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EP2595817B1 - Optically variable security element with tilt image - Google Patents

Optically variable security element with tilt image Download PDF

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Publication number
EP2595817B1
EP2595817B1 EP11746165.7A EP11746165A EP2595817B1 EP 2595817 B1 EP2595817 B1 EP 2595817B1 EP 11746165 A EP11746165 A EP 11746165A EP 2595817 B1 EP2595817 B1 EP 2595817B1
Authority
EP
European Patent Office
Prior art keywords
layer
markings
optically variable
security element
recording layer
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
EP11746165.7A
Other languages
German (de)
French (fr)
Other versions
EP2595817A1 (en
Inventor
Christian Fuhse
Manfred Heim
Michael Rahm
Günter Endres
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.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient 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 Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP2595817A1 publication Critical patent/EP2595817A1/en
Application granted granted Critical
Publication of EP2595817B1 publication Critical patent/EP2595817B1/en
Active legal-status Critical Current
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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
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • 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
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B42D2035/14—
    • B42D2035/24—
    • B42D2035/36—
    • B42D2035/44—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to an optically variable security element for securing data carriers with a tilting image of first and second identifications which can be recognized from different first and second viewing directions.
  • the invention also relates to a method for producing such a security element and to a data carrier equipped with such a security element.
  • Data carriers such as identification cards, credit cards, bank cards and the like are increasingly being used in various service sectors, but also in the in-house area. They usually have to meet two opposing conditions. Because of their widespread use, they are a mass-produced product that should be simple and inexpensive to produce. On the other hand, they should offer the greatest possible security against counterfeiting or falsification due to their legitimacy function. A visually appealing appearance of the security features used also contributes to a high level of protection against counterfeiting, as attractive security features are more closely respected by the user and easier to memorize. The variety of available types of cards, particularly magnetic stripe cards and smart cards, is testimony to the numerous efforts and various suggestions as to how these conflicting requirements can be properly combined.
  • the invention has for its object to provide a security element of the type mentioned, which is simple and inexpensive to manufacture and combines an attractive visual appearance with high security against counterfeiting.
  • the first and second markings of the tilt image are present in an optically variable recording layer having a reflection layer formed by a vacuum vapor method.
  • the security element further includes a viewing element grid spaced from the recording layer, which displays the first and second indicia, respectively, as viewed from the first and second viewing directions.
  • the combination of a viewing element grid with an optically variable recording layer produces an optically multivariable security element in which the first optically variable effect of the tilt image and the second optically variable effect of the recording layer interact with one another and visually enhance each other.
  • the recording layer comprises a reflection layer generated by a vacuum vapor method
  • a simple and inexpensive introduction of a desired tilting image is possible in the security element.
  • costly optically variable inks can thus be dispensed with.
  • the use of relatively expensive laser technology for generating the markings is expedient, it is not absolutely necessary for the production of security elements according to the invention. Rather, the markings can also be introduced into the recording layer by a large-area mask exposure or by other demetallization methods, such as washing, etching or oil ablation.
  • the proposed security element thus combines a high degree of protection against counterfeiting with an attractive visual appearance and a simple and cost-effective production.
  • the optically variable recording layer preferably contains a thin-film element with a color-shift effect.
  • the thin-film element advantageously has a reflection layer, an absorber layer and a dielectric spacer layer arranged between the reflection layer and the absorber layer.
  • the first and / or second markings in this case are preferably formed by recesses in the absorber layer and / or the reflection layer and / or in the dielectric spacer layer.
  • the first and / or second markings respectively comprise first and second part markings, wherein the first part markings are formed by recesses only in the absorber layer and the second part markings are formed by cutouts are formed both in the absorber layer and in the reflection layer, so that the security element shows different tilting images in plan view and see through.
  • the first and second markings may be introduced into the optically variable recording layer from different directions through the viewing element grid in all designs with laser radiation. If the markings respectively comprise the abovementioned first and second part markings, then they are advantageously introduced into the optically variable recording layer with laser radiation having different laser energy through the viewing element grid.
  • the reflection layer of the optically variable recording layer is present over the entire area at least outside the markings.
  • the reflection layer of the optically variable recording layer outside the markings is rastered at least in partial regions and consists in these subregions of a multiplicity of raster elements which are formed by recesses in a substantially opaque layer, or by a substantially opaque, spaced pattern primitive are formed.
  • the screened subregions of the reflection layer advantageously form a motif in the form of patterns, characters or an encoding that becomes visible when the security element is viewed through.
  • the raster elements of the reflection layer can be arranged regularly or stochastically.
  • a stochastic arrangement may in particular be used to avoid unwanted moiré effects.
  • the grid elements are circular, preferably with a diameter between 10 .mu.m and 100 .mu.m, or linear, preferably formed with a width of 30 microns to 70 microns.
  • the viewing element grid is advantageously formed from a plurality of microlenses, in particular of cylindrical lenses or spherical lenses, or of a plurality of micromill mirrors.
  • the reflection layer is preferably made of a metal, in particular of aluminum.
  • a metal in particular of aluminum.
  • other metals such as silver, nickel, copper, iron, chromium, gold, alloys of these or other metals or other highly reflective materials come into consideration.
  • the optically variable recording layer is separated from the viewing element grid by a transparent spacer layer.
  • the first and second markings are introduced with laser radiation from different directions through the viewing element grid into the optically variable recording layer.
  • the first and second markings are introduced into the optically variable recording layer by a washing, etching or oil ablation method.
  • the invention also includes a data carrier, in particular a brand article, a document of value, an identity card and the like, with a security element of the type described.
  • a data carrier in particular a brand article, a document of value, an identity card and the like, with a security element of the type described.
  • the invention offers particular advantages with data carriers in the form of cards, such as credit cards, bank cards, cash cards, authorization cards, identity cards or passport personalization pages ,
  • FIG. 1 shows a schematic representation of an identification card 10 in the ID-1 format, which is provided with a security element 20 according to the invention.
  • FIG. 2 schematically shows a cross section of the card 10 in the region of the security element 20 along the line II-II of Fig. 1 ,
  • the card 10 in addition to conventionally applied data 12 on an optically variable security element 20, which contains a tilting image of first and second markings 24, 26, which in Fig. 1 are schematically represented by the letters "AAA” and "BBB". Unlike in the graphic representation of Fig. 1 are the markings 24, 26 when viewing the card 10 not simultaneously, but only by tilting the card 10 in a different tilt angle 40,42 recognizable.
  • the markings 24, 26 of the tilt image are present in an optically variable recording layer 30, for example a thin-film element with a color-shift effect.
  • the recording layer 30 includes a reflection layer formed by a vacuum vapor method, thereby allowing a tilting image to be easily and inexpensively introduced into the optically variable recording layer.
  • the reflection layer is the reflector of a thin-film element with a color-shift effect.
  • the security element 20 further includes a viewing element grid 32 separated from the recording layer 30 by a spacer layer 28 and consisting of a plurality of parallel cylindrical lenses 34.
  • the viewing element grid 32 is formed in the embodiment in the form of a horizontal lens grid, but it may be formed in other embodiments, for example, in the form of a vertical lenticular grid.
  • the thickness of the spacer layer 28 and the focal length of the cylindrical lenses 34 are matched to one another such that the markings 24, 26 of the recording layer 30 lie approximately in the focal plane of the lenses 34.
  • the markings 24, 26 are written into the optically variable recording layer 30 after application of the lenticular screen 32 by means of a pulsed infrared laser.
  • a laser beam from different directions 40 and 42 on the lenticular grid 32 directed.
  • the cylindrical lenses 34 focus the laser beam depending on the direction of irradiation 40,42 on different portions of the optically variable recording layer 30 and generate there by the interaction of the laser radiation with the material of the recording layer 30, the desired markings 24,26.
  • This interaction may, for example, consist in a local demetallization of the reflection layer and / or the absorber layer of a color-shifting thin-film element, as described with reference to FIG Fig. 3 explained in more detail below.
  • the partial areas inscribed with this marking 24 can be seen from the viewing direction 40 because of the focusing effect of the cylindrical lenses 34 and, for a viewer, form the letters "A A A”. Accordingly, from the viewing direction 42, the subregions inscribed in this direction can be recognized by the markings 26 and, for a viewer, are combined to form the letters "B B B". From the shallower viewing directions 44, 46, the cylindrical lenses each show only partial regions of the optically variable recording layer 30 which have not been modified by laser radiation and contain no markings.
  • the security element 20 thus has an optically double-variable appearance when viewed.
  • the first optically variable effect is given by the tilting effect of the tilting image 24, 26. If the card is tilted from the viewing direction 44 via the viewing directions 40 and 42 to the viewing direction 46, the viewer first sees the recording layer 30 without marking (viewing direction 44), from the viewing direction 40, the first marking 24 and from the viewing direction 42 then the second marking 26 is visible, up to Finally, only the recording layer 30 without markings can be recognized again in the viewing direction 46.
  • the second optically variable effect is given by the optical variability of the recording layer 30 itself and depends on the type of the selected recording layer.
  • the second optically variable effect is preferably a viewing-angle-dependent color-shift effect that conveys to the viewer a color impression that changes with the viewing direction.
  • the color impression of the recording layer can, for example, change from green to blue, blue to magenta, or magenta to green when the security element is tilted.
  • FIG. 3 shows in (a) to (c) three embodiments of the invention, in which the optically variable recording layer is formed by a thin-film element 50 with color shift effect, which includes a reflective layer 52, an absorber layer 56 and a dielectric spacer layer 54 between the reflective layer and the absorber layer having.
  • the first and second markings 24, 26 are each formed by recesses 66 in the absorber layer 56 of the thin-film element 50.
  • Such recesses 66 can be generated, for example, by laser application of the thin-film element 50 with relatively low laser energy.
  • the security element of Fig. 3 (a) In plan view, the demetallized recesses 66 of the absorber layer 56 appear with no color shift effect with the color of the reflective layer 52, while the lying outside of the recesses 66 areas of the thin-film element 50 show the predetermined color shift effect.
  • the markings 24, 26 formed by the demetallized recesses 66 when viewing the security element in plan view from the viewing direction 40 may be silvery glossy letter "AAA” and viewing direction 42 silver shiny letter “BBB” a color-shifting background. From other viewing directions 44, 46 neither the letters “A A A” of the marking 24 nor the letters “B B B” of the marking 26, but only the color-shifting background of the thin-film element 50 can be seen.
  • the security element of Fig. 3 (a) is designed for viewing in supervision, and in particular may be arranged in an opaque area of a card 10 or other data carrier.
  • the first and second markings 24, 26 are respectively formed by recesses 62 in both the absorber layer 56 and the reflective layer 52 of the thin film element 50.
  • Such recesses 62 can be generated, for example, by laser application of the thin-film element 50 with relatively high laser energy, so that not only the absorber layer 56 but also the reflection layer 52 is demetallized in certain areas.
  • the demetallized recesses 62 of the absorber layer 56 and the reflection layer 52 appear colorless, while the areas of the thin-film element lying outside of the recesses 62 show the predetermined color-shift effect. Since the recesses 62 also extend through the reflective layer 52, they are visible not only in plan view, but also in view and then appear bright against the dark background of the opaque reflection layer 52.
  • the markings 24, 26 formed by the demetallized recesses 62 when viewing the security element from the viewing direction 40 for an observer may be composed of the numbers "111" and from the viewing direction 42 to the numbers "2 2 2".
  • the numbers appear colorless in front of the color-shifting background of the thin-film element 50; in transmitted light they appear bright against the dark background of the reflection layer 52.
  • the security element of Fig. 3 (b) is designed to be viewed both in plan view and in transparency, and in particular may be arranged in a transparent or translucent window area or over an opening of a card 10 or other data carrier.
  • a suitable variation of the laser parameters for example the laser energy
  • recesses 66 were produced only in the absorber layer 56 of the thin-film element 50, which respectively form first partial identifications 24-A and 26-A of the markings 24, 26.
  • recesses 62 were formed in both the absorber layer 56 and the reflective layer 52 of the thin-film element 50, respectively forming second indicia 24-B and 26-B of the indicia 24, 26.
  • the demetallized recesses 66 of the absorber layer 56 without color shift effect appear with the color of the reflective layer 52, while the demetallized recesses 62 of the absorber layer 56 and the reflective layer 52 appear colorless.
  • the lying outside of the recesses 62 and 66 areas of the thin-film element show the predetermined color shift effect.
  • only the recesses 62 that also extend through the reflective layer 52 are visible, as in FIG Fig. 3 (b) described.
  • the security element of Fig. 3 (c) thus shows in supervision and review two different tilt images.
  • the part markings 24-A, 26-A formed by the recesses 66 may complement the letters "AAA” from the viewing direction 40 and the letters “BBB” from the viewing direction 42, and the through-cutouts 62 from the viewing direction 40 to the numbers "111" and from the viewing direction 42 to the numbers "2 2 2".
  • the viewer sees then formed by the recesses 66 part markings 24-A, 26-A with the color impression of the reflective layer 52 silvery shiny and formed by the continuous recesses 62 part markings 24-B, 26-B colorless, so takes on tilting of the security element, a tilting picture "A1 A1 A1" to "B2 B2 B2" before a farbkippenden background true, the letters each appear silvery shiny and the numbers appear colorless.
  • the reflective layer of the optically variable recording layer can not only be present over the full area outside the markings, as in US Pat Figures 2 and 3 but can also be screened there at least in some areas.
  • FIG. 4 shows a security element 70 with an optically variable recording layer in the form of a color-shifting thin-film element 72 with a rastered reflection layer 74, an absorber layer 56 and a dielectric spacer layer 54.
  • the first and second markings 24, 26 are, similar to the embodiment of Fig. 3 (b) , formed by recesses 76 both in the absorber layer 56 and in the reflective layer 72 of the thin-film element 70.
  • the reflection layer 74 is scanned outside the markings 24, 26 and consists of a multiplicity of spaced raster elements 78.
  • the security element 70 is therefore not opaque in transparency, even outside the markings, but weakly transparent.
  • the raster elements 78 may be formed in a circle with a diameter between 10 .mu.m and 100 .mu.m.
  • the rasterization can be carried out in such a way that the raster elements 78 are visible in a direction-dependent manner, but that averaged over several lens diameters, a direction-independent transmittance of the reflection layer 74 is present. It has a stochastic distribution the raster elements 78 are found to be advantageous in order to avoid unwanted moiré effects.
  • the security element can also be combined with further, for example printed supervisory / review features, such as a vanishing in print information.
  • printed supervisory / review features such as a vanishing in print information.
  • the latter can also be provided on the back of the security element.
  • the reflection layer of the optically variable recording layer can also be partly full-surface and partially rastered.
  • FIG. 5 shows a security element 80, which largely as the security element 70 of Fig. 4 is constructed.
  • the recording layer 72 of the security element 80 contains a reflection layer 82, which is present in the first partial regions 84 in a rasterized manner and in second partial regions 86 in a rasterized manner.
  • the rasterized subregions 86 form a motif through their outline shape, which, due to the weak transparency of the rastered subregions 86, becomes visible in the light of the opaque background of the full-surface subregions 84.
  • the security element 80 thus has, in addition to the optically doubly variable appearance, a supervisory / see-through effect, namely the motif of the screened subareas 86 appearing in the transmitted light. As a result of different sizes or spacings of the raster elements 78, this motif can also be formed with a plurality of gray levels become.
  • the markings 24, 26 can also be introduced into the recording layer in a different manner instead of the described laser application through the lenses 34, for example by demetallization of an absorber or reflection layer by a washing, etching, or Oil ablation. Also, optical ablation may be accomplished, for example, by patterning the recording layer over a high resolution mask with a single exposure.
  • a security element 90 comprises a grid of a plurality of hollow micro-mirrors 92 which are separated from the optically-variable recording layer 72 by a spacer layer 28.
  • the recording layer 72 must be at least partially transparent in this variant of the invention, which can be ensured, for example, by the use of a screened reflection layer 74. Furthermore, the recording layer 72 is to be arranged such that its optically variable effect is visible from the underside 96, that is to say the side facing the hollow micro mirrors 92, as in FIG Fig. 6 shown.
  • the optically variable effect is from the top side
  • a motif can be inscribed in the optically variable recording layer 72 by means of laser exposure as described above, or the recording layer 72 can be structured by a washing, etching, or oil ablation process.
  • the reflector 94 of the micro-cavity mirror 92 can be designed as an optically variable layer and can be formed in particular by a color-shifting thin-film system.
  • the reflector 94 of the micro-cavities 92 may also be partially or completely scanned to produce see-through effects.
  • the screened areas of the reflector 94 may form a motif and / or make additional security features attached to the back of the security element 90 visible.
  • the tilt images of the recording layer may exhibit an enlargement and / or depth effect as known from Moire Magnifier systems.
  • the generation and properties of such micro-optical representational arrangements are, for example, in the international applications WO 2009/00528 A1 and WO 2006/087138 A1 described.
  • a marking is then to be seen below the respective tilt angle which, depending on the embodiment, seems to float in front of or behind the plane of the security element.

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  • Accounting & Taxation (AREA)
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  • Health & Medical Sciences (AREA)
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Description

Die Erfindung betrifft ein optisch variables Sicherheitselement zur Absicherung von Datenträgern mit einem Kippbild aus ersten und zweiten Kennzeichnungen, die aus unterschiedlichen ersten bzw. zweiten Betrachtungsrichtungen erkennbar sind. Die Erfindung betrifft auch ein Verfahren zum Herstellen eines solchen Sicherheitselements und einen mit einem derartigen Sicherheitselement ausgestatteten Datenträger.The invention relates to an optically variable security element for securing data carriers with a tilting image of first and second identifications which can be recognized from different first and second viewing directions. The invention also relates to a method for producing such a security element and to a data carrier equipped with such a security element.

Datenträger, wie beispielsweise Ausweiskarten, Kreditkarten, Bankkarten und dergleichen werden in steigendem Maß in verschiedenen Dienstleistungssektoren, aber auch im innerbetrieblichen Bereich eingesetzt. Sie müssen dabei in der Regel zwei gegenläufige Bedingungen erfüllen. So stellen sie wegen ihrer großen Verbreitung zum einen ein Massenprodukt dar, das einfach und kostengünstig herzustellen sein soll. Zum anderen sollen sie aufgrund ihrer Legitimationsfunktion größtmögliche Sicherheit gegen Fälschung oder Verfälschung bieten. Auch ein visuell ansprechendes Erscheinungsbild der eingesetzten Sicherheitsmerkmale trägt zu einer hohen Fälschungssicherheit bei, da attraktive Sicherheitsmerkmale vom Benutzer stärker beachtet und leichter memoriert werden. Die Vielzahl der erhältlichen Arten von Karten, insbesondere von Magnetstreifenkarten und Chipkarten, ist Zeugnis für die zahlreichen Bemühungen und die verschiedenartigen Vorschläge, wie diese gegenläufigen Anforderungen in geeigneter Weise miteinander verbunden werden können.Data carriers such as identification cards, credit cards, bank cards and the like are increasingly being used in various service sectors, but also in the in-house area. They usually have to meet two opposing conditions. Because of their widespread use, they are a mass-produced product that should be simple and inexpensive to produce. On the other hand, they should offer the greatest possible security against counterfeiting or falsification due to their legitimacy function. A visually appealing appearance of the security features used also contributes to a high level of protection against counterfeiting, as attractive security features are more closely respected by the user and easier to memorize. The variety of available types of cards, particularly magnetic stripe cards and smart cards, is testimony to the numerous efforts and various suggestions as to how these conflicting requirements can be properly combined.

In diesem Zusammenhang ist es bekannt, Datenträger zur Absicherung mit lasergravierten Kippbildern zu versehen. Dabei werden zwei oder mehr verschiedene Kennzeichnungen, beispielsweise eine Seriennummer und ein Ablaufdatum, unter unterschiedlichen Winkeln durch eine Anordnung zylindrischer Linsen in die Karte lasergraviert. Die Laserstrahlung erzeugt dabei eine lokale Schwärzung des Kartenkörpers, die die eingravierten Kennzeichnungen visuell sichtbar macht. Bei der Betrachtung ist je nach Blickwinkel nur die jeweils aus dieser Richtung eingravierte Kennzeichnung sichtbar, so dass durch eine Verkippung der Karte parallel zur Achse der Zylinderlinsen ein optisch variabler Kippeffekt entsteht.In this context, it is known to provide data carriers for protection with laser-engraved tilting images. In this case, two or more different markings, such as a serial number and an expiration date, are laser engraved at different angles by an array of cylindrical lenses in the card. The laser radiation generates a local blackening of the card body, the engraved markings visually visible. When looking at it, depending on the viewing angle, only the marking engraved from this direction is visible, so that an optically variable tilting effect is produced by tilting the card parallel to the axis of the cylindrical lenses.

Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Sicherheitselement der eingangs genannten Art zu schaffen, das einfach und kostengünstig herzustellen ist und dabei ein attraktives visuelles Erscheinungsbild mit hoher Fälschungssicherheit verbindet.Based on this, the invention has for its object to provide a security element of the type mentioned, which is simple and inexpensive to manufacture and combines an attractive visual appearance with high security against counterfeiting.

Diese Aufgabe wird durch das Sicherheitselement mit den Merkmalen des Hauptanspruchs gelöst. Ein Verfahren zum Herstellen eines derartigen Sicherheitselements und ein Datenträger mit einem solchen Sicherheitselement sind in den nebengeordneten Ansprüchen angegeben. Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the security element having the features of the main claim. A method for producing such a security element and a data carrier with such a security element are specified in the independent claims. Further developments of the invention are the subject of the dependent claims.

Gemäß der Erfindung liegen bei einem gattungsgemäßen Sicherheitselement die ersten und zweiten Kennzeichnungen des Kippbilds in einer optisch variablen Aufzeichnungsschicht vor, die eine durch ein Vakuumdampfverfahren erzeugte Reflexionsschicht aufweist. Das Sicherheitselement enthält weiter ein von der Aufzeichnungsschicht beabstandetes Betrachtungselementraster, das bei Betrachtung aus der ersten bzw. zweiten Betrachtungsrichtung die ersten bzw. zweiten Kennzeichnungen zeigt.According to the invention, in a generic security element, the first and second markings of the tilt image are present in an optically variable recording layer having a reflection layer formed by a vacuum vapor method. The security element further includes a viewing element grid spaced from the recording layer, which displays the first and second indicia, respectively, as viewed from the first and second viewing directions.

Durch die Kombination eines Betrachtungselementrasters mit einer optisch variablen Aufzeichnungsschicht entsteht ein optisch multivariables Sicherheitselement, bei dem der erste optisch variable Effekt des Kippbilds und der zweite optisch variable Effekt der Aufzeichnungsschicht miteinander wechselwirken und einander gegenseitig visuell aufwerten. Durch das weitere Merkmal, dass die Aufzeichnungsschicht eine durch ein Vakuumdampfverfahren erzeugte Reflexionsschicht umfasst, ist eine einfache und kostengünstige Einbringung eines gewünschten Kippbilds in das Sicherheitselement möglich. Auf den Einsatz kostspieliger optisch variabler Druckfarben kann damit verzichtet werden. Auch die Verwendung vergleichsweise aufwendiger Lasertechnik zum Erzeugen der Kennzeichnungen ist zwar zweckmäßig, jedoch für die Herstellung erfindungsgemäßer Sicherheitselemente nicht unbedingt erforderlich. Vielmehr können die Kennzeichnungen auch durch eine großflächige Maskenbelichtung oder durch andere Demetallisierungsverfahren, wie etwa Wasch-, Ätz- oder Öl-Ablation in die Aufzeichnungsschicht eingebracht werden.The combination of a viewing element grid with an optically variable recording layer produces an optically multivariable security element in which the first optically variable effect of the tilt image and the second optically variable effect of the recording layer interact with one another and visually enhance each other. By the further Characteristic that the recording layer comprises a reflection layer generated by a vacuum vapor method, a simple and inexpensive introduction of a desired tilting image is possible in the security element. The use of costly optically variable inks can thus be dispensed with. Although the use of relatively expensive laser technology for generating the markings is expedient, it is not absolutely necessary for the production of security elements according to the invention. Rather, the markings can also be introduced into the recording layer by a large-area mask exposure or by other demetallization methods, such as washing, etching or oil ablation.

Das vorgeschlagene Sicherheitselement verbindet so eine hohe Fälschungssicherheit mit einem ansprechenden visuellen Erscheinungsbild und einer einfachen und kostengünstigen Herstellung.The proposed security element thus combines a high degree of protection against counterfeiting with an attractive visual appearance and a simple and cost-effective production.

Bevorzugt enthält die optisch variable Aufzeichnungsschicht ein Dünnschichtelement mit Farbkippeffekt. Dabei weist das Dünnschichtelement mit Vorteil eine Reflexionsschicht, eine Absorberschicht und eine zwischen der Reflexionsschicht und der Absorberschicht angeordnete dielektrische Abstandsschicht auf. Die ersten und/ oder zweiten Kennzeichnungen sind in diesem Fall vorzugsweise durch Aussparungen in der Absorberschicht und/ oder der Reflexionsschicht und/ oder in der dielektrischen Abstandsschicht gebildet.The optically variable recording layer preferably contains a thin-film element with a color-shift effect. In this case, the thin-film element advantageously has a reflection layer, an absorber layer and a dielectric spacer layer arranged between the reflection layer and the absorber layer. The first and / or second markings in this case are preferably formed by recesses in the absorber layer and / or the reflection layer and / or in the dielectric spacer layer.

In einer Weiterbildung der Erfindung umfassen die ersten und/oder zweiten Kennzeichnungen jeweils erste und zweite Teilkennzeichnungen, wobei die ersten Teilkennzeichnungen durch Aussparungen nur in der Absorberschicht gebildet sind und die zweiten Teilkennzeichnungen durch Aussparungen sowohl in der Absorberschicht als auch in der Reflexionsschicht gebildet sind, so dass das Sicherheitselement in Aufsicht und Durchsicht unterschiedliche Kippbilder zeigt.In one development of the invention, the first and / or second markings respectively comprise first and second part markings, wherein the first part markings are formed by recesses only in the absorber layer and the second part markings are formed by cutouts are formed both in the absorber layer and in the reflection layer, so that the security element shows different tilting images in plan view and see through.

Die ersten und zweiten Kennzeichnungen können in allen Gestaltungen mit Laserstrahlung aus unterschiedlichen Richtungen durch das Betrachtungselementraster in die optisch variable Aufzeichnungsschicht eingebracht sein. Umfassen die Kennzeichnungen jeweils die oben genannten ersten und zweiten Teilkennzeichnungen, so sind diese mit Vorteil mit Laserstrahlung mit unterschiedlicher Laserenergie durch das Betrachtungselementraster hindurch in die optisch variable Aufzeichnungsschicht eingebracht.The first and second markings may be introduced into the optically variable recording layer from different directions through the viewing element grid in all designs with laser radiation. If the markings respectively comprise the abovementioned first and second part markings, then they are advantageously introduced into the optically variable recording layer with laser radiation having different laser energy through the viewing element grid.

In einer vorteilhaften Erfindungsvariante liegt die Reflexionsschicht der optisch variablen Aufzeichnungsschicht zumindest außerhalb der Kennzeichnungen vollflächig vor.In an advantageous variant of the invention, the reflection layer of the optically variable recording layer is present over the entire area at least outside the markings.

Bei einer anderen, ebenfalls vorteilhaften Erfindungsvariante ist die Reflexionsschicht der optisch variablen Aufzeichnungsschicht außerhalb der Kennzeichnungen zumindest in Teilbereichen gerastert und besteht in diesen Teilbereichen aus einer Vielzahl von Rasterelementen, die durch Aussparungen in einer im Wesentlichen opaken Schicht, oder durch im Wesentlichen opake, beabstandete Mustergrundelement gebildet sind. Die gerasterten Teilbereiche der Reflexionsschicht bilden mit Vorteil ein Motiv in Form von Mustern, Zeichen oder einer Codierung, das bei Betrachtung des Sicherheitselements in Durchsicht sichtbar wird.In another, likewise advantageous variant of the invention, the reflection layer of the optically variable recording layer outside the markings is rastered at least in partial regions and consists in these subregions of a multiplicity of raster elements which are formed by recesses in a substantially opaque layer, or by a substantially opaque, spaced pattern primitive are formed. The screened subregions of the reflection layer advantageously form a motif in the form of patterns, characters or an encoding that becomes visible when the security element is viewed through.

Die Rasterelemente der Reflexionsschicht können regelmäßig oder auch stochastisch angeordnet sein. Eine stochastische Anordnung kann sich insbesondere zur Vermeidung unerwünschter Moiré-Effekte anbieten. In einer vorteilhaften Ausgestaltung sind die Rasterelemente kreisförmig, vorzugsweise mit einem Durchmesser zwischen 10 µm und 100 µm, oder linienförmig, vorzugsweise mit einer Breite von 30 µm bis 70 µm ausgebildet.The raster elements of the reflection layer can be arranged regularly or stochastically. A stochastic arrangement may in particular be used to avoid unwanted moiré effects. In a Advantageous embodiment, the grid elements are circular, preferably with a diameter between 10 .mu.m and 100 .mu.m, or linear, preferably formed with a width of 30 microns to 70 microns.

Das Betrachtungselementraster ist mit Vorteil aus einer Mehrzahl von Mikrolinsen, insbesondere von Zylinderlinsen oder sphärischen Linsen, oder aus einer Mehrzahl von Mikrohohlspiegeln gebildet.The viewing element grid is advantageously formed from a plurality of microlenses, in particular of cylindrical lenses or spherical lenses, or of a plurality of micromill mirrors.

Die Reflexionsschicht besteht vorzugsweise aus einem Metall, insbesondere aus Aluminium. Es kommen jedoch auch andere Metalle, wie etwa Silber, Nickel, Kupfer, Eisen, Chrom, Gold, Legierungen aus diesen oder anderen Metallen oder weitere stark spiegelnde Materialien in Betracht. Vorzugsweise ist die optisch variable Aufzeichnungsschicht durch eine transparente Abstandsschicht von dem Betrachtungselementraster getrennt.The reflection layer is preferably made of a metal, in particular of aluminum. However, other metals, such as silver, nickel, copper, iron, chromium, gold, alloys of these or other metals or other highly reflective materials come into consideration. Preferably, the optically variable recording layer is separated from the viewing element grid by a transparent spacer layer.

Die Erfindung enthält auch ein Verfahren zum Herstellen eines optisch variablen Sicherheitselements zur Absicherung von Datenträgern bei dem

  • eine optisch variable Aufzeichnungsschicht mit einer im Vakuumdampfverfahren erzeugten Reflexionsschicht hergestellt wird,
  • in die optisch variable Aufzeichnungsschicht erste und zweite Kennzeichnungen eingebracht werden, und
  • die optisch variable Aufzeichnungsschicht im Abstand mit einem Betrachtungselementraster kombiniert wird, das bei Betrachtung aus unterschiedlichen ersten bzw. zweiten Betrachtungsrichtungen die ersten bzw. zweiten Kennzeichnungen zeigt, so dass die ersten und zweiten Kennzeichnungen ein Kippbild bilden.
The invention also includes a method for producing an optically variable security element for securing data carriers in the
  • an optically variable recording layer is produced with a reflection layer produced in the vacuum vapor method,
  • in the optically variable recording layer first and second markings are introduced, and
  • the optically variable recording layer is spaced apart with a viewing element grid which, when viewed from different first and second viewing directions, respectively, shows the first and second marks, respectively, such that the first and second marks form a tilt image.

In einer vorteilhaften Verfahrenvariante werden die ersten und zweiten Kennzeichnungen mit Laserstrahlung aus unterschiedlichen Richtungen durch das Betrachtungselementraster in die optisch variable Aufzeichnungsschicht eingebracht.In an advantageous variant of the method, the first and second markings are introduced with laser radiation from different directions through the viewing element grid into the optically variable recording layer.

Bei einer anderen, ebenfalls vorteilhaften Verfahrenvariante werden die ersten und zweiten Kennzeichnungen durch ein Wasch-, Ätz- oder Öl-Ablationsverfahren in die optisch variable Aufzeichnungsschicht eingebracht.In another, likewise advantageous variant of the method, the first and second markings are introduced into the optically variable recording layer by a washing, etching or oil ablation method.

Die Erfindung umfasst auch einen Datenträger, insbesondere einen Markenartikel, ein Wertdokument, eine Ausweiskarte und dergleichen, mit einem Sicherheitselement der beschriebenen Art. Besondere Vorteile bietet die Erfindung bei Datenträgern in Form von Karten, wie Kreditkarten, Bankkarten, Barzahlungskarten, Berechtigungskarten, Personalausweisen oder Passpersonalisierungsseiten.The invention also includes a data carrier, in particular a brand article, a document of value, an identity card and the like, with a security element of the type described. The invention offers particular advantages with data carriers in the form of cards, such as credit cards, bank cards, cash cards, authorization cards, identity cards or passport personalization pages ,

Weitere Ausführungsbeispiele sowie Vorteile der Erfindung werden nachfolgend anhand der Figuren erläutert, bei deren Darstellung auf eine maßstabs- und proportionsgetreue Wiedergabe verzichtet wurde, um die Anschaulichkeit zu erhöhen. Die verschiedenen Ausführungsbeispiele sind nicht auf die Verwendung in der konkret beschriebenen Form beschränkt, sondern können auch untereinander kombiniert werden.

Fig. 1
eine Aufsicht auf eine Identifikationskarte mit einem erfindungsgemäßen Sicherheitselement,
Fig. 2
schematisch einen Querschnitt der Karte der Fig. 1 entlang der Linie II-II,
Fig. 3
in (a) bis (c) drei Ausführungsbeispiele der Erfindung, bei denen die optisch variable Aufzeichnungsschicht jeweils durch ein Dünnschichtelement mit Farbkippeffekt gebildet ist,
Fig. 4
ein Sicherheitselement mit einer gerasterten Reflexionsschicht nach einem Ausführungsbeispiel der Erfindung,
Fig. 5
ein Sicherheitselement mit einer teilweise vollflächig und teilweise gerastert vorliegenden Reflexionsschicht nach einem anderen Ausführungsbeispiel der Erfindung, und
Fig. 6
ein Sicherheitselement mit einem Betrachtungselementraster aus einer Mehrzahl von Mikrohohlspiegeln nach einem weiteren Ausführungsbeispiel der Erfindung.
Further exemplary embodiments and advantages of the invention are explained below with reference to the figures, in the representation of which a representation true to scale and proportion has been dispensed with in order to increase the clarity. The various embodiments are not limited to use in the specific form described, but can also be combined with each other.
Fig. 1
a plan view of an identification card with a security element according to the invention,
Fig. 2
schematically a cross section of the map of Fig. 1 along the line II-II,
Fig. 3
in (a) to (c) three embodiments of the invention, in which the optically variable recording layer is formed by a thin-film element with a color shift effect,
Fig. 4
a security element with a screened reflection layer according to an embodiment of the invention,
Fig. 5
a security element with a partially full area and partially rasterized reflection layer according to another embodiment of the invention, and
Fig. 6
a security element with a viewing element grid of a plurality of hollow micro-mirrors according to a further embodiment of the invention.

Die Erfindung wird nun am Beispiel einer Identifikationskarte erläutert. Figur 1 zeigt dazu eine schematische Darstellung einer Identifikationskarte 10 im ID-1-Format, die mit einem erfindungsgemäßen Sicherheitselement 20 versehen ist. Figur 2 zeigt schematisch einen Querschnitt der Karte 10 im Bereich des Sicherheitselements 20 entlang der Linie II-II der Fig. 1.The invention will now be explained using the example of an identification card. 1 shows a schematic representation of an identification card 10 in the ID-1 format, which is provided with a security element 20 according to the invention. FIG. 2 schematically shows a cross section of the card 10 in the region of the security element 20 along the line II-II of Fig. 1 ,

Zur Absicherung weist die Karte 10 neben in herkömmlicher Weise aufgebrachten Daten 12 ein optisch variables Sicherheitselement 20 auf, das ein Kippbild aus ersten und zweiten Kennzeichnungen 24, 26 enthält, die in Fig. 1 schematisch durch die Buchstabenfolgen "A A A" bzw. "B B B" dargestellt sind. Anders als in der zeichnerischen Darstellung der Fig. 1 sind die Kennzeichnungen 24, 26 bei der Betrachtung der Karte 10 nicht gleichzeitig, sondern nur durch Verkippen der Karte 10 in einem jeweils unterschiedlichen Kippwinkel 40,42 erkennbar.For protection, the card 10 in addition to conventionally applied data 12 on an optically variable security element 20, which contains a tilting image of first and second markings 24, 26, which in Fig. 1 are schematically represented by the letters "AAA" and "BBB". Unlike in the graphic representation of Fig. 1 are the markings 24, 26 when viewing the card 10 not simultaneously, but only by tilting the card 10 in a different tilt angle 40,42 recognizable.

Die Kennzeichnungen 24, 26 des Kippbilds liegen in einer optisch variablen Aufzeichnungsschicht 30, beispielsweise einem Dünnschichtelement mit Farbkippeffekt vor. Die Aufzeichnungsschicht 30 enthält insbesondere eine durch ein Vakuumdampfverfahren erzeugte Reflexionsschicht, und erlaubt dadurch in einfacher und kostengünstiger Weise, ein Kippbild in die optisch variable Aufzeichnungsschicht einzubringen. Mit besonderem Vorteil stellt die Reflexionsschicht den Reflektor eines Dünnschichtelements mit Farbkippeffekt dar.The markings 24, 26 of the tilt image are present in an optically variable recording layer 30, for example a thin-film element with a color-shift effect. In particular, the recording layer 30 includes a reflection layer formed by a vacuum vapor method, thereby allowing a tilting image to be easily and inexpensively introduced into the optically variable recording layer. With special advantage, the reflection layer is the reflector of a thin-film element with a color-shift effect.

Das Sicherheitselement 20 enthält weiter ein von der Aufzeichnungsschicht 30 durch eine Abstandsschicht 28 getrenntes Betrachtungselementraster 32, das aus einer Mehrzahl paralleler Zylinderlinsen 34 besteht. Das Betrachtungselementraster 32 ist im Ausführungsbeispiel in Form eines horizontalen Linsenrasters ausgebildet, es kann jedoch in anderen Ausführungsformen beispielsweise auch in Form eines vertikalen Linsenrasters ausgebildet sein.The security element 20 further includes a viewing element grid 32 separated from the recording layer 30 by a spacer layer 28 and consisting of a plurality of parallel cylindrical lenses 34. The viewing element grid 32 is formed in the embodiment in the form of a horizontal lens grid, but it may be formed in other embodiments, for example, in the form of a vertical lenticular grid.

Die Dicke des Abstandsschicht 28 und die Brennweite der Zylinderlinsen 34 sind so aufeinander abgestimmt, dass die Kennzeichnungen 24, 26 der Aufzeichnungsschicht 30 etwa in der Brennebene der Linsen 34 liegt.The thickness of the spacer layer 28 and the focal length of the cylindrical lenses 34 are matched to one another such that the markings 24, 26 of the recording layer 30 lie approximately in the focal plane of the lenses 34.

In einer vorteilhaften Ausgestaltung werden die Kennzeichnungen 24, 26 nach dem Aufbringen des Linsenrasters 32 mittels eines gepulsten Infrarotlasers in die optisch variable Aufzeichnungsschicht 30 eingeschrieben. Dazu wird ein Laserstrahl aus verschiedenen Richtungen 40 bzw. 42 auf das Linsenraster 32 gerichtet. Die Zylinderlinsen 34 fokussieren den Laserstrahl je nach Bestrahlungsrichtung 40,42 auf unterschiedliche Teilbereiche der optisch variablen Aufzeichnungsschicht 30 und erzeugen dort durch die Wechselwirkung der Laserstrahlung mit dem Material der Aufzeichnungsschicht 30 die gewünschten Kennzeichnungen 24,26. Diese Wechselwirkung kann beispielsweise in einer lokalen Demetallisierung der Reflexionsschicht und/oder der Absorberschicht eines farbkippenden Dünnschichtelements bestehen, wie mit Bezug auf Fig. 3 weiter unten genauer erläutert.In an advantageous embodiment, the markings 24, 26 are written into the optically variable recording layer 30 after application of the lenticular screen 32 by means of a pulsed infrared laser. For this purpose, a laser beam from different directions 40 and 42 on the lenticular grid 32 directed. The cylindrical lenses 34 focus the laser beam depending on the direction of irradiation 40,42 on different portions of the optically variable recording layer 30 and generate there by the interaction of the laser radiation with the material of the recording layer 30, the desired markings 24,26. This interaction may, for example, consist in a local demetallization of the reflection layer and / or the absorber layer of a color-shifting thin-film element, as described with reference to FIG Fig. 3 explained in more detail below.

Bei der Betrachtung der fertigen Karte 10 sind dann aus der Betrachtungsrichtung 40 wegen der fokussierenden Wirkung der Zylinderlinsen 34 gerade die aus dieser Richtung eingeschriebenen Teilbereiche mit der Kennzeichnung 24 erkennbar und setzen sich für einen Betrachter zu den Buchstaben "A A A" zusammen. Entsprechend sind aus der Betrachtungsrichtung 42 die aus dieser Richtung eingeschriebenen Teilbereiche mit den Kennzeichnungen 26 erkennbar und setzen sich für einen Betrachter zu den Buchstaben "B B B" zusammen. Aus den flacheren Betrachtungsrichtungen 44,46 zeigen die Zylinderlinsen jeweils nur Teilbereiche der optisch variablen Aufzeichnungsschicht 30, die nicht durch Laserstrahlung modifiziert wurden und keine Kennzeichnungen enthalten.When viewing the finished card 10, the partial areas inscribed with this marking 24 can be seen from the viewing direction 40 because of the focusing effect of the cylindrical lenses 34 and, for a viewer, form the letters "A A A". Accordingly, from the viewing direction 42, the subregions inscribed in this direction can be recognized by the markings 26 and, for a viewer, are combined to form the letters "B B B". From the shallower viewing directions 44, 46, the cylindrical lenses each show only partial regions of the optically variable recording layer 30 which have not been modified by laser radiation and contain no markings.

Insgesamt weist das Sicherheitselement 20 somit bei der Betrachtung ein optisch doppelt variables Erscheinungsbild auf. Der erste optisch variable Effekt ist durch den Kippeffekt des Kippbilds 24, 26 gegeben: Wird die Karte von der Betrachtungsrichtung 44 über die Betrachtungsrichtungen 40 und 42 zur Betrachtungsrichtung 46 hin gekippt, so sieht der Betrachter zunächst die Aufzeichnungsschicht 30 ohne Kennzeichnung (Betrachtungsrichtung 44), aus Betrachtungsrichtung 40 wird die erste Kennzeichnung 24 und aus Betrachtungsrichtung 42 dann die zweite Kennzeichnung 26 sichtbar, bis aus der Betrachtungsrichtung 46 schließlich wieder nur die Aufzeichnungsschicht 30 ohne Kennzeichnungen zu erkennen ist.Overall, the security element 20 thus has an optically double-variable appearance when viewed. The first optically variable effect is given by the tilting effect of the tilting image 24, 26. If the card is tilted from the viewing direction 44 via the viewing directions 40 and 42 to the viewing direction 46, the viewer first sees the recording layer 30 without marking (viewing direction 44), from the viewing direction 40, the first marking 24 and from the viewing direction 42 then the second marking 26 is visible, up to Finally, only the recording layer 30 without markings can be recognized again in the viewing direction 46.

Der zweite optisch variable Effekt ist durch die optische Variabilität der Aufzeichnungsschicht 30 selbst gegeben und hängt von der Art der gewählten Aufzeichnungsschicht ab. Bevorzugt handelt es sich bei dem zweiten optisch variablen Effekt um einen betrachtungswinkelabhängigen Farbkippeffekt, der dem Betrachter einen sich mit der Betrachtungsrichtung ändernden Farbeindruck vermittelt. Der Farbeindruck der Aufzeichnungsschicht kann beim Kippen des Sicherheitselements beispielsweise von Grün nach Blau, von Blau nach Magenta oder von Magenta nach Grün wechseln.The second optically variable effect is given by the optical variability of the recording layer 30 itself and depends on the type of the selected recording layer. The second optically variable effect is preferably a viewing-angle-dependent color-shift effect that conveys to the viewer a color impression that changes with the viewing direction. The color impression of the recording layer can, for example, change from green to blue, blue to magenta, or magenta to green when the security element is tilted.

Figur 3 zeigt in (a) bis (c) drei Ausführungsbeispiele der Erfindung, bei denen die optisch variable Aufzeichnungsschicht jeweils durch ein Dünnschichtelement 50 mit Farbkippeffekt gebildet ist, das eine Reflexionsschicht 52, eine Absorberschicht 56 und eine zwischen der Reflexionsschicht und der Absorberschicht angeordnete dielektrische Abstandsschicht 54 aufweist. FIG. 3 shows in (a) to (c) three embodiments of the invention, in which the optically variable recording layer is formed by a thin-film element 50 with color shift effect, which includes a reflective layer 52, an absorber layer 56 and a dielectric spacer layer 54 between the reflective layer and the absorber layer having.

Bei dem Ausführungsbeispiel der Fig. 3(a) sind die ersten und zweiten Kennzeichnungen 24, 26 jeweils durch Aussparungen 66 in der Absorberschicht 56 des Dünnschichtelements 50 gebildet. Derartige Aussparungen 66 können beispielsweise durch Laserbeaufschlagung des Dünnschichtelements 50 mit relativ geringer Laserenergie erzeugt werden. Bei Betrachtung des Sicherheitselements der Fig. 3(a) in Aufsicht erscheinen die demetallisierten Aussparungen 66 der Absorberschicht 56 ohne Farbkippeffekt mit der Farbe der Reflexionsschicht 52, während die außerhalb der Aussparungen 66 liegenden Bereiche des Dünnschichtelements 50 den vorgegebenen Farbkippeffekt zeigen.In the embodiment of the Fig. 3 (a) The first and second markings 24, 26 are each formed by recesses 66 in the absorber layer 56 of the thin-film element 50. Such recesses 66 can be generated, for example, by laser application of the thin-film element 50 with relatively low laser energy. Looking at the security element of Fig. 3 (a) In plan view, the demetallized recesses 66 of the absorber layer 56 appear with no color shift effect with the color of the reflective layer 52, while the lying outside of the recesses 66 areas of the thin-film element 50 show the predetermined color shift effect.

Beispielsweise können sich die durch die demetallisierten Aussparungen 66 gebildeten Kennzeichnungen 24, 26 bei der Betrachtung des Sicherheitselements in Aufsicht aus der Betrachtungsrichtung 40 für einen Betrachter zu silbrig glänzenden Buchstaben "A A A" und aus Betrachtungsrichtung 42 zu silbrig glänzenden Buchstaben "B B B" zusammensetzen, jeweils vor einem farbkippenden Hintergrund. Aus anderen Betrachtungsrichtungen 44, 46 sind weder die Buchstaben "A A A" der Kennzeichnung 24 noch die Buchstaben "B B B" der Kennzeichnung 26, sondern nur der farbkippende Hintergrund des Dünnschichtelements 50 erkennbar.For example, the markings 24, 26 formed by the demetallized recesses 66 when viewing the security element in plan view from the viewing direction 40 may be silvery glossy letter "AAA" and viewing direction 42 silver shiny letter "BBB" a color-shifting background. From other viewing directions 44, 46 neither the letters "A A A" of the marking 24 nor the letters "B B B" of the marking 26, but only the color-shifting background of the thin-film element 50 can be seen.

Das Sicherheitselement der Fig. 3(a) ist auf Betrachtung in Aufsicht ausgelegt, und kann insbesondere in einem opaken Bereich einer Karte 10 oder eines anderen Datenträgers angeordnet sein.The security element of Fig. 3 (a) is designed for viewing in supervision, and in particular may be arranged in an opaque area of a card 10 or other data carrier.

Bei dem Ausführungsbeispiel der Fig. 3(b) sind die ersten und zweiten Kennzeichnungen 24, 26 jeweils durch Aussparungen 62 sowohl in der Absorberschicht 56 als auch in der Reflexionsschicht 52 des Dünnschichtelements 50 gebildet. Derartige Aussparungen 62 können beispielsweise durch Laserbeaufschlagung des Dünnschichtelements 50 mit relativ hoher Laserenergie erzeugt werden, so dass nicht nur die Absorberschicht 56, sondern auch die Reflexionsschicht 52 bereichsweise demetallisiert wird.In the embodiment of the Fig. 3 (b) For example, the first and second markings 24, 26 are respectively formed by recesses 62 in both the absorber layer 56 and the reflective layer 52 of the thin film element 50. Such recesses 62 can be generated, for example, by laser application of the thin-film element 50 with relatively high laser energy, so that not only the absorber layer 56 but also the reflection layer 52 is demetallized in certain areas.

Bei Betrachtung des Sicherheitselements der Fig. 3(b) in Aufsicht erscheinen die demetallisierten Aussparungen 62 der Absorberschicht 56 und der Reflexionsschicht 52 farblos, während die außerhalb der Aussparungen 62 liegenden Bereiche des Dünnschichtelements den vorgegebenen Farbkippeffekt zeigen. Da die Aussparungen 62 sich auch durch die Reflexionsschicht 52 erstrecken, sind sie nicht nur in Aufsicht, sondern auch in Durchsicht sichtbar und erscheinen dann hell vor dem dunklen Hintergrund der opaken Reflexionsschicht 52.Looking at the security element of Fig. 3 (b) In plan view, the demetallized recesses 62 of the absorber layer 56 and the reflection layer 52 appear colorless, while the areas of the thin-film element lying outside of the recesses 62 show the predetermined color-shift effect. Since the recesses 62 also extend through the reflective layer 52, they are visible not only in plan view, but also in view and then appear bright against the dark background of the opaque reflection layer 52.

Beispielsweise können sich die durch die demetallisierten Aussparungen 62 gebildeten Kennzeichnungen 24, 26 bei der Betrachtung des Sicherheitselements aus der Betrachtungsrichtung 40 für einen Betrachter zu den Ziffern "111" und aus Betrachtungsrichtung 42 zu den Ziffern "2 2 2" zusammensetzen. In Aufsicht erscheinen die Ziffern farblos vor dem farbkippenden Hintergrund des Dünnschichtelements 50, im Durchlicht erscheinen sie hell vor dem dunklen Hintergrund der Reflexionsschicht 52.For example, the markings 24, 26 formed by the demetallized recesses 62 when viewing the security element from the viewing direction 40 for an observer may be composed of the numbers "111" and from the viewing direction 42 to the numbers "2 2 2". In supervision, the numbers appear colorless in front of the color-shifting background of the thin-film element 50; in transmitted light they appear bright against the dark background of the reflection layer 52.

Das Sicherheitselement der Fig. 3(b) ist auf Betrachtung sowohl in Aufsicht als auch in Durchsicht ausgelegt, und kann insbesondere in einem transparenten oder transluzenten Fensterbereich oder über einer Öffnung einer Karte 10 oder eines anderen Datenträgers angeordnet sein.The security element of Fig. 3 (b) is designed to be viewed both in plan view and in transparency, and in particular may be arranged in a transparent or translucent window area or over an opening of a card 10 or other data carrier.

Durch eine geeignete Variation der Laserparameter, beispielsweise der Laserenergie, lassen sich auch zwei verschiedene Kippbilder für Betrachtung in Aufsicht und Durchsicht erzeugen, wie in Fig. 3(c) illustriert. Dort wurden zunächst durch Beaufschlagung des Dünnschichtelements mit geringer Laserenergie Aussparungen 66 nur in der Absorberschicht 56 des Dünnschichtelements 50 erzeugt, die jeweils erste Teilkennzeichnungen 24-A und 26-A der Kennzeichnungen 24, 26 bilden. Durch Beaufschlagung des Dünnschichtelements mit höherer Laserenergie wurden weiter Aussparungen 62 sowohl in der Absorberschicht 56 als auch in der Reflexionsschicht 52 des Dünnschichtelements 50 erzeugt, die jeweils zweite Teilkennzeichnungen 24-B und 26-B der Kennzeichnungen 24, 26 bilden.By a suitable variation of the laser parameters, for example the laser energy, it is also possible to produce two different tilt images for viewing in supervision and viewing, as in Fig. 3 (c) illustrated. There, first, by applying the thin-film element with low laser energy, recesses 66 were produced only in the absorber layer 56 of the thin-film element 50, which respectively form first partial identifications 24-A and 26-A of the markings 24, 26. Further, by applying the laser element to the thin-film element, recesses 62 were formed in both the absorber layer 56 and the reflective layer 52 of the thin-film element 50, respectively forming second indicia 24-B and 26-B of the indicia 24, 26.

Bei Betrachtung des Sicherheitselements der Fig. 3(c) in Aufsicht erscheinen die demetallisierten Aussparungen 66 der Absorberschicht 56 ohne Farbkippeffekt mit der Farbe der Reflexionsschicht 52, während die demetallisierten Aussparungen 62 der Absorberschicht 56 und der Reflexionsschicht 52 farblos erscheinen. Die außerhalb der Aussparungen 62 und 66 liegenden Bereiche des Dünnschichtelements zeigen den vorgegebenen Farbkippeffekt. Bei Betrachtung in Durchsicht sind hingegen nur die Aussparungen 62, die sich auch durch die Reflexionsschicht 52 erstrecken, sichtbar, wie bei Fig. 3(b) beschrieben. Das Sicherheitselement der Fig. 3(c) zeigt somit in Aufsicht und Durchsicht zwei unterschiedliche Kippbilder.Looking at the security element of Fig. 3 (c) In plan view, the demetallized recesses 66 of the absorber layer 56 without color shift effect appear with the color of the reflective layer 52, while the demetallized recesses 62 of the absorber layer 56 and the reflective layer 52 appear colorless. The lying outside of the recesses 62 and 66 areas of the thin-film element show the predetermined color shift effect. On the other hand, when viewed in phantom, only the recesses 62 that also extend through the reflective layer 52 are visible, as in FIG Fig. 3 (b) described. The security element of Fig. 3 (c) thus shows in supervision and review two different tilt images.

Beispielsweise können sich die durch die Aussparungen 66 gebildeten Teilkennzeichnungen 24-A, 26-A aus der Betrachtungsrichtung 40 zu den Buchstaben "A A A" und aus der Betrachtungsrichtung 42 zu den Buchstaben "B B B" ergänzen, und es können sich die durch die durchgehenden Aussparungen 62 gebildeten Teilkennzeichnungen 24-B, 26-B aus der Betrachtungsrichtung 40 zu den Ziffern "111" und aus der Betrachtungsrichtung 42 zu den Ziffern "2 2 2 "ergänzen.For example, the part markings 24-A, 26-A formed by the recesses 66 may complement the letters "AAA" from the viewing direction 40 and the letters "BBB" from the viewing direction 42, and the through-cutouts 62 from the viewing direction 40 to the numbers "111" and from the viewing direction 42 to the numbers "2 2 2".

In Aufsicht sieht der Betrachter dann die durch die Aussparungen 66 gebildeten Teilkennzeichnungen 24-A, 26-A mit dem Farbeindruck der Reflexionsschicht 52 silbrig glänzend und die durch die durchgehenden Aussparungen 62 gebildeten Teilkennzeichnungen 24-B, 26-B farblos, nimmt also beim Kippen des Sicherheitselements ein Kippbild "A1 A1 A1" nach "B2 B2 B2" vor einem farbkippenden Hintergrund wahr, wobei die Buchstaben jeweils silbrig glänzend und die Ziffern farblos erscheinen.In supervision, the viewer sees then formed by the recesses 66 part markings 24-A, 26-A with the color impression of the reflective layer 52 silvery shiny and formed by the continuous recesses 62 part markings 24-B, 26-B colorless, so takes on tilting of the security element, a tilting picture "A1 A1 A1" to "B2 B2 B2" before a farbkippenden background true, the letters each appear silvery shiny and the numbers appear colorless.

Im Durchsicht sind die nur in der Absorberschicht 56 vorliegenden Aussparungen 66 nicht zu erkennen, während die durch die Aussparungen 62 gebildeten Teilkennzeichnungen 24-B, 26-B hell vor dem dunklen Hintergrund der Reflexionsschicht 52 erscheinen. Der Betrachter nimmt in Durchsicht also beim Kippen des Sicherheitselements ein Kippbild heller Ziffern "111" nach "2 2 2" vor dunklem Hintergrund wahr.When viewed through the recesses 66 are present only in the absorber layer 56 can not be seen, while formed by the recesses 62 Part markings 24-B, 26-B appear bright against the dark background of the reflective layer 52. The observer therefore perceives a tilted image of bright numbers "111" after "2 2 2" against a dark background when the security element is tilted.

Die Reflexionsschicht der optisch variablen Aufzeichnungsschicht kann außerhalb der Kennzeichnungen nicht nur vollflächig vorliegen, wie in den Figuren 2 und 3 gezeigt, sondern kann dort auch zumindest in Teilbereichen gerastert sein.The reflective layer of the optically variable recording layer can not only be present over the full area outside the markings, as in US Pat Figures 2 and 3 but can also be screened there at least in some areas.

Figur 4 zeigt dazu ein Sicherheitselement 70 mit einer optisch variablen Aufzeichnungsschicht in Form eines farbkippenden Dünnschichtelements 72 mit einer gerasterten Reflexionsschicht 74, einer Absorberschicht 56 und einer dielektrischen Abstandsschicht 54. Die ersten und zweiten Kennzeichnungen 24, 26 sind, ähnlich wie bei dem Ausführungsbeispiel der Fig. 3(b), durch Aussparungen 76 sowohl in der Absorberschicht 56 als auch in der Reflexionsschicht 72 des Dünnschichtelements 70 gebildet. FIG. 4 shows a security element 70 with an optically variable recording layer in the form of a color-shifting thin-film element 72 with a rastered reflection layer 74, an absorber layer 56 and a dielectric spacer layer 54. The first and second markings 24, 26 are, similar to the embodiment of Fig. 3 (b) , formed by recesses 76 both in the absorber layer 56 and in the reflective layer 72 of the thin-film element 70.

Im Unterschied zum Ausführungsbeispiel der Fig. 3(b) ist die Reflexionsschicht 74 außerhalb der Kennzeichnungen 24, 26 gerastert und besteht aus einer Vielzahl von beabstandeten Rasterelementen 78. Das Sicherheitselement 70 ist daher in Durchsicht auch außerhalb der Kennzeichnungen nicht opak, sondern schwach transparent. Beispielsweise können die Rasterelemente 78 kreisförmig mit einem Durchmesser zwischen 10 µm und 100 µm ausgebildet sein. Die Rasterung kann so ausgeführt sein, dass die Rasterelemente 78 zwar richtungsabhängig sichtbar sind, dass aber gemittelt über mehrere Linsendurchmesser ein richtungsunabhängiger Transmissionsgrad der Reflexionsschicht 74 vorliegt. Dabei hat sich eine stochastische Verteilung der Rasterelemente 78 als vorteilhaft herausgestellt, um unerwünschte Moiré-Effekte zu vermeiden.In contrast to the embodiment of Fig. 3 (b) For example, the reflection layer 74 is scanned outside the markings 24, 26 and consists of a multiplicity of spaced raster elements 78. The security element 70 is therefore not opaque in transparency, even outside the markings, but weakly transparent. For example, the raster elements 78 may be formed in a circle with a diameter between 10 .mu.m and 100 .mu.m. The rasterization can be carried out in such a way that the raster elements 78 are visible in a direction-dependent manner, but that averaged over several lens diameters, a direction-independent transmittance of the reflection layer 74 is present. It has a stochastic distribution the raster elements 78 are found to be advantageous in order to avoid unwanted moiré effects.

In einer solchen Ausgestaltung kann das Sicherheitselement auch mit weiteren, beispielsweise gedruckten Aufsichts-/Durchsichts-Merkmalen kombiniert werden, etwa einer in Durchsicht verschwindenden Druckinformation. Letztere kann auch auf der Rückseite des Sicherheitselements vorgesehen sein.In such an embodiment, the security element can also be combined with further, for example printed supervisory / review features, such as a vanishing in print information. The latter can also be provided on the back of the security element.

Die Reflexionsschicht der optisch variablen Aufzeichnungsschicht kann auch teilweise vollflächig und teilweise gerastert vorliegen. Figur 5 zeigt dazu ein Sicherheitselement 80, das weitgehend wie das Sicherheitselement 70 der Fig. 4 aufgebaut ist. Im Unterschied zu diesem enthält die Aufzeichnungsschicht 72 des Sicherheitselements 80 eine Reflexionsschicht 82, die in ersten Teilbereichen 84 vollflächig und in zweiten Teilbereichen 86 gerastert vorliegt. Die gerasterten Teilbereiche 86 bilden dabei durch ihre Umrissform ein Motiv, das aufgrund der schwachen Transparenz der gerasterten Teilbereiche 86 in Durchsicht vor dem opaken Hintergrund der vollflächigen Teilbereiche 84 sichtbar wird. Das Sicherheitselement 80 weist somit zusätzlich zu dem optisch doppelt variablen Erscheinungsbild einen Aufsicht-/Durchsicht-Effekt auf, nämlich das im Durchlicht erscheinende Motiv der gerasterten Teilbereiche 86. Durch unterschiedliche Größe oder Abstände der Rasterelemente 78 kann dieses Motiv auch mit einer Mehrzahl an Graustufen ausgebildet werden.The reflection layer of the optically variable recording layer can also be partly full-surface and partially rastered. FIG. 5 shows a security element 80, which largely as the security element 70 of Fig. 4 is constructed. In contrast to this, the recording layer 72 of the security element 80 contains a reflection layer 82, which is present in the first partial regions 84 in a rasterized manner and in second partial regions 86 in a rasterized manner. The rasterized subregions 86 form a motif through their outline shape, which, due to the weak transparency of the rastered subregions 86, becomes visible in the light of the opaque background of the full-surface subregions 84. The security element 80 thus has, in addition to the optically doubly variable appearance, a supervisory / see-through effect, namely the motif of the screened subareas 86 appearing in the transmitted light. As a result of different sizes or spacings of the raster elements 78, this motif can also be formed with a plurality of gray levels become.

Die Kennzeichnungen 24, 26 können anstatt der beschriebenen Laserbeaufschlagung durch die Linsen 34 hindurch auch auf andere Weise in die Aufzeichnungsschicht eingebracht werden, beispielsweise durch eine Demetallisierung einer Absorber- oder Reflexionsschicht durch ein Wasch-, Ätz, oder Öl-Ablationsverfahren. Auch kann eine optische Ablation beispielsweise dadurch erfolgen, dass die Aufzeichnungsschicht über eine hoch aufgelöste Maske mit einer einzigen Belichtung strukturiert wird.The markings 24, 26 can also be introduced into the recording layer in a different manner instead of the described laser application through the lenses 34, for example by demetallization of an absorber or reflection layer by a washing, etching, or Oil ablation. Also, optical ablation may be accomplished, for example, by patterning the recording layer over a high resolution mask with a single exposure.

Als Betrachtungselemente kommen zusätzlich zu den bisher beschriebenen Linsen 34 auch Mikrohohlspiegel 92 in Betracht. Mit Bezug auf Fig. 6 enthält ein Sicherheitselement 90 ein Raster aus einer Mehrzahl von Mikrohohlspiegeln 92, die über eine Abstandsschicht 28 von der optisch variablen Aufzeichnungsschicht 72 getrennt sind.As viewing elements, in addition to the previously described lenses 34, micro-hollow mirrors 92 may also be considered. Regarding Fig. 6 For example, a security element 90 comprises a grid of a plurality of hollow micro-mirrors 92 which are separated from the optically-variable recording layer 72 by a spacer layer 28.

Die Aufzeichnungsschicht 72 muss in dieser Erfindungsvariante zumindest teilweise transparent sein, was beispielsweise durch die Verwendung einer gerasterten Reflexionsschicht 74 sichergestellt werden kann. Ferner ist die Aufzeichnungsschicht 72 so anzuordnen, dass ihr optisch variabler Effekt von der Unterseite 96, also der den Mikrohohlspiegeln 92 zugewandten Seite sichtbar ist, wie in Fig. 6 gezeigt.The recording layer 72 must be at least partially transparent in this variant of the invention, which can be ensured, for example, by the use of a screened reflection layer 74. Furthermore, the recording layer 72 is to be arranged such that its optically variable effect is visible from the underside 96, that is to say the side facing the hollow micro mirrors 92, as in FIG Fig. 6 shown.

In einer weiteren, nicht dargestellten Erfindungsvariante ist der optisch variable Effekt von der OberseiteIn a further variant of the invention, not shown, the optically variable effect is from the top side

Auch bei der Erfindungsvariante mit Mikrohohlspiegeln 92 kann in der oben beschriebenen Weise ein Motiv in die optisch variable Aufzeichnungsschicht 72 mittels Laserbelichtung einbeschrieben werden, oder die Aufzeichnungsschicht 72 kann durch ein Wasch-, Ätz, oder Öl-Ablationsverfahren strukturiert werden. Weiter kann der Reflektor 94 der Mikrohohlspiegel 92 als optisch variable Schicht ausgeführt werden und kann insbesondere durch ein farbkippendes Dünnschichtsystem gebildet sein. Der Reflektor 94 der Mikrohohlspiegel 92 kann auch teilweise oder vollständig gerastert sein, um Durchsichtseffekte zu erzeugen. Für die Rasterung des Reflektors 94 bestehen dabei dieselben Möglichkeiten wie für die gerasterte Reflexionsschicht 74, so dass insoweit auf die obigen Ausführungen verwiesen wird. Insbesondere können die gerasterten Bereiche des Reflektors 94 ein Motiv bilden und/ oder zusätzliche auf der Rückseite des Sicherheitselements 90 angebrachte Sicherheitsmerkmale sichtbar machen.In the variant of the invention with hollow micro-mirrors 92 as well, a motif can be inscribed in the optically variable recording layer 72 by means of laser exposure as described above, or the recording layer 72 can be structured by a washing, etching, or oil ablation process. Further, the reflector 94 of the micro-cavity mirror 92 can be designed as an optically variable layer and can be formed in particular by a color-shifting thin-film system. The reflector 94 of the micro-cavities 92 may also be partially or completely scanned to produce see-through effects. For the screening of the reflector 94 exist the same options as for the screened reflection layer 74, so that reference is made to the above statements. In particular, the screened areas of the reflector 94 may form a motif and / or make additional security features attached to the back of the security element 90 visible.

In weiteren Ausgestaltungen können die Kippbilder der Aufzeichnungsschicht einen Vergrößerungs- und/ oder Tiefeneffekt zeigen, wie von Moire-Magnifier-Systemen bekannt. Die Erzeugung und Eigenschaften solcher mikrooptischer Darstellungsanordnungen sind beispielsweise in den internationalen Anmeldungen WO 2009/00528 A1 und WO 2006/087138 A1 beschrieben. Bei der Betrachtung eines erfindungsgemäßen Sicherheitselements mit Moire-Vergrößerungseffekt ist dann unter dem jeweiligen Kippwinkel eine Kennzeichnung zu sehen, die je nach Ausführung vor oder hinter der Ebene des Sicherheitselements zu schweben scheint.In further embodiments, the tilt images of the recording layer may exhibit an enlargement and / or depth effect as known from Moire Magnifier systems. The generation and properties of such micro-optical representational arrangements are, for example, in the international applications WO 2009/00528 A1 and WO 2006/087138 A1 described. When considering a security element according to the invention with moiré magnification effect, a marking is then to be seen below the respective tilt angle which, depending on the embodiment, seems to float in front of or behind the plane of the security element.

Claims (12)

  1. An optically variable security element for safeguarding data carriers having a shift image consisting of first and second markings which are recognizable from different first or second viewing directions, wherein the first and second markings of the shift image are present in an optically variable recording layer which has a reflective layer produced by a vacuum deposition method, wherein the security element contains a viewing element grid spaced from the recording layer and showing the first or second markings upon viewing from the first or second viewing direction, wherein the optically variable recording layer contains a thin-film element having a color-shift effect, and wherein the thin-film element has a reflective layer, an absorber layer and a dielectric spacer layer arranged between the reflective layer and the absorber layer, characterized in that the first and/or second markings are formed by gaps in the absorber layer and/or in the reflective layer and/or in the dielectric spacer layer and respectively comprise first and second partial markings, wherein the first partial markings are formed by gaps only in the absorber layer and the second partial markings are formed by gaps both in the absorber layer and in the reflective layer, so that the security element shows different shift images in plan view and transmission view, that the reflective layer of the optically variable recording layer is gridded outside the markings at least in partial regions and consists in said partial regions of a multiplicity of grid elements which are formed by gaps in a substantially opaque layer, or by substantially opaque, spaced pattern base elements, and that the gridded partial regions form a motif in the form of patterns, characters or an encoding.
  2. The security element according to claim 1, characterized in that the first and second markings are incorporated into the optically variable recording layer through the viewing element grid by laser radiation from different directions.
  3. The security element according to at least one of claims 1 to 2, characterized in that the first and second partial markings are incorporated into the optically variable recording layer through the viewing element grid by laser radiation with different laser energy.
  4. The security element according to at least one of claims 1 to 3, characterized in that the reflective layer of the optically variable recording layer is present over the full area at least outside the markings.
  5. The security element according to at least one of claims 1 to 4, characterized in that the grid elements are arranged stochastically.
  6. The security element according to at least one of claims 1 to 5, characterized in that the grid elements are configured to be circular, preferably with a diameter between 10 µm and 100 µm, or line-shaped, preferably with a width of 30 µm to 70 µm
  7. The security element according to at least one of claims 1 to 6, characterized in that the viewing element grid is formed from a plurality of microlenses, in particular cylindrical lenses or spherical lenses, or from a plurality of concave micromirrors.
  8. The security element according to at least one of claims 1 to 7, characterized in that the optically variable recording layer is separated from the viewing element grid by a transparent spacer layer.
  9. A method for manufacturing an optically variable security element according to at least one of claims 1 to 8, wherein
    - an optically variable recording layer is manufactured with a reflective layer produced by vacuum deposition,
    - first and second markings are incorporated into the optically variable recording layer,
    - the optically variable recording layer is combined in a spaced manner with a viewing element grid which, upon viewing from different first or second viewing directions, shows the first or second markings, so that the first and second markings form a shift image,
    - the optically variable recording layer is manufactured with a thin-film element having a color-shift effect, wherein the thin-film element has a reflective layer, an absorber layer and a dielectric spacer layer arranged between the reflective layer and the absorber layer; characterized in that
    - the first and/or second markings are formed by gaps in the absorber layer and/or in the reflective layer and/or in the dielectric spacer layer and respectively comprise first and second partial markings,
    - the first partial markings are formed by gaps only in the absorber layer and the second partial markings are formed by gaps both in the absorber layer and in the reflective layer, so that the security element shows different shift images in plan view and transmission view,
    - the reflective layer of the optically variable recording layer is gridded outside the markings at least in partial regions and is formed in said partial regions from a multiplicity of grid elements which are formed by gaps in a substantially opaque layer, or by substantially opaque, spaced pattern base elements, and
    - the gridded partial regions are formed by a motif in the form of patterns, characters or an encoding.
  10. The method according to claim 9, characterized in that the first and second markings are incorporated into the optically variable recording layer through the viewing element grid by laser radiation from different directions.
  11. The method according to claim 9, characterized in that the first and second markings are incorporated into the optically variable recording layer by a washing, etching, or oil ablation method.
  12. A data carrier, in particular security paper or value document, having a security element according to any of claims 1 to 8.
EP11746165.7A 2010-07-21 2011-07-18 Optically variable security element with tilt image Active EP2595817B1 (en)

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DE102010031713A DE102010031713A1 (en) 2010-07-21 2010-07-21 Optically variable security element with tilting image
PCT/EP2011/003587 WO2012010286A1 (en) 2010-07-21 2011-07-18 Optically variable security element having a flip image

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DE102007029203A1 (en) 2007-06-25 2009-01-08 Giesecke & Devrient Gmbh security element
EP2109084A1 (en) * 2008-04-11 2009-10-14 HID Global GmbH A method of checking the authenticity of a document with a co-laminated fabric layer inside
DE102008028187A1 (en) * 2008-06-12 2009-12-17 Giesecke & Devrient Gmbh Security element with optically variable element.
DE102008053099A1 (en) * 2008-10-24 2010-04-29 Giesecke & Devrient Gmbh Security element with pressure-sensitive appearance
DE102009006301A1 (en) * 2009-01-27 2010-07-29 Giesecke & Devrient Gmbh Optically variable security element

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BR112013000573A2 (en) 2016-07-05
DE102010031713A1 (en) 2012-01-26
US9987875B2 (en) 2018-06-05
CA2803191C (en) 2015-04-07
EP2595817A1 (en) 2013-05-29
WO2012010286A1 (en) 2012-01-26
BR112013000573A8 (en) 2017-10-10
US20130193679A1 (en) 2013-08-01
CA2803191A1 (en) 2012-01-26
BR112013000573B1 (en) 2020-04-14

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