one or more light sources comprises a red, a green, and a blue LED, which are switched on and off in sequence, and the one or more light detectors corresponding to this at least one light source are broadband silicon photocells. In this way a color comparable to the CIE 1976 (CIELAB) color space of human perception can be assessed by measuring the reflected light intensities under red, green, and blue illumination.
  • At least one of the one or more light sources comprises LEDs emitting at other wavelength than those corresponding to RGB, including outside the visible spectrum, in the UV and/or in the IR spectral range in the optical wavelength domain of 200nm to 2'500nm, and the corresponding one or more light detectors are selected such as to be sensitive to the light emitted by said LEDs, in order to measure the relative reflected light intensities for each of them.
  • Said optically variable entity O on its substrate S may be movably disposed with respect to the authenticating device comprising plate P, the one or more light sources L, L', the one or more light detectors D, D' and the processor ⁇ P, such as to enable the authenticating device to scan said optically variable entity O on its substrate S.
  • Such scanning can be performed either manually, by drawing the optically variable entity through the authenticating device, or with the help of an electric conveyor; this latter option is the preferred one in case of an automated currency acceptor.
  • Said plate of light-refractive material carries positive or negative light-refracting embossings on at least one of its surfaces.
  • Said embossings may take the form of a 1-dimensional symmetric "roof" structure, such as shown in Fig. 5a ; or a 1-dimensional asymmetric "roof” structure, such as shown in Fig. 5b .
  • the plate has a 2-dimensional texture, such as the array of square prisms shown in Fig. 6a , or the array of triangular prisms shown in Fig. 6b .
  • a 2-dimensional texture deflects light in more than one direction from of to orthogonal incidence to the plate.
  • the one-dimensional texture is preferred for use in Figure 9
  • the two-dimensional texture provides an improved specular illumination in the embodiments of Figures 2 and 8 .
  • the present disclosure is not limited to embossings with geometric figures having planar surfaces.
  • Other suitable structures with non-planar surfaces such as for example a 1-dimensional lenticular array, e.g such as shown in Fig. 7a . or a 2 -dimensional lenticular array, e.g. such as shown in Fig. 7b . are also suitable to embody the plate of light-refractive material.
  • the invention is not limited to the use of a single plate of light-refractive material.
  • two or more such plates P 1 , P2 can be combined, i.e. stacked on top of each other, in order to obtain a stronger deflection of the orthogonally incident light beams, and thus to probe the color of the optically variable entity O on its substrate S at a lower viewing angle.
  • a method for authenticating an optically variable entity exhibiting a color shift with changing viewing-angle comprising the step of disposing a plate of light-refractive material on the optically variable entity, said plate having two surfaces and an array of light-refracting protrusions or recesses on at least one of said surfaces, such as to provide, aside each other, a direct view and a view through said plate onto at least parts of said optically variable entity, said view through said plate being an angularly deflected view, resulting from light refraction at said protrusions or recesses.
  • the optically variable entity is preferably authenticated by comparing its colors in direct view and in angularly deflected view through said plate with corresponding reference colors.
  • the colors of the optically variable entity in direct view and in angularly deflected view are assessed by the means of an automated device, comprising light sources L, L', light detectors D, D'), and a processor ⁇ P enabled with memory and one or more programs to carry out the authenticating operation.
  • an automated device comprising light sources L, L', light detectors D, D'
  • a processor ⁇ P enabled with memory and one or more programs to carry out the authenticating operation.
  • a single light source and/or a single light detector may be used.
  • a plate of light-refractive material for authenticating an optically variable entity having two surfaces and an array of light-refracting protrusions or recesses on at least one of said surfaces, such as to provide, aside each other, a direct view and a view through said plate onto at least parts of said optically variable entity, said view through said plate being an angularly deflected view, resulting from light refraction at said protrusions or recesses.
  • Example 1 A device according to a first principal embodiment of the present invention, for the visual authentication of an optically variable printed feature on a security document, was constructed as follows: Two sheets of "Luminit Direction Tuning Film 20°", a plastic film having the structure shown in Fig. 5b , which is obtainable from Luminit LLC, Torrance, CA, were assembled together according to Fig. 8 , such as to obtain a light-refracting plate yielding a total deflection of 40° from orthogonal incidence. The so obtained plate was mounted on a support structure such as to keep it rigid and straight, and to allow it's sliding over a banknote carrying said optically variable feature. By sliding the plate over the banknote, the colors of the optically variable feature at vertical incidence and at an incidence of 40° can be visually compared.
  • Example 1 schematically shown in Fig. 9 , two sheets of "Luminit Direction Tuning Film 20°" were assembled together according to Fig. 8 , such as to obtain a light-refracting plate yielding a total deflection of 40° from orthogonal incidence.
  • the plate was mounted at an inclination angle ⁇ of 45°, such as to allow a free illumination of the optically variable entity with ambient light from the side , i.e. by light that does not first have to pass through said plate before reaching and thus illuminating the optically variable entity.
  • Said optically variable printed feature can e.g. be obtained by printing an ink according to EP-A-0227423 , US 5,279,657 , WO 95/29140 or WO 2007/131833 ; the ink comprising flake shaped thin film optical interference pigments according to US 4,705,300 ; US 4,705,356 ; US 4,721,217 and the hereto related disclosure.
  • Example 2 A device according to Fig. 4 , for the machine-authentication of an optically variable feature on a security document, was obtained from the device of Example 1 by adding a white LED (Roithner Lasertechnik, Vienna B5-430-JD as a light source (L), an RGB color sensor (Hamamatsu S9702) as a light detector (D), and a microprocessor(Analog Devices ADuC812) enabled with memory and program to carry out the authenticating operation as a processing unit ( ⁇ P).
  • a white LED Roithner Lasertechnik, Vienna B5-430-JD
  • RGB color sensor Hamamatsu S9702
  • D light detector
  • a microprocessor(Analog Devices ADuC812) enabled with memory and program to carry out the authenticating operation as a processing unit ( ⁇ P).

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Credit Cards Or The Like (AREA)

Claims (15)

  1. Dispositif pour l'authentification d'une entité optiquement variable (0) présentant une variation de couleur lorsque l'angle de vue est changeant, le dispositif comprenant une plaque (P) de matériau réfractant la lumière, le dispositif étant caractérisé en ce que :
    ladite plaque a deux surfaces et un réseau bidimensionnel de micro-prismes sur au moins une desdites surfaces, et est disposée dans ledit dispositif de manière à fournir, séparément l'une de l'autre, une vue directe et une vue à travers ladite plaque sur au moins des parties de ladite entité optiquement variable, ladite vue à travers ladite plaque étant une vue défléchie angulairement, résultant d'une réfraction de la lumière au niveau desdits micro-prismes.
  2. Dispositif selon la revendication 1, dans lequel ladite plaque est disposée selon un angle d'inclinaison Φ par rapport à l'entité optiquement variable.
  3. Dispositif selon l'une des revendications 1 à 3, dans lequel ladite plaque de matériau réfractant la lumière est disposée de manière amovible par rapport à l'entité optiquement variable.
  4. Dispositif selon l'une des revendications 1 à 4, dans lequel ladite plaque ayant le réseau de micro-prismes sur sa surface est constituée de polymère thermoplastique transparent.
  5. Dispositif selon la revendication 4, dans lequel ledit polymère a un indice de réfraction situé dans la plage allant de 1,50 à 1,80.
  6. Dispositif selon la revendication 4, dans lequel ledit polymère thermoplastique a une température de transition vitreuse, Tg, supérieure à 60°C, de préférence supérieure à 80°C.
  7. Dispositif selon la revendication 4, dans lequel ledit polymère thermoplastique est un polymère sélectionné dans le groupe constitué de polycarbonate (PC), de polyétheréthercétone (PEEK), de polysulfone (PSU), de polyester polyéthylène naphtalate (PEN), de polyéthylène téréphtalate (PET), de polystyrène (PS), de polyvinychlorure (PVC), de polyamide (PA), de polyéthylène (PE), de polyuréthane (PUR), de polypropylène (PP), ainsi que des polymères acryliques.
  8. Dispositif selon l'une des revendications 1 à 7, comprenant en outre, au moins une source de lumière (L), au moins un détecteur de lumière (D), et un processeur (µP) ; la source de lumière (L) et le détecteur (D) étant connectés au processeur (µP), lequel est pourvu d'une mémoire et d'un ou plusieurs programmes, pour réaliser l'opération d'authentification.
  9. Dispositif selon la revendication 8, comprenant en outre un convoyeur électrique pour balayer l'entité optiquement variable.
  10. Dispositif selon la revendication 8, dans lequel ledit détecteur de lumière (D) est sélectionné dans le groupe constitué des capteurs de couleurs rouge-vert-bleu, des capteurs spectraux étendus dans le domaine de longueurs d'ondes optiques s'étendant de 200 nm à 2500 nm, des micro-spectromètres, et des détecteurs d'intensité de lumière à bande large.
  11. Dispositif selon la revendication 8, dans lequel ladite source de lumière (L) est sélectionnée dans le groupe constitué des émetteurs à bande large et des LEDs émettant dans le domaine spectral IR , visible et UV, dans le domaine de longueurs d'ondes optiques s'étendant de 200 nm à 2500 nm.
  12. Procédé pour authentifier une entité optiquement variable (0), présentant une variation de couleur lorsque l'angle de vue est changeant, le dispositif comprenant l'étape comprenant de disposer une plaque de matériau réfractant la lumière (P) sur l'entité optiquement variable, le procédé étant caractérisé en ce que :
    ladite plaque a deux surfaces et un réseau bidimensionnel de micro-prismes sur au moins une desdites surfaces, de manière à fournir, séparément l'une de l'autre, une vue directe et une vue à travers ladite plaque sur au moins des parties de ladite entité optiquement variable, ladite vue à travers ladite plaque étant une vue défléchie angulairement, résultant d'une réfraction de la lumière au niveau desdits micro-prismes.
  13. Procédé selon la revendication 12, dans lequel ladite plaque est disposée selon un angle d'inclinaison par rapport à ladite entité optiquement variable.
  14. Procédé selon l'une des revendications 12 à 13, dans lequel les couleurs de l'entité optiquement variable en vue directe et en vue défléchie angulairement sont évaluées au moyen d'un dispositif automatisé, comprenant des sources de lumière (L), des détecteurs de lumière (D), et un processeur (µP) pourvu d'une mémoire et d'un programme pour réaliser l'opération d'authentification.
  15. Utilisation d'une plaque (P) de matériau réfractant la lumière pour authentifier une entité optiquement variable (0), l'utilisation étant caractérisée en ce que :
    ladite plaque a deux surfaces et un réseau bidimensionnel de micro-prismes sur au moins une desdites surfaces, de manière à fournir, séparément l'une de l'autre, une vue directe et une vue à travers ladite plaque sur au moins des parties de ladite entité optiquement variable, ladite vue à travers ladite plaque étant une vue défléchie angulairement, résultant d'une réfraction de la lumière au niveau desdits micro-prismes.
EP20110182728 2011-09-26 2011-09-26 Dispositif et procédé d'authentification d'entités optiquement variables Active EP2573739B1 (fr)

Priority Applications (17)

Application Number Priority Date Filing Date Title
EP20110182728 EP2573739B1 (fr) 2011-09-26 2011-09-26 Dispositif et procédé d'authentification d'entités optiquement variables
ES11182728.3T ES2542002T3 (es) 2011-09-26 2011-09-26 Dispositivo y método para autentificar a una entidad ópticamente variable
BR112014006580-2A BR112014006580B1 (pt) 2011-09-26 2012-09-26 Dispositivo para a autenticação por máquina de uma entidade opticamente variável em um substrato e método para a autenticação de uma entidade opticamente variável
SG11201400550RA SG11201400550RA (en) 2011-09-26 2012-09-26 Optically variable entity authenticating device and method
KR1020147011011A KR20140081838A (ko) 2011-09-26 2012-09-26 광학 가변 개체 인증 장치 및 방법
US14/347,141 US9228901B2 (en) 2011-09-26 2012-09-26 Optically variable entity authenticating device and method
JP2014531131A JP2014532169A (ja) 2011-09-26 2012-09-26 光学的可変実体の認証装置および方法
PCT/EP2012/004034 WO2013045082A1 (fr) 2011-09-26 2012-09-26 Dispositif et procédé d'authentification d'entité optiquement variable
TW101135276A TW201314196A (zh) 2011-09-26 2012-09-26 光學可變實體驗證裝置及方法
CN201280046779.XA CN103827928B (zh) 2011-09-26 2012-09-26 光学可变实体鉴定装置和方法
RU2014116904/08A RU2014116904A (ru) 2011-09-26 2012-09-26 Аутентификационное устройство и способ аутентификации элементов с оптически переменными свойствами
ARP120103563A AR088054A1 (es) 2011-09-26 2012-09-26 Dispositivo y metodo para autentificar a una entidad opticamente variable
CA2848923A CA2848923C (fr) 2011-09-26 2012-09-26 Dispositif et procede d'authentification d'entite optiquement variable
MX2014003456A MX2014003456A (es) 2011-09-26 2012-09-26 Dispositivo y metodo de autentificacion de entidad opticamente variable.
AU2012314907A AU2012314907B2 (en) 2011-09-26 2012-09-26 Optically variable entity authenticating device and method
MA36822A MA35436B1 (fr) 2011-09-26 2014-03-13 Dipositif et procede d'authentification d'entite optiquement variable
HK14111865.3A HK1198376A1 (en) 2011-09-26 2014-11-24 Optically variable entity authenticating device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20110182728 EP2573739B1 (fr) 2011-09-26 2011-09-26 Dispositif et procédé d'authentification d'entités optiquement variables

Publications (2)

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EP2573739A1 EP2573739A1 (fr) 2013-03-27
EP2573739B1 true EP2573739B1 (fr) 2015-04-22

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EP20110182728 Active EP2573739B1 (fr) 2011-09-26 2011-09-26 Dispositif et procédé d'authentification d'entités optiquement variables

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DE102014223745A1 (de) * 2014-11-20 2016-05-25 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Erfassung von abgestrahltem Licht sowie Verfahren zur Herstellung

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US5171363A (en) 1979-12-28 1992-12-15 Flex Products, Inc. Optically variable printing ink
US5569535A (en) 1979-12-28 1996-10-29 Flex Products, Inc. High chroma multilayer interference platelets
US4705300A (en) 1984-07-13 1987-11-10 Optical Coating Laboratory, Inc. Thin film optically variable article and method having gold to green color shift for currency authentication
US4705356A (en) 1984-07-13 1987-11-10 Optical Coating Laboratory, Inc. Thin film optical variable article having substantial color shift with angle and method
NZ218573A (en) 1985-12-23 1989-11-28 Optical Coating Laboratory Inc Optically variable inks containing flakes
US4721217A (en) 1986-08-07 1988-01-26 Optical Coating Laboratory, Inc. Tamper evident optically variable device and article utilizing the same
JPH10512982A (ja) 1994-10-27 1998-12-08 フレックス プロダクツ インコーポレイテッド 光学的可変デバイスの複数の色変化特性を同時に確認する観察装置および観察方法
DE19729918B4 (de) * 1997-07-04 2010-07-01 Securency International Pty Ltd., Craigieburn Sicherheits- und/oder Wertdokument
DE10023004C2 (de) * 2000-05-11 2002-02-28 Wacker Chemie Gmbh Vorrichtung zur Detektion von Sicherheitsmerkmalen auf der Basis von flüssigkristallinen Materialien mit chiraler Phase und deren Verwendung
US7976068B2 (en) * 2002-10-10 2011-07-12 Document Security Systems, Inc. Double-blind security features
EP1854852A1 (fr) 2006-05-12 2007-11-14 Sicpa Holding S.A. Composition de revêtement pour la fabrication d'images induites magnétiquement

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EP2573739A1 (fr) 2013-03-27

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