EP2588276A1 - Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement - Google Patents
Sicherheitselement sowie wertdokument mit einem solchen sicherheitselementInfo
- Publication number
- EP2588276A1 EP2588276A1 EP11730217.4A EP11730217A EP2588276A1 EP 2588276 A1 EP2588276 A1 EP 2588276A1 EP 11730217 A EP11730217 A EP 11730217A EP 2588276 A1 EP2588276 A1 EP 2588276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- security element
- motif
- micro
- element according
- arrangement
- 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.)
- Granted
Links
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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
- B42D15/00—Printed matter of special format or style not otherwise provided for
-
- 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
- B42D25/324—Reliefs
-
- 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
- B42D25/328—Diffraction gratings; Holograms
-
- 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
- B42D25/342—Moiré effects
-
- 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
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- 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
- B42D25/355—Security threads
-
- 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
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- 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
- B42D25/45—Associating two or more layers
-
- B42D2035/44—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F7/00—Designs imitating three-dimensional effects
Definitions
- the present invention relates to a security element for a security paper, value document or the like, as well as a value document with such a security element.
- Items to be protected are often provided with a security element which allows verification of the authenticity of the item and at the same time serves as protection against unauthorized reproduction.
- Items to be protected include, for example, security papers, identity and value documents (such as bank notes, chip cards, passports, identification cards, identity cards, shares, attachments, certificates, vouchers, checks, tickets, credit cards, health cards, etc.) as well as product security elements (such as labels, Seal, packaging, etc.).
- identity and value documents such as bank notes, chip cards, passports, identification cards, identity cards, shares, attachments, certificates, vouchers, checks, tickets, credit cards, health cards, etc.
- product security elements such as labels, Seal, packaging, etc.
- security elements comprising a micro-optical display arrangement in the form of a moiré magnification arrangement, e.g. in WO 2007/076952 A2, or in the form of a modulo magnification arrangement, e.g. in WO 2009/000528 AI, to produce a three-dimensional image impression that is memorable.
- a security element is difficult to imitate because the micro-optical structure is difficult to copy or replicate.
- counterfeiters since counterfeiters always work to fake known security elements, there is a need for security elements with increased security against counterfeiting.
- the object of the present invention is to provide a security element for a security paper, value document or the like which is more difficult to copy or simulate.
- the object is achieved by a security element for a security paper, document of value or the like, having a carrier which has a motif area which provides a visually perceptible motif with a first and a second motif part, the motif area being a first microoptical representation arrangement
- a security element for a security paper, document of value or the like having a carrier which has a motif area which provides a visually perceptible motif with a first and a second motif part, the motif area being a first microoptical representation arrangement
- Motive part viewing angle dependent presents at least two different images
- a second micro-optical representation arrangement comprises, which presents a reflective surface as the second part of the subject, which appears curved relative to the actual macroscopic spatial form of the second micro-optical representation arrangement.
- the motif region has the first and second motif part, which comprises different micro-optical representation arrangements, which as a rule make distinctly different demands on their production processes, in particular on origination. This means that a counterfeiter must master both manufacturing processes, which increases the security against counterfeiting.
- the security element according to the invention has a very high optical attractiveness and thus a particularly high recognition value.
- the user if the security elements are, for example, a security element for a banknote, preferably checks the banknote for authenticity on the basis of this attractive security element.
- the requirements for a counterfeiter are increased since he has to mimic or duplicate both high quality micro-optical representations, which is very expensive to produce a counterfeit that is not recognized as such by the user.
- the two motif parts are preferably arranged (spatially) coherently, so that the images presented by both micro-optical representational arrangements can be perceived by the user as a single motif.
- the contiguous arrangement is understood in particular to mean that the distance between the two motif parts is preferably less than 1 mm and particularly preferably less than 0.2 mm. Furthermore, both subject parts can be directly adjacent to each other.
- the security element can preferably be designed such that one of the two motif parts at least partially surrounds the other of the two motif parts.
- the surrounding motif part can completely surround the other motif part in the manner of a frame.
- a frame or the arrangement of the first and second part of the motif at very close intervals increases the security against forgery in particular when the two neuro-optical representations have to be produced with different origination methods and / or can not be coined at the same time.
- a forger then not only has to master two origination and / or embossing processes, but also has to position the motifs produced in exact registration with each other. In particular, nested subject parts are then extremely difficult to fake.
- the security element according to the invention can advantageously be designed such that, depending on the viewing and / or illumination situation, the representation of one of the neuro-optical representation arrangements dominates, while the representations of the first or second micro-optical representation arrangement in a different viewing or illumination situation become an overall motif complete.
- the first micro-optical representation arrangement provides a representation independent of the illumination direction at a constant viewing angle, while the representation of the second neuro-optical representation arrangement varies depending on the illumination direction.
- the security element may also be designed such that one of the two micro-optical representation arrangements represents a background, in front of which the other of the two neuro-optical representation arrangements Object shows, so that overall a three-dimensional overall view is perceptible as a motif.
- the first micro-optical representation arrangement can present the at least two different images as a function of the viewing angle such that the images overlap at least in regions and / or are nested one inside the other.
- the first microoptical representation arrangement can, with particular advantage, present two different views of the same object as the at least two different images.
- the at least two different images can be presented in such a way that a viewer obtains a stereographic representation of an object with absolute depth information.
- the object is apparently positioned in front of or behind the carrier, wherein the apparent distance from the carrier and thus the depth information is determined by the formation of the first micro-optical representation arrangement.
- the first micro-optical representation arrangement can have a hologram.
- the hologram can be, for example, an embossed hologram. In particular, it may be a volume hologram. Furthermore, the hologram may conventionally be a directly exposed hologram or even a computer-generated stereogram.
- the first micro-optical representation arrangement can comprise microstructures and microimage elements in order to image the microstructures in an enlarged manner.
- the first neuro-optical representation arrangement can be designed as a microlens tilt image, as a moiré magnification arrangement or as a modulo magnification arrangement.
- the microimage elements can be designed as focusing elements. They can be designed as one-dimensionally focusing elements (for example cylindrical lenses or corresponding hollow micromirrors) or else as two-dimensionally focusing elements (for example spherical or aspherical lenses or corresponding micromill mirrors). Furthermore, it is possible for the microimage elements to be designed as a hole pattern.
- microstructures and / or the microimage elements can be arranged in a one- or two-dimensional grid, the grid width preferably being less than 300 ⁇ m, in particular less than 100 ⁇ m, and particularly preferably less than 40 ⁇ m.
- the first micro-optical representation arrangement can be realized by means of the at least two different images. presenting a tipping image with at least two different views of the same object.
- the different views can show the same object in such a way that a stereographic impression of depth results.
- the different views can also have a parallax which differs slightly from the parallax necessary for absolute depth information, so that, in addition to a three-dimensional impression, a movement of the object shown is also presented to the observer when the viewing angle is changed.
- the first micro-optical representation arrangement can therefore also be designed such that it provides a viewing angle-dependent motion effect, which can be effected with or without absolute depth information relative to the carrier.
- orthoparallactic representations are possible.
- the second micro-optical representation arrangement is in particular designed so that the arched appearing reflective surface presents a relief-like impression. This impression is in particular such that, regardless of the viewing angle, the same relief-like impression is always conveyed.
- the observer has the impression of looking at a curved, reflective surface, although the macroscopic spatial form of the second microoptical representation arrangement is generally planar.
- the second neuro-optical representation arrangement has embossed microscopic structures which are provided with a reflection-enhancing coating.
- the second micro-optical representation arrangement may comprise a plurality of reflective facets with varying orientations. The orientations are preferably selected such that, due to the reflection directions predetermined thereby, the convex surface is imitated or readjusted for a viewer.
- facets is meant not only facets that have a reflectance of nearly 100%, but also facets that are semitransparent (eg, with a very thin or rasterized metal layer) or even substantially transparent (eg, with If the facets form the interface between layers having different refractive indices, the trailing curved surface can also be seen through refraction, for example by embossing the facets into a high-index embossing lacquer and embedding them in a low-refractive protective lacquer Furthermore, it is preferred that the facets have a maximum size which is below the resolution of a viewer (without optical aids) .
- the lateral dimensions are therefore preferably less than 300 ⁇ m, in particular less than 100 ⁇ m and particularly preferably less than 20 ⁇ m ⁇ .
- the facets ⁇ height is preferably less than 20, especially less than 10 ⁇ and particularly preferably not greater than 5 ⁇ .
- the second microoptical display arrangement can have a reflective grating period Fresnel structure.
- the second micro-optical representation arrangement can have asymmetrical diffraction structures or matt-structured grating images.
- the embodiment having a multiplicity of reflective facets can be realized, in particular, by means of a sawtooth-like design of a surface, for example an embossing lacquer layer, and a corresponding mirror coating.
- the width of such saw teeth is preferably less than 300 ⁇ , in particular less than 100 ⁇ and particularly preferably less than about 20 ⁇ .
- the height of the saw teeth is preferably less than 20 ⁇ , in particular less than 10 ⁇ and particularly preferably not greater than 5 ⁇ .
- the visually perceptible motif can have exclusively the first and second motif part.
- the visually perceivable motif has more than two motif parts, for example three, four, etc.
- corresponding micro-optical representation arrangements are present in the further motif parts, with which a three-dimensional representation with absolute depth information , a reflective surface, which appears arched over the actual macroscopic spatial form, or a viewing angle-dependent movement, tilting and / or alternating effect is provided with or without three-dimensional effect.
- the support may have a foil and at least parts of the two microoptical representational arrangements may be realized by means of the same foil.
- the security element can be designed as a multilayer composite layer.
- the security element may in particular have a first and second embossing lacquer layer, between which a carrier layer is preferably arranged is.
- the first and second embossing lacquer layer and the possibly provided carrier layer can form the carrier of the security element.
- microimage elements of the first microoptical representation arrangement and microscopic structures, for example sawtooth structures or Fresnel structures, of the second microoptical representation arrangement are embossed in the first embossing lacquer layer, the microscopic structures being provided with a reflection-enhancing coating.
- microstructures of the first microoptical representation arrangement are embossed, which are magnified by means of the microimaging optics in order to present the viewing angle-dependent at least two different images.
- the microimage elements may be refractive or reflective elements. If they are reflective elements, they are also preferably provided with a reflection-enhancing coating.
- the application of the coating is performed in one step for the microimage elements and the microscopic structures.
- the microscopic structures of the second microoptical representation arrangement not in the first embossing lacquer layer but in the second embossing lacquer layer (including the reflection-enhancing coating).
- the third embossing lacquer layer can be connected to the second embossing lacquer layer via a second carrier layer.
- the macrostructures to be imaged can be embossed not only in the region of the first motif part, but also in the region of the second motif part. This facilitates the production and leads to further interesting optical effects that are difficult to imitate.
- the multilayer composite of the security element preferably has a total thickness of less than 500 ⁇ , in particular less than about 100 ⁇ and particularly preferably less than 50 ⁇ on.
- the invention also includes a value document with a security element of the type just mentioned, including its developments.
- the security element may in particular be designed as a security thread, tear thread, security tape, security strip, patch or as a label for application to a security paper, value document or the like.
- the security element can span transparent or at least translucent areas or recesses.
- security paper is understood here in particular as the precursor that can not yet be processed to form a value document, which may also have further authenticity features in addition to the security element according to the invention.
- Value documents are here understood, on the one hand, documents produced from security papers.
- value documents can also be other documents and objects which can be provided with the security element according to the invention, so that the value documents have non-copyable authenticity features, whereby an authenticity check is possible and at the same time unwanted copying is prevented. It is understood that the features mentioned above and those yet to be explained below can be used not only in the specified combinations but also in other combinations or alone, without departing from the scope of the present invention.
- Figure 1 is a plan view of a banknote with a security element according to the invention
- Figure 2 is an enlarged plan view of the security element of
- FIG. 1 A first figure.
- Figure 3 is a cross-sectional view of the security element of
- Figure 4 is a schematic view for explaining the operation of the first micro-optical representation arrangement
- Figure 5 is a schematic view for explaining the operation of the second micro-optical representation arrangement
- FIGS. 7A - 7C views of the security element according to the invention under the same viewing angle but with different lighting directions;
- Figure 8 is a sectional view of another embodiment of the security element according to the invention.
- Figure 9 is a sectional view of yet another embodiment of the security element according to the invention.
- Figure 10 is a sectional view of another embodiment of the security element according to the invention.
- FIG. 11 shows a front view of a further embodiment of the security element according to the invention
- FIG. 12 shows a rear view of the security element according to the invention from FIG. 11.
- the security element 1 according to the invention is integrated in a banknote 2 such that the security element 1 is visible from the front side of the banknote 2 shown in FIG.
- the security element 1 is designed as a reflective security element 1 with a rectangular motif area 3 which is divided into a first motif part 4 and a second motif part 5.
- the first motif part 4 surrounds here the second motif part 5, as can be seen, for example, from the enlarged illustration in FIG.
- the motif area 3 has a carrier foil 6 (which can be, for example, a PET foil) and an upper and lower embossing lacquer layer 7, 8.
- microstructures 9 which in particular can be filled with color, are arranged in a plane perpendicular to the drawing plane of FIG.
- the microstructures 9 can also be realized in another way on the carrier foil 6.
- printed microstructures are also conceivable.
- the microstructures 9, as indicated in WO2009 / 083151 AI can also be formed by metallized sub-wavelength structures, in particular sub-wavelength gratings or moth-eye structures or produced by transfer of metallic structures, as described, for example, in the German patent application
- the upper embossing lacquer layer 7 is designed such that it has a multiplicity of microlenses 10 in the first motif part 4.
- the microlenses 10 are arranged in a plane perpendicular to the drawing plane of FIG. 3 in a grid with a fixed geometry (here for example a hexagonal grid) and thus flat in a first pattern, wherein the first pattern in the exemplary embodiment is adapted to the first microstructure pattern and both patterns aligned with one another such that, when the security element 1 is viewed, the microlenses 10 together with the microstructures 9 form a moire. Form magnification arrangement.
- the basic principle of a moire magnification arrangement is described, for example, in WO 2007/076952 A2, the entire contents of which are hereby incorporated by reference.
- the moiré magnification arrangement in the region of the first motif part 4 forms a first micro-optical representation arrangement 11, with which the number 105 is repeatedly displayed to the viewer so that it appears behind the plane of the banknote 2, as will be described in detail below. This is achieved by presenting to the left and right eyes LA and RA of the observer different views of the object to be displayed (here the number 105), which show the object in each case viewed from the corresponding direction.
- the object is drawn as a point for the purpose of simplifying the representation, with the right eye RA of the user seeing the object at position 12 and the left eye LA of the user seeing the object at position 13.
- the viewer sees with his two eyes the object under the different directions 14, 15, which intersect at the position 16, so that the object is located at the position 16 and therefore at a distance dl behind the banknote 2 for the viewer. For the viewer, this results in absolute depth information for the object.
- a second micro-optical representation arrangement 17 is formed, which in the exemplary embodiment has a multiplicity of mirrored facets 18 in the upper embossing lacquer layer 7.
- the embossing lacquer layer can also contain other embossed structures, in particular reflective grating period Fresnel structures, asymmetrical diffraction structures or matt-structured grating images that appear arched.
- the viewer is given a reflective tive surface presented, which appears curved relative to the actual macroscopic spatial form of the second micro-optical representation arrangement 17.
- incident light is reflected at the facets 18 in the same directions in which a curved surface 19 would reflect the light.
- the incident light beam 20 is reflected in the direction 21, which is parallel to the direction 21 ', which would correspond to the direction of reflection at the surface 19.
- These directions 23 and 25 are parallel to the directions 23 'and 25', which would be the reflecting directions when reflected at the surface 19.
- the facets 18 are dimensioned so that an observer can not dissolve them without aids.
- the facets 18 in the direction perpendicular to the plane dimensions of, for example, 15 ⁇ and a height of, for example, 5 ⁇ have.
- the reflection behavior of the second micro-optical representation arrangement 17 a viewer concludes that in the second motif part 5 there is the curved surface 19 with the depth d2.
- the reflection behavior indicates that the local surface normal points in the direction 26, which is clearly different from the macroscopic surface normal (arrow 27) of the second microoptical representation 17 in this region.
- a curvature is thus imitated by directional reflection, whereby only indirectly does a depth impression or a 3D impression appear results.
- this impression as "2 1/2 ,, dimensional representation or relief-like depiction call.
- a head of a woman is represented by means of the second micro-optical representation arrangement 17.
- the security element 1 is shown as it appears to a viewer at different viewing angles, provided that the security element 1 is illuminated in such a way that the observer stands in the mirror reflex of the light source.
- the view of the female portrait in the second motif part 5 always remains the same, while due to the parallax the depthwise representation of the numbers 105 shifts horizontally from left to right.
- the number 105 denoted by the arrow PI is to the left of the neck of the portrait of a woman.
- the number 105 is just beginning to disappear behind the portrait of a woman.
- the number 5 of the number 105 is no longer visible.
- the first micro-optical display device 11 provides different images depending on the viewing angle, while the representation of the second micro-optical display device 17 with respect to their spatial effect does not depend on the viewing angle.
- the first micro-optical representation arrangement 11 provides more than two different views of the numbers 105 in such a way that the described movement of the numbers 105 relative to the female portrait results when the viewing direction changes. There is thus a parallax.
- FIGS. 7A, 7B and 7C the security element 1 according to the invention is shown from the front, in each case in the same viewing direction, although the position of the light source and thus the direction of illumination varies.
- FIG. 7A the security element 1 is illuminated from the left.
- Figure 7B the security element 1 is illuminated from the front and in Figure 7C, the security element 1 is illuminated from the right.
- the portrait of the woman and thus the second motif part 5 reflects the light in accordance with the curvature of the trailing head.
- the positions of the depth numbers 105 do not change since the viewing direction and thus the viewing angle have not changed.
- the position of the light source will be fixed and an observer will conclude from the position of the light reflections and their movement when tilting the security element to the shape of the imprinted curvature.
- the first micro-optical representation assembly 11 provides a view independent of the illumination direction at a constant viewing angle, while the representation of the second micro-optical representation arrangement 17 varies according to the imitated reflective and relief-like embodiment of the female portrait.
- an absolute depth effect is thus achieved by means of the moiré magnification arrangement 11, in which for the observer is represented by the periodically recurring number 105 lying in the depth dl.
- the microstructures 9 can, as already mentioned, preferably be filled with color, so that the numbers 105 on the one hand and the remaining area of the first motif part 4 on the other appear dull, but different ly colored.
- the second motif part 5 In front of this first motif part 4, there is the second motif part 5, in which the vaulted and shining metallic portrait of a woman is shown via an arrangement of metallized microscopic sawtooth gratings.
- the first micro-optical magnification arrangement 11 may be designed not only as Moire- magnification arrangement, but for example as a modulo magnification arrangement, as for example in the
- WO 2009/000528 AI is described.
- the content regarding the formation of a modulo magnification arrangement of WO 2009/000528 A1 is hereby incorporated into the present application.
- the image to be displayed does not necessarily have to be composed of a grid of periodically repeating individual motifs. It can be displayed a complex frame with high resolution.
- the image to be displayed generally consists of individual motifs (in this case microstructures 9) which are periodically arranged in a grid and which are enlarged by the lenses 10, the area assigned to each individual motif being approximately equal to the area of the surface corresponding lens cell corresponds.
- the microlenses 10 and the sawtooth structure for the reflective facets can be produced simultaneously by means of only a single embossing of the embossing layer 7. Subsequently, only the facets are to be metallized so that they appear reflective.
- the structure according to FIG. 3 is therefore easy to produce.
- FIG. 8 shows a modification of the inventive security element 1, in which the first microoptical representation arrangement 11 has hollow mirrors 28 instead of the microlenses 10, which are formed by embossing the lower embossing lacquer layer 8 and applying a reflective coating.
- the second rough-crystal display arrangement 17 embodied as facets 18 in the exemplary embodiment is also formed on the lower embossing lacquer layer 8.
- the facets 18 can be formed by embossing and mirroring in the same way as the micro-hollow mirrors 28.
- the microstructures 9 can not only be in the region of first motif part 4, but also in the region of the second motif part 5 and thus above the facets 18. This facilitates the production of the security element 1.
- microstructures 9 are provided in the region of the second motif part 5 and filled with a color, the domed one appears Also, if the coloring of the curved specular surfaces is undesirable, the microstructures 9 in this area may be omitted.
- a construction of the security element 1 is shown in FIG. 9, in which the microcavity mirrors 28, the microstructures 9 and the facets 18 are individually embossed into a separate embossing lacquer layer 8, 7 and 29. Between the embossing lacquer layers 8 and 7 there is provided a first carrier foil 6 and between the embossing lacquer layers 7 and 29 a second carrier foil 30 is provided.
- micro-concave mirrors 28 may be the same even in different designs since only a homogeneous area covered with micro-mirrors 28 is needed. Once you have made an original with very good imaging properties, you can use it to make many different security features.
- embossing tool can be used for embossing the micro-cavity mirrors 28, so that this too has to be produced only once.
- micro-hollow mirrors 28 and the facets 18 can be metallized differently, for example with different metals or coatings with color-shifting effects (eg thin-film systems in which the color varies depending on the viewing angle).
- a particular advantage of the structure of FIG. 8 is that both the micro-cavity mirrors 28 and the facets 18 are mirrored, whereas, for example, in the structure shown in FIG. 9, a partial demetallization is necessary in the regions adjoining the second micro-optical representation arrangement 17 , The sharpness of the border between the Both motif parts 4, 5 is then given by the corresponding tolerances of demetallization. This linearization is not present in the structure according to FIG. 8, so that the curved surface in the second motif part 5 with a particularly filigree outline can appear in the first motif part 4 against the background of the moiré or modulo magnification arrangement.
- a further protective lacquer layer may also advantageously be provided on the upper side and / or underside of the security element 1, so that the resistance and the protection against impressions by counterfeiters can be increased.
- the first micro-optical representation assembly 11 instead of a Mikrofokussierimplantationr asters (grid of the micro lenses 10 or grid of the micro-hollow mirrors 28) also have only a breadboard 31, as shown in Figure 10 is.
- a perforated grid 31 can be realized for example by periodically arranged holes or slots in an opaque, for example, mirror-metallized layer.
- the holes can be small recesses. In this case, the holes may be referred to as positive holes. It is also possible to provide so-called negative holes in which the holes are small, non-transparent or non-reflective areas.
- the breadboard also extends into the second motif area 5, so that superimposition of the representations results in the second motif area.
- the security element can also be designed so that no hole pattern is present in the second motif area 5.
- both the first micro-optical representation arrangement 11 and the second micro-optical representation arrangement 17 can be realized by means of diffractive structures.
- a hologram with a stereographic 3D representation can be provided, which is constructed from microscopically small sinusoidal gratings.
- asymmetrical diffraction gratings are preferably arranged in such a way that the reflection behavior of a curved surface is (possibly) achromatically reproduced, as described, for example, in WO 2006/013215 A1, the disclosure of which is hereby incorporated by reference.
- the two motif parts 4 and 5 can at least partly overlap.
- the two motif parts 4 and 5 can also be interleaved into one another in certain areas.
- the surfaces of the two motif parts 4, 5 can be decomposed, for example, into complementary surface elements and subsequently combined to form an overall motif.
- Each motif part loses part of its image information, which is replaced in the affected area elements by the image information of the other surface element. If the dimensions of the surface elements are below the resolution of the eye, the viewer perceives the individual impressions of the two parts of the subject at the same time and processes them into an overall motif.
- the area proportions of the area elements originating from both motif parts can be distributed locally and / or globally the same or differently.
- the motif part with the larger area proportion can visually dominate with respect to the motif part with the smaller proportion.
- first micro-optical representation arrangement 11 is designed as a moire magnification arrangement with microlenses 10 and the second micro-optical representation arrangement 17 has the reflective facets 18, it is possible, for example. In the interleaved region, every second microlens 10 of the first microoptical representation arrangement 11 can be replaced by one or more reflective facets 18 of the second microoptical representation arrangement 17.
- the motif area 3 of the security element 1 can be e.g. be divided into small tiles or thin strips, which are each occupied by elements of the first or second micro-optical representation assembly 11, 17.
- the object represented by means of the first micro-optical representation arrangement 11 may also seem to lie or float in front of the domed surface of the second micro-optical representation arrangement 17.
- first and second microoptical display arrangements 11, 17 it is possible to change continuously from a metallically glossy, opaque curvature to an increasingly transparent and ultimately rather glassy appearance.
- the first and / or second micro-optical representation arrangement (s) 11, 17 can / may be wholly or partly provided with a surface-tilting coating, in particular a thin-film system with reflector / dielectric / absorber. This further enhances the visual attractiveness and further increases the security against counterfeiting.
- the security element 1 according to the invention can be arranged on the banknote 2 such that it is visible not only from the front side shown in FIG. 1, but also from the rear side of the banknote. However, it is not compulsory for all generated curvature or depth effects to be visible from both sides.
- FIG. 11 front view
- 12 rear view
- the security element 1 has a first microoptical representation arrangement 11 according to FIG. 8, which here repeats the number 105 periodically in the depth.
- the second motif part 5 a vaulted appearance of a portrait is visible, the representation of both sides (ie also from the back of Figure 12) appears arched. This can e.g. be realized by means of facets 18 according to FIG.
- the viewer looks in the region of the first motif part 4 on the back of the micro-cavity mirror 28 of the first micro-optical representation assembly 11, so that he can perceive there only a matte metallized area (in Figure 12, the numbers 105 are not in the first part of the motif 4) shown).
- a further curved representation for example, in a second motif region 32 adjoining the motif region 3, can thus be embodied by means of reflective facets. rather, as shown in FIG. 8.
- the second motif area 32 and thus the number 1452 is here visible only from the back (from the front, the number would appear reversed).
- This can be achieved, in particular, by arranging the security element 1 in a window area of the banknote which is only as large as the motif area 3, so that the second motif area 32 is concealed and therefore can only be seen from the rear side.
- first and second motif areas 3 and 32 can be selectively covered with a thin-film system that overtakes them.
- the second motif part 5 as well as the motif region 32 on the rear side (FIG. 12) are covered with a thin-tilting thin-film system, so that these elements then appear with changing color in front of the metallic matt and colorless background of the micro-cavity mirror backs in the first motif region 4.
- the security element 1 according to the invention can be developed such that both the bulging and the depth effect can be seen from both sides of the security element 1.
- the first micro -opic representation arrangement 11 in the first motif part 4 was in each case designed such that a stereographic representation with depth information is achieved.
- These are understood here as representations in which a three-dimensional effect is generated in that the security element 1 provides the observer's left and right eyes with different views of an object, which show the object viewed from the respective direction. From these different views results for a viewer then an absolute depth information, from which total a three-dimensional impression results.
- the representations used in this class can often have more than just two different views, which usually results in a parallax (ie when turning or east-west tilting move the image components in the foreground relative to the image components in Büdhinter ground). Under certain circumstances, for example, you can also look behind an object standing in the foreground by turning.
- holograms for example directly exposed holograms or computer-generated stereograms.
- microlens tilt images and Moire magnification arrangements with depth effect and / or motion effect as e.g. in WO 2007/076952 A2 or WO 2009/000527 Al.
- this type of display may include lenticular reflective Fresnel structures (e.g., EP 1 570422 B1, EP 1 562 758 B1), domed diffractive achromatic elements (e.g., WO 2006/013215 A1), Mart structure gridded images (e.g.
- WO2010 / 034420A1 or, in particular, also relief-like appearing security elements based on micro-optical sawtooth gratings, as described in connection with FIG. 5, for example in the present application.
- All these embodiments have in common that an at least partially mirrored and practically flat on a larger scale Surface, the law implicitly assumed by the observer that angle of incidence is the same as the angle of reflection is violated on a larger scale, for example, by locally deviates from the visible surface of the security element visible to the observer and / or by micro mirrors not visible to the naked eye the incident light is diffracted by diffraction effects in unexpected directions by the viewer.
- the first microoptical display arrangement 11 can now be designed in such a way that in the first motif part 4 the parallax does not exactly correspond to the parallax of a subjacent object.
- This can be realized, for example, by moire magnification arrangements or modulo magnification arrangements. It can thereby be achieved that when tilting or turning the security element 1, an additional movement effect in the first part of the motif 4 occurs.
- This may be an orthoparallactic movement, as e.g.
- a representation with correct parallax corresponds to a representation with an A-matrix, which is occupied only on the main diagonal.
- the A matrix is occupied only at the positions not lying on the main diagonal.
- a small error of parallax in the sense of the present invention is when the A-matrix is occupied both on the main diagonal and next to it.
- the parallax does not exactly correspond to the parallax of a deep-seated object, so that in extreme cases an orthoparallactic motion occurs, the second micro-optical representation arrangement can also have "errors" in the orientations
- Such an effect is, for example, in the case of a so-called imaginary surface, which is understood to mean the formation of a reflection or transmission behavior which is not produced by a real curved reflecting or transmitting surface If, for example, the azimuth angles of all facets are turned 90 ° to the right, then a relief illuminated from above looks like it is illuminated from the right n would expect the post-relief, but also "orthoparallactic", which can be a very surprising effect. Such a viewer, however, also appears arched at first glance. For the impression of a curvature according to the invention, it is therefore not important here that the orientation of the microstructures necessarily imitates the reflection behavior of a real curved surface exactly.
- the representation can be made by means of the first micro-optical representation arrangement 11 in the first motif part 4 in the case of an east-west tilting or turning of the safety belt.
- a deep-lying image of a first symbol A could tilt into at least one other representation, for example a symbol B, when the security element 1 is tilted.
- the first micro-optical representation arrangement 11 can also realize additional effects, for example, in addition to the tilting images mentioned above, also kinematic effects (movements, pumping effect, etc.).
- the three-dimensional representation in the first motif part 4 can move when the security element 1 is tilted.
- the representation could also tilt from a certain tilt angle in the representation of a completely different, not necessarily three-dimensional appearing object (for example, a lying in the depth number in another representation, for example, a further tilting then moving symbol, change).
- the quality or the appearance of the two micro-optical representation arrangements can each show a different dependence on the viewing or lighting situation used.
- a stereogram realized by a hologram grating can only be clearly recognized from the right direction with almost parallel illumination, while it is blurred or even not perceived under diffuse illumination.
- the second micro-optical representation arrangement which appears arched according to the invention, is very easily recognizable even with diffuse illumination from a wide angular range.
- Other combinations can show in plan view and clearly recognizable first and second micro-optical representational arrangements.
- the first microoptical representation arrangement can be made, for example, from a moiré Magnification arrangement on the basis of a microlens grid consist, for example, a depth effect shows in upside and view, while a second micro-optical representation formed by metallized sawtooth structures in plan view the desired bulge effect and can only appear opaque in review.
- the security element according to the invention can consequently be designed such that, depending on the viewing and / or illumination situation, the representation of one of the two microoptical representation arrangements dominates, while the representations in another viewing or illumination situation complement one another to form an overall motif.
- the security element 1 according to the invention can also be designed, for example, as a security strip 33, as shown in FIG. Furthermore, the security element 1 can not only be formed on a carrier foil as described, from which it can be transferred to the value document 2 in a known manner. It is also possible to design the security element 1 directly on the value document. Thus, a direct pressure on a polymer substrate with subsequent embossing of the security element can be carried out, for example, to form a security element according to the invention in the case of plastic banknotes.
- the security element according to the invention can be formed in a wide variety of substrates.
- a paper with synthetic fibers ie paper with a content x polymeric material in the range of 0 ⁇ x ⁇ 100 wt .-%
- a plastic film for.
- PE polyethylene
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- PEN polyethylene naphthalate
- PP polypropylene
- PA polyamide
- a multilayer composite in particular a composite of several different films (composite composite ) or a paper
- micro-optical representation arrangements are located on planar substrates.
- inventive designs can also be used to advantage in curved or flexible substrates, such as labels, securities, or banknotes.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Credit Cards Or The Like (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP18000487.1A EP3401117B1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102010025775A DE102010025775A1 (de) | 2010-07-01 | 2010-07-01 | Sicherheitselement sowie Wertdokument mit einem solchen Sicherheitselement |
PCT/EP2011/003220 WO2012000669A1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
Related Child Applications (2)
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EP18000487.1A Division EP3401117B1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
EP18000487.1A Division-Into EP3401117B1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
Publications (2)
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EP2588276A1 true EP2588276A1 (de) | 2013-05-08 |
EP2588276B1 EP2588276B1 (de) | 2018-08-08 |
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EP11730217.4A Active EP2588276B1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
EP18000487.1A Active EP3401117B1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
Family Applications After (1)
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EP18000487.1A Active EP3401117B1 (de) | 2010-07-01 | 2011-06-29 | Sicherheitselement sowie wertdokument mit einem solchen sicherheitselement |
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US (2) | US10870305B2 (de) |
EP (2) | EP2588276B1 (de) |
CN (1) | CN103068526B (de) |
AU (2) | AU2011273910B2 (de) |
DE (1) | DE102010025775A1 (de) |
HK (1) | HK1178843A1 (de) |
RU (1) | RU2560310C2 (de) |
WO (1) | WO2012000669A1 (de) |
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DE10254499B4 (de) * | 2002-11-22 | 2005-12-22 | Ovd Kinegram Ag | Schichtanordnung mit einer einen linsenartigen Effekt erzeugenden beugungsoptisch wirksamen Struktur |
DE10254500B4 (de) | 2002-11-22 | 2006-03-16 | Ovd Kinegram Ag | Optisch variables Element und dessen Verwendung |
CZ2004869A3 (cs) | 2004-08-06 | 2006-03-15 | Optaglio S. R .O. | Zpusob vytvorení trojrozmerného obrazu, difraktivní prvek a zpusob jeho vytvorení |
DE102005028162A1 (de) * | 2005-02-18 | 2006-12-28 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
DE102005027380B4 (de) | 2005-06-14 | 2009-04-30 | Ovd Kinegram Ag | Sicherheitsdokument |
DE102005062132A1 (de) * | 2005-12-23 | 2007-07-05 | Giesecke & Devrient Gmbh | Sicherheitselement |
WO2008008635A2 (en) * | 2006-06-28 | 2008-01-17 | Visual Physics, Llc | Micro-optic security and image presentation system |
DE102007029204A1 (de) | 2007-06-25 | 2009-01-08 | Giesecke & Devrient Gmbh | Sicherheitselement |
DE102007029203A1 (de) * | 2007-06-25 | 2009-01-08 | Giesecke & Devrient Gmbh | Sicherheitselement |
DE102007061979A1 (de) | 2007-12-21 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement |
DE102008046128B4 (de) | 2008-09-05 | 2024-03-07 | Giesecke+Devrient Currency Technology Gmbh | Optisch variables Sicherheitselement mit Mattbereich |
DE102008049513A1 (de) | 2008-09-29 | 2010-04-01 | Giesecke & Devrient Gmbh | Gitterbild mit achromatischen Gitterfeldern |
DE102008062475A1 (de) | 2008-12-16 | 2010-06-17 | Giesecke & Devrient Gmbh | Sicherheitselement und Sicherheitspapier |
DE102010047250A1 (de) * | 2009-12-04 | 2011-06-09 | Giesecke & Devrient Gmbh | Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes |
DE102010019766A1 (de) | 2010-05-07 | 2011-11-10 | Giesecke & Devrient Gmbh | Verfahren zur Erzeugung einer Mikrostruktur auf einem Träger |
-
2010
- 2010-07-01 DE DE102010025775A patent/DE102010025775A1/de not_active Withdrawn
-
2011
- 2011-06-29 RU RU2013104092/12A patent/RU2560310C2/ru active
- 2011-06-29 EP EP11730217.4A patent/EP2588276B1/de active Active
- 2011-06-29 AU AU2011273910A patent/AU2011273910B2/en active Active
- 2011-06-29 WO PCT/EP2011/003220 patent/WO2012000669A1/de active Application Filing
- 2011-06-29 CN CN201180041308.5A patent/CN103068526B/zh active Active
- 2011-06-29 EP EP18000487.1A patent/EP3401117B1/de active Active
- 2011-06-29 US US13/807,814 patent/US10870305B2/en active Active
-
2013
- 2013-06-04 HK HK13106523.8A patent/HK1178843A1/zh unknown
-
2016
- 2016-11-11 AU AU2016256797A patent/AU2016256797A1/en not_active Abandoned
-
2020
- 2020-11-16 US US17/098,858 patent/US20210070088A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11376883B2 (en) | 2018-05-18 | 2022-07-05 | Giesecke+Devrient Mobile Security Gmbh | Security element comprising microreflectors |
Also Published As
Publication number | Publication date |
---|---|
RU2013104092A (ru) | 2014-08-27 |
US20210070088A1 (en) | 2021-03-11 |
CN103068526B (zh) | 2016-05-11 |
AU2011273910A1 (en) | 2013-02-07 |
US20130099474A1 (en) | 2013-04-25 |
AU2011273910B2 (en) | 2016-08-11 |
AU2016256797A1 (en) | 2016-12-01 |
EP3401117A1 (de) | 2018-11-14 |
US10870305B2 (en) | 2020-12-22 |
EP2588276B1 (de) | 2018-08-08 |
WO2012000669A1 (de) | 2012-01-05 |
RU2560310C2 (ru) | 2015-08-20 |
CN103068526A (zh) | 2013-04-24 |
EP3401117B1 (de) | 2020-06-03 |
DE102010025775A1 (de) | 2012-01-05 |
HK1178843A1 (zh) | 2013-09-19 |
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