WO2012117056A2 - Procédé et élément de sécurité destinés à stocker une information à l'aide de microcanaux dans un substrat - Google Patents

Procédé et élément de sécurité destinés à stocker une information à l'aide de microcanaux dans un substrat Download PDF

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Publication number
WO2012117056A2
WO2012117056A2 PCT/EP2012/053514 EP2012053514W WO2012117056A2 WO 2012117056 A2 WO2012117056 A2 WO 2012117056A2 EP 2012053514 W EP2012053514 W EP 2012053514W WO 2012117056 A2 WO2012117056 A2 WO 2012117056A2
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
transparent
channels
opaque
light
Prior art date
Application number
PCT/EP2012/053514
Other languages
German (de)
English (en)
Other versions
WO2012117056A3 (fr
Inventor
Olga Kulikovska
Manfred Paeschke
Olaf Dressel
Jörg Fischer
André LEOPOLD
Original Assignee
Bundesdruckerei Gmbh
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
Application filed by Bundesdruckerei Gmbh filed Critical Bundesdruckerei Gmbh
Priority to EP12707529.9A priority Critical patent/EP2681055B1/fr
Publication of WO2012117056A2 publication Critical patent/WO2012117056A2/fr
Publication of WO2012117056A3 publication Critical patent/WO2012117056A3/fr

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Classifications

    • 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
    • B42D25/40—Manufacture
    • 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
    • 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
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/346—Perforations

Definitions

  • the invention generally relates to security elements for value and / or
  • Security documents in particular a method for producing a
  • Security element comprising at least one in a contiguous area for light opaque substrate in which by means of micro-channels information is stored. Furthermore, the invention relates to a corresponding
  • Security element for a value and / or security document.
  • a security element is an entity which comprises at least one security feature which is an imitation, falsification, copy or manipulation of the security element itself or of an article in or on which
  • Security element is attached to protect. Documents which have at least one security feature and / or one security element are referred to as
  • Security documents called. As a rule, security documents comprise a multiplicity of different security features and / or security elements.
  • Security documents include, for example, ID documents, passports, visas, identity cards, identity cards, driving licenses, vehicle registration documents, vehicle registration documents, registration certificates, company ID cards, admission cards, bank cards or
  • a subset of the security documents, which additionally embody a value, is also referred to as a group of value documents.
  • the group of value documents includes i.a. Banknotes, Postage Stamps, Tax Stamps, Stocks, Securities,
  • Falsifications and manipulations are obtained by the fact that the information which is protected by the security feature or security element is selected individually for the respective security element or security document in which the security element is or is integrated. For each security element to be forged is This then individually for the respective security document or security element to fake.
  • a group of security elements is formed by inserting recesses or perforations into a substrate.
  • a method for the production of identity documents which have indications which make it possible to identify or recognize at least one owner.
  • the method described therein comprises transmitting such indicia to a solid support in the form of at least a set of points distributed as pits or bumps at discrete intervals.
  • a first set of such points represents a passport photograph of the owner.
  • a second set of points may include various symbols, such as letters, numbers, or other graphical symbols, indicating the identity, an address, or other information about the user.
  • the points can be controlled by a controlled penetration of a tool into the medium of the substrate or via a
  • Interaction can be formed with a laser.
  • the dots are arranged as pits at regular intervals. In order to obtain contrasts between lighter and darker sections, it is proposed to vary their cross-section with constant spacing of the points. Another embodiment provides that depressions of uniform depth are produced and the density of the dots is varied.
  • the dots may also be formed as through holes through the substrate.
  • a similar security feature is known from EP 0 936 975 B1, in which a document is protected against counterfeiting by comprising a security feature in the form of a perforation pattern and the perforation pattern comprises holes of different sizes, the perforation pattern extending over a closed surface of the document and a passport photo represents.
  • the perforation pattern is generated by means of laser light.
  • the information can be verified immediately by viewing the perforation pattern, for example in transmitted light.
  • the disadvantage is that by adding or changing individual holes in the
  • the invention is based on the technical object to provide a novel security element and a method for its production, which is a
  • the invention is based on the idea that information in the form of
  • Light beam directions which occur in an optical imaging process to encode, wherein the light propagation directions in the form of transparent channels in an at least extensively extended opaque substrate "formed".
  • the transparent channels formed in the otherwise opaque substrate or opaque volume region of a substrate thus define light propagation directions which in their entirety store information which can be converted into a graphically perceptible representation by means of imaging optics, from which the information content is visual or, if one Illustration of the graphical representation is captured, can be detected by machine.
  • An advantage of the form of storage is that the perforation pattern itself, which is produced on surfaces of the substrate, does not directly store the stored one Information or its information content and thus a manipulation on adding more transparent channels is much more difficult. For a manipulation or forgery it is necessary, at least that necessary for the verification
  • a security element is any physical entity that includes at least one security feature.
  • a security feature is a feature that imitates, duplicates,
  • Security documents are documents which comprise at least one, preferably several, in particular different, security features and / or elements. According to the above definition of a security element, each represents
  • Value documents are a group of security documents that embody a value.
  • a precise distinction between value documents and those security documents that are not value documents is difficult in some areas, since, for example, bank or credit cards often themselves do not embody immediate value but allow for the possibility of having large sums of money.
  • a precise delimitation is not essential to the invention.
  • Directed radiation has a
  • Solid angle range has a high intensity.
  • the Intensity substantially, usually by several orders of magnitude, weaker, preferably close to zero. If such a directed radiation passes through a transparent material, the property is maintained that the intensity is concentrated in a limited solid angle range.
  • the solid angle range can increase, a significant diffuse scattering does not occur. However, a weakening with respect to an intensity of the radiation passing through the transparent region or the transparent spatial region can occur. Through a transparent material through an image according to the geometric appearance is possible.
  • electromagnetic radiation at least for one wavelength or one or more wavelength ranges.
  • Space is transparent or opaque, it is important that the wavelength or the wavelength range for which these properties are investigated or apply.
  • materials which are transparent, for example in the visible wavelength range, but opaque in the ultraviolet wavelength range.
  • a channel in the sense of the invention is understood to mean a space area which has at least one axis which runs straight through the space area.
  • a transparent channel formed in an opaque substrate constitutes, in the substrate, a space region penetrating the substrate, which is at least one light source
  • the space region is geometrically formed so that this a light passage along a direction extending straight through the space region or a narrow solid angle range around this straight through the Spaces favored spatial area and makes other propagation directions of light through the channel difficult or impossible.
  • An opaque substrate at least in a contiguous volume range, is a substrate comprising a contiguous volume region having a finite nonzero extent measured parallel to the surface normal of the substrate, and at least its entrance and exit surface for light of at least one wavelength or wavelength range , which impinges on the volume area parallel to surface normal, are opaque.
  • the entrance and exit surfaces are the boundary surfaces of the volume region which intersects an imaginary straight line along which directed light would propagate through the volume region, provided that volume region were transparent.
  • the volume area is opaque in its entire volume.
  • Information may be represented or stored in a variety of different ways.
  • a term such as the word "house” may be represented and stored on a white paper over the printed characters H-a-u-s in the form of printing ink.
  • Braille i. in the form of individual circular elevations over an otherwise smooth surface.
  • Other possible forms of representation consist in a binary coding of the individual characters, for example according to the ASCII code or the university code. Even if the configuration of the storage is different, all these have in common that they contain the same information content, namely the meaning of the term house. In the presentation, in which this term by means of
  • Character H-a-u-s is shown with ink on a white background, for example, this information content is visual for a person or after
  • Light is electromagnetic radiation of a predetermined wavelength range, for example the visible wavelength range.
  • light can also be UV radiation, IR radiation or comprise a combination of radiation of different wavelength ranges.
  • a direction vector is a vector indicating an orientation in three-dimensional space.
  • Each space vector can be assigned exactly one straight line in three-dimensional space. This is the line on which the space vector lies. A length of the space vector is insignificant, so that space vectors that are on the same straight line are considered equal.
  • a spatial vector can be an object which is represented by a point in space, for example a point in the surface plane of a surface
  • Substrate, and a direction vector is characterized.
  • a characterization of a transparent channel via a space vector takes place, for example, such that the point in space in an entry surface of the substrate determines the position of an entry opening and the direction vector indicates the orientation of a channel axis.
  • a method for producing a security element which according to a preferred embodiment is designed as a security document, is proposed, which comprises the steps: providing a substrate that is opaque to light at least in a continuous volume range, providing information to be stored in the form of a Set of orientations or
  • Direction vectors storing the information in the substrate by forming transparent channels in the opaque substrate within the contiguous volume region such that each of the orientations or each of the directional vectors at least one of the transparent channels is assigned, preferably each of the orientations or each of the direction vectors are each associated with a plurality of the transparent channels, each of the channels each favoring passage of light along a space vector associated with the respective channel, preferably exclusively along the associated channel Space vector which is collinear with the orientation or direction vector to which the respective transparent channel is assigned.
  • a direction vector a vector indicating an orientation in three-dimensional space is considered.
  • a space vector is considered to be an object which, in addition to an orientation determined for example by a direction vector, additionally indicates a point in space, for example a passage point of a straight line coincident with the direction vector through a predetermined plane, for example a surface of the opaque substrate.
  • Channels formed, for example, in the opaque substrate and having the same orientation with respect to the surface or normal to the substrate and thus having the same orientation, ie collinear with a directional vector indicating the orientation in space are distinguished by the passage points of straight lines , which with the corresponding space vectors in terms of their
  • a security element produced according to the proposed method for a security document comprises at least one substrate that is opaque to light in at least one contiguous volume area, wherein transparent channels for storing information are formed within the opaque volume area of the substrate, wherein it is provided that the transparent ones Channels are formed so that each of the channels each favors passage of light along a space vector associated with the transparent channel, preferably exclusively along the space vector associated with the transparent channel, the channels being formed such that along the space vectors through the transparent channels of the space vector Substrate passing light by means of a predetermined imaging optics on one in a given
  • Orientation to the imaging optics arranged screen can be mapped into a graphical representation, so that an information content of the stored information can be detected from the graphical representation.
  • An advantage of the invention is that the inlet and / or outlet openings of the transparent channels represent patterns, if they are perceptible, which do not graphically represent the stored information. Rather, the stored information is visually discernible only when light is made available, so that it passes through the opaque substrate along the directions predetermined by the space vectors of the individual transparent channels and is imaged onto a screen by means of a predetermined imaging optics. This then results in a graphic representation whose information content can be detected by a human user. Alternatively, an image of the graphical representation can be detected and evaluated by machine, for example by means of a pattern recognition and a comparison with predetermined data.
  • the transparent channels are formed by means of laser radiation in the form of microchannels in the opaque substrate region. This means that material is removed from the opaque substrate by laser ablation. As a result, through holes are created in the opaque substrate or a flatly extended opaque area, which no longer contain any opaque substrate material.
  • microchannels channels are designated, whose cross-sectional areas dimensions in the micrometer range, preferably in the range between 30 - 500 ⁇ , more preferably between 30 - 100 ⁇ and most preferably between 75 - 300 ⁇ amount.
  • the microchannels have circular or elliptical cross-sectional areas. The details with regard to a dimensioning of the microchannels always relate to their state before the lamination is carried out. In general, a directional selection increases the smaller a cross-sectional area of the one microchannel perpendicular to its longitudinal extent relative to the length of the channel along it
  • An advantage of the formation of the transparent channels as microchannels is that these in their entirety when viewed in both reflected and transmitted light are virtually imperceptible at the same time, since they are formed under different directions in the substrate. From a viewing direction which corresponds to one of the orientations, ie one of the direction vectors, contained in the set of orientations or direction vectors, only the transparent channels or microchannels to which a space vector is assigned, that is to say by a space vector, are observable which is collinear with the respective orientation. However, the stored information is only revealed through the entirety of the orientations formed in the document.
  • the transparent channels are formed as a micro-perforation, wherein the individual perforation holes represent the transparent channels and these are formed under different directions in the substrate and penetrate it.
  • the substrate is provided as an opaque film, which is preferably formed opaque, at least in a volume region below a planar region by the entire material thickness. Particularly preferably, a film which has been made opaque completely in the entire volume is used as the substrate.
  • Security document the opaque or at least in a volume range opaque film, which is the substrate, laminated with other films to a document body. Since large pressures are exerted during the lamination on the film composite in the heated state, it is advantageous to fill the transparent channels with a transparent material prior to lamination. This can be done, for example, by the fact that the material which has a sufficient viscosity is, for example, doctored into the transparent channels.
  • the material may be fix the material. This can be done, for example, via a UV or thermally reactive filling material that is appropriately fixed after filling by means of UV radiation or thermally.
  • a UV or thermally reactive filling material that is appropriately fixed after filling by means of UV radiation or thermally.
  • An entrance side and an exit side can be assigned to the transparent channels, and lens elements are formed on an exit surface, which is the surface of the document body or the substrate adjacent to the exit sides of the transparent channels, in one embodiment along the space vectors associated with the respective microchannels light passing through the microchannels on a screen which is arranged at a predetermined distance and in a predetermined orientation relative to the exit surface so as to image on the screen the image recorded by means of the microchannels
  • Information content in a graphical representation is perceptible. This ensures that the security element or the security document already necessary for the verification of the information content of the stored information
  • Imaging optics includes. For a verification, it is now only necessary to provide a suitable light source on the surface of the substrate or security document facing the entrance sides of the channels, which is capable of providing light, so that light is emitted through all the channels in accordance with the Channels associated space vectors falls, to then on an additional necessary screen, which is arranged at a predetermined distance preferably oriented parallel to the exit surface of the security element or value document, to obtain a graphical representation.
  • providing the information to be stored in a set of orientations comprises providing the information content to be stored in the form of a graphical representation and calculating an orientation for each of
  • Pixels which are necessary for representing the graphically perceptible information content each pixel being understood as a point in a focal plane of a converging lens of predetermined focal length.
  • the orientation resulting for a pixel represents a spatial direction under which light from an infinite light source in the form of parallel light rays would fall on the imaging optics embodied as a converging lens and in the focal plane of the condenser lens Focusing on a point would form the corresponding pixel.
  • the transparent channels thus ideally represent, for each pixel, the rays of an infinite point light source represented by the corresponding orientation.
  • Each pixel thus corresponds to an orientation so that one obtains a set of orientations or directional vectors which these
  • the dimensions of the cross-sectional areas of the microchannels are preferably selected to be smaller than a material thickness of the opaque substrate in order to achieve the highest possible angular selectivity or directional selectivity of the
  • Micro channels in relation to their length through the substrate the higher is a directional selection of the corresponding transparent channel.
  • Amount of light increases with the number of microchannels associated with this orientation and their associated directional vectors are thus collinear to the orientation or the direction vector indicating the orientation or characterizes.
  • the substrate is or is laminated with at least one further substrate layer to form a document body and the predetermined imaging optics are formed in the at least one further substrate layer.
  • the imaging optics is or is formed in the form of lens elements, wherein the lens elements together the
  • each lens element formed on the surface of the further substrate layer thus deflects the light passing through the further substrate layer in the region of the lens element in the same way as a surface element of the condenser lens would do.
  • the lens elements are formed so that they together represent an imaging characteristic of a converging lens whose central plane parallel to an exit surface of the other Substrate layer is oriented and whose central axis is in the region of a surface center of a projection of the at least one extended opaque volume region on the entrance surface of the substrate layer. Extends the projection of the
  • the central axis preferably extends through a center or geometric center of gravity of the volume region in which the transparent channels are formed.
  • the orientation of the central axis here is preferably collinear to a surface normal of the opaque substrate or the security element or security document.
  • the substrate which is opaque at least in one volume area, thus becomes part of one
  • the Document body is integrated, that at least one light source in the security document is arranged on a side facing the entrance sides of the transparent channels of the opaque substrate.
  • the light source can be designed, for example, as a light-emitting diode, for example organic light-emitting diode, as a light-emitting diode array or in the form of a differently designed display.
  • Substrate layer are disposed, which faces an entrance surface of the substrate, wherein the entrance surface of the substrate in which the transparent channels are formed, the surface, which faces the entrance sides of the transparent channels.
  • the light source which may comprise a plurality of light sources, or light sources are concealed towards an outer surface through an opaque layer. As a result, it is not possible to visually perceive the light source inside the document from the outside. This makes one more difficult
  • Fig. 1 is a schematic view of a first embodiment of a
  • 1 a is a schematic perspective view of a detail of
  • Fig. 2 is a schematic view of another embodiment of a
  • Security elements in a Vertechnischessituation wherein the security element includes a required for verification imaging optics;
  • Fig. 3 is a schematic view of an embodiment of a
  • Security document in a verification situation wherein the security document comprises a light source
  • Fig. 4 is a schematic view of yet another embodiment of a
  • the security document in a Verificationssituation, wherein the security document comprises a light source with a plurality of bulbs, and
  • 5 is a schematic flow diagram of a manufacturing method.
  • a substrate 1 is shown schematically. This is in the illustrated example in its entire volume opaque for light in a predetermined wavelength range, for example, formed in the visible wavelength range.
  • transparent channels 2.1 to 2.n are formed, which the opaque substrate as
  • the substrate is
  • the transparent channels are formed in a preferred embodiment by means of a laser as microchannels.
  • Each of the transparent channels 2.1 to 2.n is assigned a space vector 4.1 to 4.n.
  • a space vector 4.1 to 4.n indicates on the one hand a direction of the microchannel, for example in the form of a solid angle, which is indicated by the angle components ⁇ , p, with respect to a surface normal 9 of the substrate 1.
  • a space vector 4.1 to 4.n thus characterizes a position and orientation of the
  • the transparent channels 2.1 to 2.n are each assigned an inlet side 12.1 to 12.n at the inlet surface 11 of the substrate 1 and an outlet side 13.1 to 13.n at an outlet surface 14 of the substrate 1.
  • the transparent channels 2.1 to 2.n are designed so that they favor a passage through the substrate 1 of light, which passes through the substrate 1 along the space vector 4.1 to 4.n, which corresponds to the corresponding transparent channel 2.1 to 2.n assigned. A passage of light here deviating directions is prevented by the transparent channels 2.1 to 2.n as far as possible. This means that each of the transparent channels 2.1 to 2.n preferably each only light along one
  • the light thus enters the transparent channels 2.1 to 2.n via the inlet surface of the substrate and thus to the inlet channels 12.1 to 12.n into the corresponding channels 2.1 to 2.n and to the outlet sides 13.1 to 13.n from the Exit surface 14 of the substrate 1 again.
  • the exiting light or the light rays 15.1 to 15.n are guided onto a converging lens 7 serving as imaging optics.
  • a converging lens 7 serving as imaging optics.
  • a screen 8 is arranged, which is preferably parallel to Exit surface 14 of the substrate 1 is oriented.
  • Light rays 15.1 to 15.n which have the same orientation, ie whose transparent channels are characterized by space vectors 4.1 to 4.n, which are collinear with one another, are imaged on the screen 8 in the same pixel 16.1 to 16.k.
  • At least one transparent channel 2.1 to 2.n must therefore exist for each pixel 16.1 to 16.k, whose orientation, ie its angular coordinates oc, ⁇ , with respect to a surface normal 9 of FIG.
  • Entry surface 1 1 of the substrate 1 corresponds to that orientation of light which is imaged in the pixel in the focal plane. In other words, this means that exactly one orientation or one direction vector 3.1 to 3.k exists for each pixel 16.1 to 16.k on the screen 8.
  • An information content predetermined on the screen 8 by the pixels 16.1 to 16.k is thus completely characterized by a set of orientations, which are indicated for example by direction vectors 3.1 to 3.k.
  • the number of transparent channels 2.1 to 2.n assigned to an orientation defines only a quantity of light and thus a brightness of the corresponding pixel, as long as the associated transmission value is identical for each of the transparent channels.
  • the substrate 1 thus represents a security element 20.
  • a volume section of a substrate 1 is shown schematically similar to that of FIG. 1 in perspective.
  • the same technical features are identified in all figures with the same reference numerals.
  • Shown is a channel 2.n, which is defined by an associated space vector 4.n.
  • a coordinate system 24 is coupled to the substrate 1.
  • the x-direction and the y-direction of the Cartesian coordinate system 24 lie in the entrance surface 11 of the substrate layer 1.
  • the z-direction points into the substrate layer.
  • the channel is characterized by the coordinates x n , y n of foot point 10.n of the space vector 4.n in the entrance surface 11 and the angles a n and p n .
  • the angle a n indicates the angle of a central axis 25 of a channel projection 26 in the xz plane measured against the z direction. Accordingly are p n the angle of a Central axis 27 of a channel projection 28 measured in the yz plane against the z-direction. It is noted that, unlike the other figures, the xy plane of the coordinate system 24 here coincides with the entrance surface of the substrate 1, while in the other figures the xy plane coincides with the image plane. It turns out that the determination can be chosen arbitrarily.
  • FIG. 2 shows a further embodiment of a security element 20, in which the imaging optics are already integrated in the security element 20.
  • the same technical features are provided in all figures with the same reference numerals.
  • the embodiment according to FIG. 2 differs in that the substrate 1 is connected at the exit surface 14 to a further substrate layer 21.
  • Compound is formed, for example, in a lamination step.
  • an outer surface 22 facing away from the exit surface 14 becomes the further one
  • Substrate layer structured that these sections, lens elements 23 a
  • Compound lens analogous to the converging lens 7 of FIG. 1 comprises.
  • Lens elements 23 together represent the imaging optics which images the light beams 15.1 to 15.n emerging from the transparent channels 2.1 to 2.n onto the pixels 16.1 to 16.k on the screen 8.
  • a main plane 17 (see FIG. 1) of the lens is in this case oriented parallel to the entry or exit surface 14 of the substrate 1.
  • a central axis 18 of the imaging optics is preferably oriented centrally with respect to that region 19 in which the transparent channels 2.1 to 2.n are formed in the substrate 1.
  • the substrate is opaque at least in the region 19 in which the channels are formed along the entire extent perpendicular to the entry surface 11.
  • the embodiment according to FIG. 2 offers the advantage that no separately formed imaging optics are required for verification. For verification, only a suitable light source and a screen are necessary, which is arranged in the focal plane, which is defined by the trained in the form of lens elements 23 imaging optics.
  • FIG. 3 schematically shows an embodiment of a security document 30 in which a substrate 1 according to FIG. 1 is integrated. Adjacent to the entrance surface 1 1 of the substrate 1, an additional substrate layer is arranged, which is transparent or diffused. In this additional
  • a light source 6 is formed in the security document 30.
  • This may, for example, be a light-emitting diode, for example an organic light-emitting diode. If it is a point light source, so it is advantageous if the additional substrate layer 31 is formed diffusely scattering, as this ensures that in each of the transparent channels 2.1 to 2.n parallel to the light
  • Room vector 4.1 to 4.n which is associated with the corresponding channel 2.1 to 2.n.
  • the still further substrate layer 32 is opaque in preferred embodiments, so that verification of the security feature, which is formed by the information stored in the transparent channels, can only be verified if the light source 6 is activated.
  • leads to the light source 6 and electrical contacts may be formed in the security document at a suitable location, for example through the still further substrate layer 32, which are not shown here for reasons of simplification.
  • FIG. 4 shows yet another embodiment of a security document 30 similar to that of FIG.
  • the embodiment differs in that the light source is designed with a plurality of light sources in the form of an array, for example a light-emitting diode array.
  • a better illumination of the microchannels can be achieved.
  • it can be achieved that, in an extension of the through-passage direction of each of the transparent channels 2.1 to 2.n, predetermined by the respective space vector 4.1 to 4.n, one of the
  • Illuminant 33 is arranged. As a result, the amount of light which is transmitted through the transparent channels 2.1 to 2.n, be significantly increased, which significantly simplifies a verification.
  • FIGS. 1, 3 and 4 can most easily be verified with a verification device which has imaging optics
  • the verification device 51 additionally comprises a light source 6 Spot light source may be formed or comprise a plurality of lighting means and / or a light scatterer to provide a surface possible light source.
  • FIGS. 1 to 4 are merely exemplary embodiments. So can embodiments
  • the security document also includes the imaging optics similar to the embodiment of FIG. 2. Furthermore, a number of films and the configuration of which a document body is formed can be varied.
  • the verification device may comprise an excitation activation unit 52, which excites the light source 6 formed in the interior of the security document and, if appropriate, its light source 33 for generating light.
  • an excitation activation unit 52 which excites the light source 6 formed in the interior of the security document and, if appropriate, its light source 33 for generating light.
  • This can, depending on the design of the light source by means of electromagnetic radiation (in the case of a luminescent light source or in an antenna formed with an LED LED or OLED arrangement) or by providing a
  • Process steps together represent the process step "providing the information in the form of a set of orientations" 63.
  • an opaque substrate for example in the form of a film, 64 is provided.
  • microchannels as transparent channels preferably by means of
  • Laser radiation introduced 65 To avoid unwanted contamination of the microchannels and / or (as in the embodiment shown here) in a
  • Lamination with further substrate layers to avoid a document body deformation of the formed microchannels especially those which are not vertical are oriented to the surface of the opaque substrate, it is advantageous to fill the microchannels with a non-compressible material, such as transparent polymer material 66.
  • a non-compressible material such as transparent polymer material 66. This can be done for example by means of Einrakeln or a

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  • Burglar Alarm Systems (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un élément de sécurité (20), en particulier pour un document de sécurité (30), et un tel élément de sécurité (20) obtenu au moyen des étapes de procédé suivantes : la fourniture d'un substrat (1) configuré au moins dans une zone de volume continue de manière opaque à la lumière ; la fourniture d'une information à mémoriser sous forme d'un groupe d'orientations (vecteurs directionnels (3.1 à 3.n)) ; la mémorisation de l'information dans le substrat (1) du fait que des canaux transparents sont formés dans le substrat opaque à l'intérieur de la zone de volume opaque de sorte qu'à chacune des orientations (à chacun des vecteurs directionnels (3. à 3.n)) soit associé au moins un des canaux transparents (2.1 à 2.n), de préférence qu'à chacune des orientations (à chacun des vecteurs directionnels (3.1 à 3.n)) soient associés respectivement plusieurs des canaux transparents (2.1 à 2.n), chacun des canaux (2.1 à 2.n) favorisant respectivement un passage de lumière le long d'un vecteur spatial (4.1 à 4.n) associé au canal respectif, l'autorisant de préférence exclusivement le long du vecteur spatial (4.1 à 4.n) associé au canal respectif et colinéaire à l'orientation (au vecteur directionnel (3.1 à 3.n)), à laquelle (auquel) est associé le canal transparent (2.1 à 2.n) respectif.
PCT/EP2012/053514 2011-03-01 2012-03-01 Procédé et élément de sécurité destinés à stocker une information à l'aide de microcanaux dans un substrat WO2012117056A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12707529.9A EP2681055B1 (fr) 2011-03-01 2012-03-01 Procédé et élément de sécurité destinés à stocker une information à l'aide de microcanaux dans un substrat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011004933.9 2011-03-01
DE102011004933A DE102011004933B4 (de) 2011-03-01 2011-03-01 Verfahren und Sicherheitselement zur Speicherung einer Information mit Hilfe von Mikrokanälen in einem Substrat

Publications (2)

Publication Number Publication Date
WO2012117056A2 true WO2012117056A2 (fr) 2012-09-07
WO2012117056A3 WO2012117056A3 (fr) 2012-12-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/053514 WO2012117056A2 (fr) 2011-03-01 2012-03-01 Procédé et élément de sécurité destinés à stocker une information à l'aide de microcanaux dans un substrat

Country Status (3)

Country Link
EP (1) EP2681055B1 (fr)
DE (1) DE102011004933B4 (fr)
WO (1) WO2012117056A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564622A1 (fr) 1984-05-21 1985-11-22 Calvados Hubert Procede et dispositif de realisation de tous documents nominatifs et documents obtenus
DE19934434A1 (de) 1999-07-22 2001-02-01 Bundesdruckerei Gmbh Wert- und Sicherheitserzeugnis mit Mikrokanälen
EP0936975B1 (fr) 1996-11-05 2003-07-02 Industrial Automation Integrators (Iai) B.V. Dispositif de securite comportant un motif perfore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2359937C (fr) * 1999-01-21 2008-08-05 Johannes Ignatius Marie Cobben Document de securite muni d'un motif a perforations
DE102007025860A1 (de) * 2007-06-01 2008-12-04 Ovd Kinegram Ag Sicherheitsdokument und Verfahren zu dessen Herstellung
FR2965752B1 (fr) * 2010-10-08 2012-11-30 Arjowiggins Security Structure de securite incorporant des microperforations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564622A1 (fr) 1984-05-21 1985-11-22 Calvados Hubert Procede et dispositif de realisation de tous documents nominatifs et documents obtenus
EP0936975B1 (fr) 1996-11-05 2003-07-02 Industrial Automation Integrators (Iai) B.V. Dispositif de securite comportant un motif perfore
DE19934434A1 (de) 1999-07-22 2001-02-01 Bundesdruckerei Gmbh Wert- und Sicherheitserzeugnis mit Mikrokanälen

Also Published As

Publication number Publication date
EP2681055A2 (fr) 2014-01-08
DE102011004933A1 (de) 2012-09-06
EP2681055B1 (fr) 2015-01-21
WO2012117056A3 (fr) 2012-12-06
DE102011004933B4 (de) 2012-10-31

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