EP1319220B2 - Systeme de securite, en particulier pour documents de valeur - Google Patents

Systeme de securite, en particulier pour documents de valeur Download PDF

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Publication number
EP1319220B2
EP1319220B2 EP01960674.8A EP01960674A EP1319220B2 EP 1319220 B2 EP1319220 B2 EP 1319220B2 EP 01960674 A EP01960674 A EP 01960674A EP 1319220 B2 EP1319220 B2 EP 1319220B2
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EP
European Patent Office
Prior art keywords
security
pattern
verification
security element
verification element
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.)
Expired - Lifetime
Application number
EP01960674.8A
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German (de)
English (en)
Other versions
EP1319220B1 (fr
EP1319220A1 (fr
Inventor
Irina Menz
Günther Dausmann
Benedikt Ahlers
Arnim Franz-Burgholz
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Giesecke+Devrient GmbH
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Giesecke+Devrient GmbH
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Publication date
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Application filed by Giesecke+Devrient GmbH filed Critical Giesecke+Devrient GmbH
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • G07D7/0032—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 using holograms
    • 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
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns

Definitions

  • the invention relates to a security system, in particular for the authenticity verification of value documents, which consists of a security element and a verification element, which make information hidden by surface contact visible to one another, and corresponding security elements, verification elements and value documents.
  • the invention further relates to methods and apparatus for reading the hidden information.
  • a self-verifying value document which generally carries unrecognizable information at a location under normal observation.
  • a verification element is applied, which can be made to coincide with the security information carrying the hidden information by folding the value document so that the hidden information becomes visible.
  • a text written in microwriting in the security element is increased by means of an optical lens as a verification element when the verification element is brought to coincide with the security element by folding the value document.
  • the security element and the verification element are designed such that they produce a so-called moiré pattern when covering the verification element with the security element.
  • both the security element as well as the verification element comprise a polarization element. With appropriate regionally different orientation of the polarization plane information can be made visible in this way.
  • the DE 197 29 918 A shows a banknote with a security feature and a verification element for verifying this security feature, wherein at least one verification element and at least one security feature verifiable with this verification feature are integrated into the banknote at different locations. The verification element and the security element are superimposed for verification.
  • the security or verification elements have an even higher degree of counterfeit security, so that on the one hand value documents can be made even more secure against forgery and the authenticity verification.
  • a security system comprises a planar security element which is arranged in a carrier plane.
  • the security element comprises a hologram carrier, which reconstructs a pattern holographic way, which lies outside the carrier plane under the incidence of light. Hidden information is stored in this pattern.
  • the security system according to the invention comprises an at least partially transparent verification element which makes the information concealed in the pattern holographically generated by the security element readable when the security element is touched flat when exposed to light.
  • a document of value or bill is thus at one point a security element.
  • This security element is a hologram carrier.
  • the hologram contained in it produces a light opposite the document to be secured offset image or pattern, which may be two-dimensional or three-dimensional.
  • hidden information is stored. This hidden information, which is now at a distance from the document, can be read out with a verification element.
  • the hidden information is thus not applied directly to the value document as in the case of known security features, but is only generated at a distance from the value document by holographic means.
  • the hologram of the security element makes the counterfeiting significantly more difficult.
  • the information stored in the holographically generated pattern can only be made visible by the verification element.
  • the security element includes a hologram that generates a phase modulated pattern when illuminated.
  • the hidden information can be stored in such a way that the phase of the light in the area of the hidden information is different from the phase of the surrounding areas of the pattern.
  • the verification element is then configured to convert this phase modulation to visible amplitude modulation. This is z. B. in a known manner by the phase contrast method or the Schlieren method possible.
  • the verification element comprises a hologram which reconstructs a corresponding pattern under incident light, which generates the necessary for the conversion of the phase modulation in an amplitude modulation optical light pattern.
  • the security element can be designed such that it generates a holographically generated pattern when the light is incident, but does not have a constant distance from the carrier plane.
  • the verification element must take into account this circumstance by appropriately adapted spatial frequencies. In such an embodiment, no information is visible in the level of the value document. Only the holographic reproduction produces the pattern in which the hidden information is stored. This pattern does not represent a plane but is at a varying distance from the plane of the security element. This changing distance can only be with help of the verification element are compensated. In addition, the information is additionally hidden, in which they in the holographically generated, non-planar pattern z. B.
  • the verification element has different tasks. On the one hand, it compensates for the different distance of the holographically generated pattern from the carrier plane. On the other hand, it makes the information hidden in the holographically generated pattern visible.
  • the holographically generated pattern which results from incident light on the security element, may have different distances from the carrier plane.
  • a 3D hologram can be generated.
  • a bill can be in a 3D hologram, which generates a pattern in only a small distance from the carrier plane, keep the blur within tolerable limits.
  • the information stored in the holographically generated pattern resulting from incident light on the security element can be read out with an external verification element.
  • both the verification element and the security element are applied to one and the same value document.
  • the elements can then be brought to coincidence in order to make the hidden information visible. In this way, a self-verifying system is possible.
  • the same effect can be achieved by juxtaposition of two bills in a corresponding orientation.
  • the pattern reconstructed by the incidence of light on the security element can be virtual or even real, ie can be imaged on a screen.
  • a security element for use in a security system according to the invention comprises a hologram structure which reconstructs a pattern with hidden information outside the carrier plane when holographically incident.
  • a verification element for use with a security system according to the invention serves to visualize the hidden information which is reconstructed by a security element outside the carrier plane of the security element when light is incident.
  • the verification element is at least partially transparent.
  • the verification element may carry another security feature. It can, for.
  • another hologram structure may be applied which produces another image superimposed on the hidden information like a background.
  • a value document according to the invention comprises a security element and / or a verification element.
  • the security system according to the invention can be designed so that it makes the hidden information with appropriate coverage of the verification element and the security element with appropriate incidence visible to the naked eye.
  • a device that allows the verification machine comprises a device which brings the security element with a verification element to cover.
  • the verification element may be part of the device or be applied to the object to be verified itself and be brought by machine folding with the security element to coincide.
  • a lighting device is provided which illuminates the security element and verification elements brought to cover.
  • the hidden information is visible and readable by means of a read-out device.
  • This can be z.
  • B. be a corresponding brightness detector that can detect differences in brightness in the hidden information.
  • the read-out device may comprise a camera which allows image processing and evaluation of the image of the hidden information.
  • Fig. 1 is a value document 1, such as a banknote, with a verification element 3 and a security element 5 shown.
  • the verification element is indicated by hatching.
  • the security element 5 comprises a hologram carrier.
  • this hologram carrier generates a pattern outside the plane of the document 1 when light enters, e.g. B. the bill.
  • the thus holographically generated pattern advantageously has a distance 7 of 100 to 300 ⁇ m from the surface of the bill 1.
  • the reference numerals 1, 3, 5, 7 and 9 are generally used in the following for various embodiments.
  • the security element 5 In an embodiment in which the verification element 3 carries a line grid, the security element 5 generates a holographic pattern upon incidence of light, which is likewise modulated in a strip shape. If one brings a verification element 3 with the security element 5 to cover, the line grid of the verification element has a distance from the holographically generated pattern. In this way, by tilting z. For example, the area below the line grid can be made visible or by vertical viewing direction the area between the line grid of the verification element 3. In this way, tilting effects can be generated, which are otherwise visible only in the presence of an actual distance between the grid pattern and the image plane.
  • Fig. 7 Such an embodiment is schematically visible in the side sectional view. Shown is a folded bill 1, have been brought in the verification element 403 and security element 5, 405 to cover. This is the position during the read-out process.
  • the term "readout” is generally used in this specification for verification, whether by the naked eye or by machine.
  • the verification element With appropriate incidence of light reconstructed from the hologram of the security element 5, 405 at a distance 7 from the contact plane 9, a holographically generated pattern 400.
  • the verification element is transparent and with a z. B. printed strip pattern provided. Due to the distance 7, the region of the holographically generated pattern 400, which is visible through the stripe pattern of the verification element 3, 403, depends on the viewing direction on the security element 5, 405. ever looking direction can z. B. the area below the stripe pattern 3, 403 be visible, or the area between the strip of the verification element 3, 403rd
  • FIGS. 4 to 8 are indicated by short vertical lines on the bill 1, in which area the verification element and the security element are located. Of course, these are not objective characteristics.
  • the FIGS. 4 to 8 not to scale. In particular, for example, the distance 7 is much smaller. Verification element and security element are directly adjacent to each other and are preferably not thicker than the bill. 1
  • the security element 5, which is in FIG. 1 is visible, can also be a hologram carrier, which generates a phase-modulated pattern outside the plane of the bill 1 upon incidence of light.
  • the verification element 3 is an element that converts this phase modulation into an amplitude modulation. Is this phase modulation z. B. in the form of the letters OK, by stacking the verification element 3 with the security element 5, as it is in FIG. 2 is shown, the hidden information "OK" 6 visible to the eye 8.
  • the verification element 3, 203 generates a line pattern upon incidence of light in the same plane outside the bill 1, when the verification element 3, 203 and security element 5, 205 lie on one another.
  • the line patterns are set to give a moiré pattern, as is known for the superposition of actual line patterns.
  • this moiré pattern information can be stored by appropriate arrangement of the holographically generated lines, so that z. B. again the font "OK" is recognizable.
  • the security element 5,105 can also produce a pattern 100 outside the plane of the bill 1, which is made visible by means of a lens structure 102 in the verification element 3, 103, z. B. by magnification, see Fig. 4 ,
  • a certain distance 7 from the lens structure of the pattern to be imaged is necessary, which according to the invention is obtained by the holographic reconstruction of the pattern 100.
  • the lens structure 102 thus does not need to have a certain thickness, as usual, to produce this distance from the object to be imaged.
  • Possible is z. B. a lenticular lens structure.
  • a simple other embodiment comprises a security element 5, which is outside the plane of the Bill 1 reconstructs a holographically generated pattern in the event of light, which carries only a portion of information that is not meaningful on its own.
  • the verification element 3 comprises a comparable holographic structure which reconstructs in the same plane outside the bill 1 a holographically generated pattern representing the remaining part of the information. If now the verification element is brought into coincidence together with the security element and exposed to light, then both parts of the hidden information become visible and can be read out together.
  • the partial information generated holographically by illuminating the security element 5 may include parts of the letters O and K that are not per se recognizable as such.
  • the remaining remaining parts of the letters O and K are holographically generated by illuminating the verification element in the same place when the two elements come to rest on each other. In this way the whole picture becomes OK.
  • a security element 5, 305 which generates a pattern 300 holographically outside the plane 9 of the bill 1, which has different polarization in different areas. While z.
  • a security element 5, 305 which generates a pattern 300 holographically outside the plane 9 of the bill 1, which has different polarization in different areas. While z.
  • the verification element 3, 303 is a polarizing filter that is polarized perpendicularly. In this way, the horizontally polarized light from the regions of the holographically generated pattern corresponding to the letters O and K can not pass through the verification element 3, 303, so that they appear black.
  • the holographically generated distance 7 between the reconstructed pattern of the security element makes the forgery more difficult. Ordinary direct storage of the information on the bill is easier to imitate than a hologram having corresponding information in a staggered plane. In addition, the information is such that it can only be read out with the aid of the verification element. Without such a verification element, the holographically stored information is not recognizable. An even higher security against counterfeiting can be achieved if the holographically generated pattern 505 has no constant distance 7 from the banknote l, but z. B. reconstructed in a wavy surface or in a stepped surface, see FIG. 8 in the scheme. In turn the ripple is much smaller than shown. In such an embodiment, the verification element 3, 503 is designed such that it does not account for this non-constant distance, wherein this can be achieved by a corresponding spatial frequency of the verification element.
  • the necessary hologram structures for the above embodiments may, for. B. optically produced or computer generated in conventional ways. They can of course be provided in different places or even several times on the bill. Likewise, z. B. an arrangement in two opposite corners of the bill conceivable.
  • the security element can produce both a virtual and a real image that can be captured on a screen.
  • the verification element 3 is at least partially transparent. Thus, light can strike the security element through the verification element and make the holographic pattern stored behind the banknote 1 visible. Viewing this pattern through the verification element reveals the hidden information.
  • a security feature can still be provided on the verification element itself, for. B. another hologram structure that causes a different optical effect to further increase the security against counterfeiting.
  • the transparency of the verification element must remain sufficient that the hidden information can still be read.
  • FIG. 2 shows the read-out process.
  • Viewer 8 sees the collated bill 1.
  • the verification element 3 lying on the security element 5 makes visible the information hidden in the pattern holographically generated by the security element 5.
  • Fig. 3 schematically a mechanical arrangement for reading the security system is shown.
  • the bill 1 is folded by machine, so that verification element 3 and security element 5 come to rest on each other.
  • the bill folded in this way is brought into the beam path of a lighting device 10 with a light direction 12.
  • the light beam 12 passes through the verification element 3 on the security element 5, which in the Fig. 3 is not visible.
  • the holographically generated pattern is detected by the verification element 3, which is at least partially transparent, with the aid of the camera 14, z. B. a CCD camera, taken in direction 13.
  • the verification element 3 recognizes the hidden information that is visible in the holographically generated pattern.
  • the image thus generated with the visible hidden information is transmitted from the camera 14 z. B. a computer unit 16.
  • an evaluation of the image can be made, for. For example, a comparison with expected images to verify authenticity.
  • the light source 10 may also be arranged behind the folded bill 1.
  • a device for reading the verification element is not fixed on the bill, but in the machine itself and the bill 1 is moved with the security element 5 past it.
  • the security system according to the invention thus offers the advantage that the hidden information is stored in a pattern which is not in the plane of the bill or the value document 1. Instead, the pattern outside the value document 1 is holographically generated. This makes the counterfeiting significantly more difficult.
  • holographic displacement of the pattern with the hidden information enables verification by means of elements which normally must be some distance from the hidden information pattern, e.g. As lenticular lens structures or line grid with a tilting effect. In the invention, no increased thickness is necessary because the distance is generated holographically.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Security & Cryptography (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Holo Graphy (AREA)
  • Credit Cards Or The Like (AREA)
  • Burglar Alarm Systems (AREA)
  • Saccharide Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (10)

  1. Système de sécurité, en particulier pour un document de valeur, comprenant un élément de sécurité plan (5, 105, 205, 305, 405, 505) situé dans un plan de support (9) qui, lorsqu'il est exposé à une lumière incidente, restitue par voie holographique, à l'extérieur du plan de support (9), un motif (100, 200, 300, 400, 500) dans lequel est enregistrée une information cachée, et comprenant un élément de vérification plan, au moins partiellement transparent (3, 103, 203, 303, 403, 503), qui rend lisible l'information qui y est enregistrée lorsque sa surface entre en contact avec la surface de l'élément de sécurité (5, 105, 205, 305, 405, 505), caractérisé en ce que l'élément de sécurité présente un premier support d'hologramme qui, lorsqu'il est exposé à une lumière incidente, restitue, à l'extérieur du plan du support (9), un premier motif dans lequel l'information cachée est enregistrée sous forme de modulation de phase, dans lequel l'élément de vérification (3) comprend un deuxième support d'hologramme qui, lorsqu'il est exposé à une lumière incidente, restitue un deuxième motif qui agit conjointement avec la modulation de phase, laquelle est engendrée par l'élément de sécurité (5) sous l'effet d'une lumière incidente, de telle sorte que la modulation de phase de l'élément de sécurité (5) est transformée en une modulation d'amplitude visible.
  2. Système de sécurité selon la revendication 1, dans lequel l'élément de sécurité (505) est conçu de telle sorte que le motif restitué par voie holographique (500) portant l'information cachée n'est pas restitué dans un même plan.
  3. Système de sécurité selon l'une quelconque des revendications 1 à 2, dans lequel la distance (7) qui sépare le motif restitué par une lumière incidente sur l'élément de sécurité (5, 105, 205, 305, 405, 505) du plan du support (9) se situe dans la gamme de quelques centaines de µm, de préférence de 100 à 300 µm.
  4. Système de sécurité selon l'une quelconque des revendications 1 à 3, dans lequel l'élément de vérification (3, 103, 203, 303, 403, 503) et l'élément de sécurité (5, 105, 205, 305, 405, 505) sont placés sur, ou incorporés dans, un objet (1), en particulier un document de valeur, de telle sorte que lorsque l'objet (1) est plié, leurs surfaces peuvent entrer en contact l'une avec l'autre.
  5. Système de sécurité selon l'une quelconque des revendications 1 à 4, dans lequel l'élément de sécurité (5, 105, 205, 305, 405, 505) est conçu de telle sorte que le motif restitué par une lumière incidente est virtuel.
  6. Système de sécurité selon l'une quelconque des revendications 1 à 4, dans lequel l'élément de sécurité (5, 105, 205, 305, 405, 505) est conçu de telle sorte que le motif restitué par une lumière incidente est réel.
  7. Utilisation d'un élément de vérification dans un système de sécurité selon l'une quelconque des revendications 1 à 6 pour rendre visible l'information cachée qui, lors d'une exposition à une lumière incidente, est restituée par un élément de sécurité (5, 105, 205, 305, 405, 505) selon l'une des revendications 1 à 6 dans un plan se trouvant à l'extérieur du plan du support (9) de l'élément de sécurité, caractérisé en ce que l'élément de vérification est agencé de telle sorte que la modulation de phase est transformée en une modulation d'amplitude visible.
  8. Utilisation selon la revendication 7, dans laquelle l'élément de vérification (3, 103, 203, 403, 503) est pourvu d'un attribut de sécurité supplémentaire.
  9. Document de valeur comprenant un système de sécurité selon l'une quelconque des revendications 1 à 6, dans lequel l'élément de sécurité (5, 105, 205, 305, 405, 505) et l'élément de vérification (3, 103, 203, 303, 403, 503) peuvent être mises en contact de surface l'une avec l'autre en pliant le document de valeur.
  10. Document de valeur selon la revendication 9, dans lequel l'élément de vérification (3, 103, 203, 303, 403, 503) porte des informations supplémentaires.
EP01960674.8A 2000-08-21 2001-08-17 Systeme de securite, en particulier pour documents de valeur Expired - Lifetime EP1319220B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10040785A DE10040785A1 (de) 2000-08-21 2000-08-21 Sicherheitssystem, insbesondere für Wertdokumente
DE10040785 2000-08-21
PCT/EP2001/009511 WO2002017242A1 (fr) 2000-08-21 2001-08-17 Systeme de securite, en particulier pour documents de valeur

Publications (3)

Publication Number Publication Date
EP1319220A1 EP1319220A1 (fr) 2003-06-18
EP1319220B1 EP1319220B1 (fr) 2007-07-18
EP1319220B2 true EP1319220B2 (fr) 2016-11-02

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EP01960674.8A Expired - Lifetime EP1319220B2 (fr) 2000-08-21 2001-08-17 Systeme de securite, en particulier pour documents de valeur

Country Status (8)

Country Link
US (3) US7315407B2 (fr)
EP (1) EP1319220B2 (fr)
AT (1) ATE367627T1 (fr)
AU (1) AU2001282102A1 (fr)
CZ (1) CZ2003558A3 (fr)
DE (2) DE10040785A1 (fr)
RU (1) RU2282244C2 (fr)
WO (1) WO2002017242A1 (fr)

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DE50112744D1 (de) 2007-08-30
DE10040785A1 (de) 2002-03-21
ATE367627T1 (de) 2007-08-15
WO2002017242A1 (fr) 2002-02-28
US20080062485A1 (en) 2008-03-13
US7724408B2 (en) 2010-05-25
RU2282244C2 (ru) 2006-08-20
US8077364B2 (en) 2011-12-13
EP1319220B1 (fr) 2007-07-18
US20100195176A1 (en) 2010-08-05
CZ2003558A3 (cs) 2003-11-12
US20030169468A1 (en) 2003-09-11
AU2001282102A1 (en) 2002-03-04
EP1319220A1 (fr) 2003-06-18
US7315407B2 (en) 2008-01-01

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