WO2011066990A2 - Sicherheitselement, wertdokument mit einem solchen sicherheitselement sowie herstellungsverfahren eines sicherheitselementes - Google Patents
Sicherheitselement, wertdokument mit einem solchen sicherheitselement sowie herstellungsverfahren eines sicherheitselementes Download PDFInfo
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- WO2011066990A2 WO2011066990A2 PCT/EP2010/007368 EP2010007368W WO2011066990A2 WO 2011066990 A2 WO2011066990 A2 WO 2011066990A2 EP 2010007368 W EP2010007368 W EP 2010007368W WO 2011066990 A2 WO2011066990 A2 WO 2011066990A2
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- WIPO (PCT)
- Prior art keywords
- facets
- security element
- element according
- pixels
- area
- Prior art date
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Classifications
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- 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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
-
- 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
- B42D25/23—Identity cards
-
- 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
- B42D25/24—Passports
-
- 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
- B42D25/26—Entrance cards; Admission tickets
-
- 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
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- 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
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- 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
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- B42D2035/20—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/324—Reliefs
Definitions
- the present invention relates to a security element for a security paper, value document or the like, a value document with such a security element and a method for producing such a security element.
- Items to be protected are often provided with a security element that 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, identification and value documents (such as banknotes, chip cards, passports, identification cards, identity cards, shares, investments, certificates, vouchers, checks, entrance tickets, credit cards, health cards, etc.) as well as product security elements, such as security items. Labels, seals, packaging, etc.
- a technique widely used in the field of security elements which gives a practically flat film a three-dimensional appearance, are various forms of holography.
- these techniques have some disadvantages.
- the quality of the three-dimensional representation of a hologram depends strongly on the lighting conditions. Especially with diffuse lighting, the representations of holograms are often barely visible.
- holograms have the disadvantage that they are present in many places in everyday life and therefore their special position as a security feature disappears. Based on this, the object of the invention is to avoid the disadvantages of the prior art and, in particular, to provide a security element for a security paper, document of value or the like in which a good three-dimensional appearance is achieved with an extremely flat design of the security element.
- a security element for a security paper, document of value or the like having a carrier which has a surface area which is divided into a plurality of pixels, each comprising at least one optically effective facet, wherein the plurality of pixels respectively have more of the optically effective facets with the same orientation per pixel and the facets are oriented so that for a viewer, the surface area is perceptible as compared to its actual spatial form projecting and / or receding surface.
- an extremely flat security element in which, for example, the maximum height of the facets is not greater than 10 ⁇ be provided, which nevertheless produces a very good three-dimensional impression when viewed. It is therefore possible, by means of a (macroscopically) flat area, to reproduce a surface which appears to be very curved, for the observer.
- arbitrarily shaped three-dimensional configurations of the perceptible surface can be produced in this manner.
- portraits, objects, motifs or other three-dimensional appearing objects can be recreated.
- the three-dimensional impression is always related to the actual spatial form of the surface area.
- the surface area may be flat or even curved.
- the surface area does not appear even or curved in the same manner as the surface area itself.
- the surface area which can be perceived as a protruding and / or recessed surface is understood here in particular to mean that the surface area is continuous curved surface is perceptible. So the area z. B. be perceived as a surface with an apparent curvature, which differs from the curvature or actual spatial shape of the surface area.
- a curved surface can be imitated by adjusting the corresponding reflection behavior.
- the surface area is in particular a continuous surface area.
- the surface area can also have gaps or even comprise non-contiguous subareas.
- the area may be interleaved with other security features.
- it may, for. B. can be a true color hologram, so that a viewer can perceive the true color hologram and the front and / or recessed surface, which are provided by the surface area according to the invention together.
- the orientation of the facets is chosen in particular such that the surface area is perceptible to a viewer as a non-planar surface.
- the plurality of pixels each having a plurality of the optically effective facets having the same orientation per pixel may be 51% of the number of pixels be. However, it is also possible that the majority is greater than 60%, 70%, 80% or in particular greater than 90% of the number of pixels.
- all the pixels of the surface area may have in each case a plurality of the optically active facets with the same orientation.
- the optically active facets can be designed as reflective and / or transmissive facets.
- the facets may be formed in a surface of the carrier. Further, it is possible that the facets are formed both in the top and in the bottom of the carrier and facing each other. In this case, the facets are preferably designed as transmissive facets having a refractive effect, wherein, of course, the carrier itself is also transparent or at least translucent.
- the dimensions and orientations of the facets are then selected, in particular, such that for a viewer, a surface is perceivable so that it projects forward and / or backward in relation to the actual spatial form of the top and / or underside of the carrier.
- the carrier may be formed as a layer composite.
- the facets may lie at an interface within the laminar structure. So the facets z. B. embossed in an embossing lacquer on a carrier film, then metallized and embedded in a further lacquer layer (eg protective lacquer or adhesive lacquer).
- a further lacquer layer eg protective lacquer or adhesive lacquer.
- the facets can be embodied as embedded facets.
- the optically active facets are designed such that the pixels have no optically diffractive effect.
- the dimensions of the optically effective facets can be between 1 ⁇ and 300 ⁇ , preferably between 3 ⁇ and 100 ⁇ and more preferably between 5 ⁇ and 30 ⁇ .
- the dimensions of the pixels are chosen such that the area of the pixels is smaller by at least one order of magnitude and preferably by at least two orders of magnitude than the area of the area.
- the area of the surface area as well as the area of the pixels is to be understood as meaning, in particular, in each case the area when projected in the direction of the macroscopic area normal of the area area onto a plane.
- the dimensions of the pixels can be chosen such that the dimensions of the pixels are at least in one direction at least an order of magnitude and preferably at least two orders of magnitude smaller than the dimensions of the surface of the surface region.
- the maximum extent of a pixel is preferably between 5 ⁇ and 5 mm, preferably between 10 ⁇ and 300 ⁇ , more preferably between 20 ⁇ and 100 ⁇ .
- the pixel shape and / or the pixel size may, but need not, vary within the security element.
- the grating period of the facets per pixel is preferably between 1 ⁇ m and 300 ⁇ m or between 3 ⁇ m and 300 ⁇ m. preferably between 3 ⁇ and 100 ⁇ . or between 5 ⁇ and 100 ⁇ , more preferably between 5 ⁇ and 30 ⁇ or between 10 ⁇ and 30 ⁇ ⁇ .
- the grating period is selected so that at least two facets of the same orientation are contained per pixel and that diffraction effects virtually no longer play a role for incident light (eg from the wavelength range from 380 nm to 750 nm).
- the facets can be referred to as achromatic facets and the pixels as achromatic pixels, which cause a directed achromatic reflection.
- the security element thus has an achromatic reflectivity with respect to the lattice structure present through the facets of the pixels.
- the facets are preferably formed as substantially planar surface pieces.
- the chosen formulation, according to which the facets are formed as substantially flat patches, takes into account the fact that in practice, as a rule, perfectly flat patches can never be produced.
- the orientation of the facets is determined in particular by their inclination and / or their azimuth angle. Of course, the orientation of the facets can also be determined by other parameters. In particular, these are two mutually orthogonal parameters, such. B. the two components of the normal vector of each facet.
- a reflective or reflection-increasing coating (in particular a metallic or high-index coating) may be formed, at least in regions.
- the reflective or reflection-enhancing coating may be a metallic coating that is vapor-deposited, for example.
- coating material in particular aluminum, gold, silver, copper, palladium, chromium, nickel and / or tungsten and their alloys.
- the reflective or reflection-enhancing coating may be formed by coating with a high refractive index material.
- the reflective or reflection-enhancing coating may in particular be formed as a partially permeable coating.
- a color-shifting coating may be formed on the facets at least in regions.
- the color-shifting coating can be designed in particular as a thin-layer system or thin-film interference coating.
- a layer sequence of metal layer - dielectric layer - metal layer or a layer sequence of three dielectric layers, wherein the refractive index of the middle layer is less than the refractive index of the other two layers are realized.
- the dielectric material for example, ZnS, Si0 2 , Ti0 2 / MgF 2 can be used.
- the color-shifting coating can also be designed as interference filter, thin semitransparent metal layer with selective transmission by plasma resonance effects, nanoparticles, etc.
- the color-shifting layer can in particular also be realized as a liquid-crystal layer, diffractive relief structure or sub-wavelength grating.
- a thin-film system with a reflector, dielectric, absorber structure (formed on the facets in this order) is also possible.
- the thin-film system plus facet can not only be designed as a facet / reflector / dielectric / absorber, but also as a facet / absorber / dielectric / reflector.
- the order depends It depends on which side the security element is to be viewed.
- color shift effects that are visible on both sides are also possible if the thin-film system plus facet is embodied, for example, as absorber / dielectric / absorber / facet or absorber / dielectric / reflector / dielectric / absorber / facet.
- the color-shifting coating can be designed not only as a thin-film system but also as a liquid-crystal layer (in particular of cholesteric liquid-crystalline material).
- a scattering coating or surface treatment of the facets can be provided.
- Such a coating or treatment may be scattered according to the Lambert's law of cosine, or there may be a scattering reflection with a directional distribution different from Lambert's cosine law. In particular, scattering with pronounced preferential direction is interesting here.
- the embossing surface of the embossing tool in the production of the facets via an embossing process, can additionally be provided with a microstructure in order to produce specific effects.
- the embossing surface of the embossing tool can be provided with a rough surface, so that facets with scattered reflection arise in the end product.
- facets can be provided per pixel. It can also be three, four, five or more facets.
- the number of facets per pixel can in particular be selected so that a maximum predetermined facet height is not exceeded.
- the maximum facet height can be, for example, 20 ⁇ or 10 ⁇ .
- the grating period of the facets can be chosen to be the same for all pixels. However, it is also possible for one or more of the pixels to have different grating periods. Furthermore, it is possible that the grating period varies within a pixel and is therefore not constant. Furthermore, in the grating period, a phase information can be imprinted, which is used to encode further information.
- a verification mask with grating structures can be provided which have the same periods and azimuth angles as the facets in the security element according to the invention. In one subregion of the verification mask, the grids can have the same phase parameter as the security element to be verified and, in other regions, a specific phase difference. If the verification mask is placed over the security element, the different areas will appear differently bright or dark due to the moiré effect. In particular, the verification mask can be provided on the same object to be protected as the security element according to the invention.
- the surface area can be designed in such a way that it can be perceived by an observer as an imaginary surface.
- the security element according to the invention shows a reflection behavior that is not produced with a real macroscopically curved surface can.
- the imaginary surface can be perceived as a rotating mirror, the z. B. rotates 90 °.
- Such an imaginary surface and in particular such a rotating mirror is very easily detectable and verifiable for a viewer.
- any real arched reflecting or transmitting surface can be modified into an imaginary surface by means of the surface area of the security element according to the invention.
- This can be z. B. be realized by the fact that the azimuth angle of all facets are changed, for example, be rotated by a certain angle.
- This can be interesting effects. If, for example, all azimuth angles are rotated by 45 ° to the right, the surface area for a viewer, when illuminated directly from above, is a curved surface that is apparently illuminated from the top right. Twisting all the azimuth angles by 90 °, the light reflections move when tilted in a direction that is perpendicular to the direction that a viewer would expect. This unnatural reflection behavior then makes it no longer possible for a viewer, for example, to decide whether the curved perceptible surface is present in front or behind (in relation to the surface area).
- the carrier may also have a further area area, which is preferably interleaved with the one area area and, in particular, is designed as a further security feature.
- Such training can z. B. as nesting or as a multi-channel image.
- the further surface region can be divided into a multiplicity of pixels, each of which comprises at least one optically active facet, in the same way as the one surface region, wherein the plurality of pixels preferably each have a plurality of the optically effective facets with the same orientation per pixel the facets are oriented in such a way that, for a viewer, the further surface area can be perceived as an area that is curved or protruding and / or jumping back in relation to its actual spatial form.
- z. B. two different three-dimensional representations can be realized.
- phase information can be hidden or stored as a further security feature.
- At least one facet can have a light-scattering microstructure on its surface.
- a light-scattering microstructure on its surface.
- several or even all facets may have such a light-scattering microstructure on the facet surface.
- the light-scattering microstructure may be formed as a coating.
- the facets can also be embedded in a colored material in order to additionally realize a color effect or to recreate a colored object.
- the orientations of a plurality of facets with respect to the orientations for producing the protruding and / or recessed surface may be changed such that the protruding and / or recessed surface is still perceptible, but with a surface which appears to be matt.
- the protruding and / or receding surface can also be presented with a matt surface appearance.
- the invention also encompasses a method for producing a security element for security papers, documents of value or the like, in which the surface of a carrier is height-modulated in a surface area such that the area area is divided into a plurality of pixels each having at least one optically effective facet, wherein the The plurality of pixels each have a plurality of optically effective facets with the same orientation per pixel and the facets are oriented such that an observer of the manufactured security element of the surface area is perceived as compared to its actual space form forward and / or recessed surface.
- the production method according to the invention can in particular be developed so that the security element according to the invention and the developments of the security element according to the invention can be produced.
- the manufacturing method may further include the step of calculating the pixels from a surface to be tracked.
- the facets (their dimensions and their orientations) are calculated for all pixels.
- the height modulation of the surface area can then be carried out.
- the step of coating the facets may be further provided.
- the facets can be provided with a reflective or reflection-enhancing coating.
- the reflective or reflection-enhancing coating can be a complete silvering or even a semi-transparent coating.
- microstructuring methods can be used, such as, for example, embossing methods.
- suitable structures in resist materials can also be exposed, possibly refined, molded and used for the production of embossing tools, using methods known from semiconductor production (photolithography, electron beam lithography, laser beam lithography, etc.).
- Known methods for embossing in thermal plastic films or in films coated with radiation-curing paints are used.
- the carrier may have a plurality of layers, which are successively applied and possibly structured and / or may be composed of several parts.
- the security element can be designed, in particular, as a security thread, tear-open thread, security strip, 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 is not yet able to be processed to form a value document which, in addition to the security element according to the invention, may also have further authenticity features (such as, for example, luminescent substances provided in the volume).
- 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.
- an embossing tool with an embossing surface with which the shape of the facets of a security element according to the invention (including its developments) can be embossed in the carrier or in a layer of the carrier.
- the embossing surface preferably has the inverted shape of the surface contour to be embossed, wherein this inverted shape is advantageously produced by the formation of corresponding depressions.
- the security element according to the invention can be used as a master for the exposure of volume holograms or for purely decorative purposes.
- a photosensitive layer in which the volume hologram is to be formed may be brought into contact with the front of the master, and thus with the front of the security element, directly or with the interposition of a transparent optical medium. Then, the photosensitive layer and the master are exposed with a coherent light beam, whereby the volume hologram is written in the photosensitive layer.
- the procedure can be the same or similar to the procedure described in DE 10 1006 016 139 A1 for generating a volume hologram. The basic procedure is described, for example, in Sections Nos. 70 to 79 on pages 7 and 8 of the cited document in conjunction with FIGS. 1 a, 1 b, 2 a and 2 b.
- Figure 1 is a plan view of a banknote with an inventive
- Figure 2 is an enlarged plan view of a portion of the surface 3 of the security element 1;
- Figure 3 is a cross-sectional view taken along line 6 in Figure 2;
- Figure 4 is a schematic perspective view of the pixel 47 of
- Figure 5 is a sectional view of another embodiment of some
- Figure 6 is a sectional view of another embodiment of some
- Figure 7 is a sectional view for explaining the calculation of the facets
- Figure 8 is a plan view for explaining a square grid for calculating the pixels; a plan view for explaining a 60 ° grid for calculating the pixels; a plan view of three pixels 4 of the surface 3; a cross-sectional view of the representation of Figure 10; a plan view of three pixels 4 of the surface 3; a cross-sectional view of the plan view of Figure 12; a plan view of three pixels 4 of the surface 3; a sectional view of the plan view of Figure 14; a plan view for explaining the calculation of the pixels according to another embodiment; a sectional view of the arrangement of the facets of the pixels on a cylindrical base surface; a sectional view for explaining the production of the pixels for the application according to Figure 17; 1 illustrations for explaining the angles in the case of reflective and transmissive facets; a sectional view of a nachriseden reflective surface Oberflä; a sectional view of the surface according to Figure 22 adjusting lens 22; a sectional view of the transmissive facets for the replica of the lens of Figure 23; a sectional
- FIGS. 32 a - 32 c representations for explaining embedded facets, the facets being designed as reflective facets; FIGS. 32 a - 32 c representations for explaining embedded facets, the facets being designed as reflective facets; FIGS. 32 a - 32 c representations for explaining embedded facets, the facets being designed as reflective facets; FIGS. 32 a - 32 c representations for explaining embedded facets, the facets being designed as reflective facets; FIGS.
- FIGS. 33a and 33b are illustrations for explaining embedded facets, the facets being designed as transmissive facets; FIGS. 33a and 33b are illustrations for explaining embedded facets, the facets being designed as transmissive facets; FIGS. 33a and 33b
- Figure 34 is an illustration for explaining embedded scattering
- FIG. 35 is an illustration for explaining embedded matt shiny facets.
- 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 formed as a reflective security element 1 with a rectangular outer contour, wherein the limited by the rectangular outer contour surface 3 is divided into a plurality of reflective pixels 4, of which a small part enlarged in Figure 2 are shown as a plan view.
- the pixels 4 are square here and have an edge length in the range of 10 to several 100 ⁇ .
- the edge length is not larger as 300 ⁇ . In particular, it may be in the range between 20 and 100 ⁇ .
- the edge length of the pixels 4 is chosen in particular such that the area of each pixel 4 is smaller than the area 3 by at least one order of magnitude, preferably by two orders of magnitude.
- the plurality of pixels 4 each have a plurality of reflective facets 5 of the same orientation, wherein the facets 5 are the optically effective surfaces of a reflective sawtooth grid.
- FIG. 3 shows the sectional view along the line 6 for six adjacent pixels 4i, 4 2 , 4 3 , 4 4 , 45 and 4 6 , the illustration in FIG. 3 as well as in the other figures not being to scale for better representability , Furthermore, to simplify the illustration in FIGS. 1 to 3 and also in FIG. 4, the reflective coating on the facets 5 is not shown.
- the sawtooth grid of the pixels 4 is formed here in a surface 7 of a carrier 8, wherein the thus structured surface 7 is preferably coated with a reflective coating (not shown in FIG. 3).
- the carrier 8 may be, for example, a radiation-curing plastic (UV resin), which is applied to a carrier film, not shown, (for example, a PET film).
- UV resin radiation-curing plastic
- the pixels 4i, 4 2 , 4 4 , 4s and 4 6 each have three facets 5 whose orientation per pixel 4i, 4 2 , 4 4 , 4s and 4 6 is the same in each case.
- the sawtooth gratings and thus also the facets 5 of these pixels are the same except for their different inclination ⁇ , ⁇ 4 (for the sake of simplicity) Representation are only the inclination angle ⁇ and ⁇ 4 of each facet 5 of the pixels and 4 4 drawn in).
- the pixel 43 has only a single facet 5 here. Seen in plan view (Figure 2) are the facets 5 of the pixels 4i - 4 6 strip-shaped mirror surfaces which are aligned parallel to each other.
- the orientation of the facets 5 is chosen such that for a viewer the surface 3 can be perceived as an area that protrudes and / or recovers from its actual (macroscopic) spatial form, which here is the shape of a flat surface.
- a viewer perceives the surface 9 shown in section in section 3, when he looks at the facets 5. This is achieved by choosing the orientations of the facets 5 which reflect the incident light LI as if it were incident on a surface according to the spatial form indicated by line 9 in Fig. 3, as schematically represented by the incident light L2.
- the reflection generated by the facets 5 of a pixel 4 corresponds to the average reflection of the area of the surface 9 that has been converted or readjusted by the corresponding pixel 4.
- a three-dimensional height profile is reproduced by an arrangement of reflective sawtooth structures (facets 5 per pixel 4) screened here, which mimic the reflection behavior of the height profile.
- the surface 3 can thus be generated any three-dimensionally perceptible motifs, such. a person, parts of a person, a number or other objects.
- the azimuth angle ⁇ In addition to the slope ⁇ of the individual facets 5, the azimuth angle ⁇ must also be adapted to the trailing surface.
- the azimuth angle ⁇ relative to the direction indicated by arrow PI is 0 °.
- the azimuth angle ⁇ is about 170 °.
- the sawtooth The grating of the pixel 4z is shown schematically in a three-dimensional representation in FIG.
- the reflective sawtooth structures can be written, for example by means of gray scale lithography, into a photoresist, subsequently developed, galvanically molded, embossed in UV varnish (support) and mirrored.
- the mirror coating can be realized, for example, by means of an applied metal layer (vapor-deposited, for example).
- an aluminum layer having a thickness of e.g. 50 nm applied.
- other metals such as e.g. Silver, copper, chromium, iron, etc., or alloys thereof.
- high-index coatings can be applied, for example ZnS or T1O2.
- the evaporation can be full surface. However, it is also possible to carry out a coating only in regions or in a grid-shaped manner, so that the security element 1 is partially transparent or translucent.
- the period ⁇ of the facets 5 is the same for all pixels 4 in the simplest case. However, it is also possible to vary the period ⁇ of the facets 5 per pixel 4. For example, the pixel 4z has a smaller period ⁇ than the pixels 4i-4 6 (FIG. 2). In particular, the period ⁇ of the facets 5 can be chosen randomly for each pixel. By varying the choice of the period ⁇ of the sawtooth gratings for the facets 5, any visibility of a diffraction pattern due to the sawtooth gratings can be minimized.
- a fixed period ⁇ is provided within a pixel 4. In principle, however, it is also possible to vary the period ⁇ within a pixel 4, so that aperiodic sawtooth gratings per pixel 4 are present.
- the period ⁇ of the facets 5 is on the other hand preferably between 3 ⁇ and 300 ⁇ to avoid unwanted diffraction effects on the one hand and to minimize the necessary film thickness (thickness of the support 8). In particular, the distance between 5 ⁇ and 100 ⁇ , wherein more preferably a distance between 10 ⁇ and 30 ⁇ is selected.
- the pixels 4 are square. However, it is also possible to form the pixels 4 rechteckf örmig. Also, other pixel shapes may be used, such as a parallelogram or hexagonal pixel shape.
- the pixels 4 preferably have dimensions which on the one hand are greater than the spacing of the facets 5 and on the other hand are so small that the individual pixels 4 do not disturb the unaided eye. The size range resulting from these requirements is between about 10 and a few 100 ⁇ ⁇ .
- Ai are the amplitude of the sawtooth grating, ai the azimuth angle and Ai the grating period.
- mod stands for the modulo operation and delivers the positive rest in division.
- the amplitude factor Ai results from the slope of the trailing surface profile 9.
- the sawtooth gratings or the facets 5 of different pixels 4 can be displaced relative to one another. Random values or other values varying per pixel 4 can be used for the parameters pi. As a result, a possibly still visible diffraction pattern of the sawtooth grating (the facets 5 per pixel 4) or the raster grating of the pixels 4 can be eliminated, which can otherwise cause undesirable color effects. Furthermore, due to the varied phase parameters pi, there are also no excellent directions in which the sawtooth gratings of adjacent pixels 4 fit together particularly well or particularly poorly, which prevents visible anisotropy.
- the azimuth angle ⁇ and the gradients ⁇ of the facets 5 per pixel 4 can be selected such that they do not correspond as well as possible to the trailing surface 9, but deviate somewhat therefrom.
- a (preferably random) component can be added thereto for each pixel 4 to the optimum value for adjusting the surface 9 in accordance with a suitable distribution.
- the noise standard deviation of the distribution
- the individual pixels 4 are resolved by the unaided eye. They then appear like rough but smooth sections that light up brightly from different angles.
- the strength of the noise can be chosen differently for different pixels 4, as a result of which the domed surface can appear differently smooth or dull at different points.
- the effect can be produced that the viewer perceives the surface 3 as a smooth, protruding and / or receding surface, which has a matt inscription or texture.
- the thin film system may include first, second, and third dielectric layers formed on each other, wherein the first and third layers have a higher refractive index than the second layer. Due to the different inclinations of the facets 5 different colors are perceptible to a viewer without having to rotate the security element 1.
- the perceivable surface thus has a certain color spectrum.
- the security element 1 can in particular be designed as a multi-channel image, which has different, nested part surfaces, wherein at least one of the partial surfaces is formed in accordance with the invention, so that this partial surface is perceived by the viewer as a spatial partial surface.
- the other partial surfaces can also be formed in the manner described by means of pixels 4 with at least one facet 5.
- the other partial surfaces may, but need not, be perceptible as an area that protrudes and / or rebounds relative to the actual spatial form.
- the nesting may for example be checkerboard-like or strip-like.
- the security element 1 in addition to the already described use of color-shifting coatings, it is also possible to additionally provide the security element 1 according to the invention with color information.
- Color be printed on the facets 5 (either transparent or thin) or provided below an at least partially transparent or translucent sawtooth structure.
- a decolorization of a motif represented by the pixels 4 can thereby be carried out. If e.g. If a portrait is readjusted, the color layer can provide the face color.
- a combination with a true color hologram or kinegram, in particular the interlacing with a true color hologram, which shows a colored representation of the surface 9 which is traced with the pixels 4, is also possible.
- the achromatic three-dimensional image of an object appears colored at certain angles.
- the surface 9 which is traced with the pixels 4 may, in particular, be a so-called imaginary surface.
- Training a reflection or transmission behavior understood that can not be generated with a real domed reflective or transmitting surface.
- the imaginary surface a mathematical criterion for delimiting real surfaces is introduced below and explained using the example of a rotating mirror.
- the slope and the azimuth of the facets 5 correspond to the gradient of the height function.
- this rotating mirror thus provides a surface, in which one runs continuously uphill along a circle, but at the end arrives again at the same altitude at which one started. Obviously, there is no such real surface.
- the surface is designed as a reflective surface.
- the same effects of the three-dimensional effect can essentially also be achieved in transmission if the sawtooth structures or the pixels 4 with the facets 5 (including the carrier 8) are at least partially transparent.
- the sawtooth structures preferably lie between two layers having different refractive indices. In this case, the security element 1 then appears to the viewer like a glass body with a curved surface.
- the described advantageous embodiments can also be used for the transmissive design of the security element 1.
- the rotating mirror of an imaginary surface can see through the picture.
- the security against forgery of the security element 1 according to the invention can be increased by further features visible only with aids, which can also be referred to as hidden features.
- 4 additional information can be encoded in the phase parameters of the individual pixels.
- a verification mask can be produced with lattice structures which have the same periods and azimuth angles as the security element 1 according to the invention. In a partial area of the area, the lattices of the verification mask can have the same phase parameter as the security element to be verified, in other areas a certain phase difference , Moire effects will cause these different areas to appear differently bright or dark when the security element 1 and the verification mask are superimposed.
- the verification mask can also be provided in the banknote 2 or the other element provided with the security element 1.
- the pixels 4 may have other outlines in addition to the outline shapes described. With a magnifying glass or a microscope, these outlines can then be recognized. Furthermore, in a small proportion of the pixels 4, instead of the corresponding saw teeth or facets 5, any other structure can also be embossed or inscribed without the unaided eye noticing this. In this case, these pixels are not part of the surface 3, so that there is a nesting of the surface 3 with the differently formed pixels. These other formed pixels may, for example, be every 100th pixel compared to the pixels 4 of the surface 3. It is possible to introduce into these pixels a micro-font or a logo, for example 10- ⁇ m letters in a 40- ⁇ m pixel.
- the facets in the surface 7 of the carrier 8 are formed in such a way that the lowest points or the minimum height values of all the facets 5 (FIG. 3) lie in one plane.
- the facets 5 it is also possible to form the facets 5 such that the average values of the heights of all facets 5 are at the same level, as shown schematically in FIG.
- FIG. 7 shows a sectional view in the same way as in FIG. 3, wherein, however, a mirror surface 10 is drawn for the pixel 4 4 , which adjusts the surface 9 in the region of the pixel 4 4 .
- a pixel size of, for example, 20 ⁇ m to 100 ⁇ m
- such a mirror surface 10 would lead to undesirably large heights d being present.
- the corresponding mirror surface 10 would protrude by 20 ⁇ to 100 ⁇ from the xy plane.
- the surface 9 to be readjusted can be present, for example, as a set of x, y values, each with assigned height h in the z direction (3D bitmap).
- a 3D bitmap can be used to construct a defined square or 60 ° grid in the xy plane (FIGS. 8, 9).
- the grid points are connected in such a way that a surface coverage results in the xy plane with triangular tiles, as shown schematically in FIGS. 8 and 9.
- At the three vertices of each tile one takes the h-values from the 3D-Bitmap. The smallest of these h values is subtracted from the h values of the three vertices of the tiles.
- a sawtooth surface is constructed from inclined triangles (triangular plane pieces).
- the plane pieces projecting too far out of the xy plane are replaced by the facets 5.
- the facets 5 or their orientations are obtained from tangent planes of the surface 9 to be adjusted. These can be determined from the mathematical derivation of the function f (x, y, z).
- the facet 5 attached at a point xo, yo is described by the normal vector:
- n n.
- the azimuth angle ⁇ of the tangential plane is arctan (n y / n x ) and the slope angle ⁇ of the tangential plane is arccos n z .
- the area f (x, y, z) can be arbitrarily curved and (xo, yo, zo) is the point on the area for which the calculation is being performed. The calculation is performed successively for all points selected for the sawtooth structure.
- the surface to be replicated may be described by triangular patches wherein the planar triangular pieces are stretched between selected points which lie within and at the edge of the surface to be replicated.
- the triangles can be described as plane pieces by the following mathematical function f (x, y, z)
- the surface can be projected into the x-y plane and the individual triangles can be tilted according to their normal vector.
- the oblique plane pieces form the facets and, if they project too far out of the x-y plane, as described in connection with FIG. 7, are subdivided into smaller facets 5.
- the nach swipede surface is given by triangular patches, you can also proceed as follows.
- the entire surface to be replicated is subjected at once (or portions of each surface) to a Fresnel construction modulo d (or modulo di). Since the nachhede surface consists of layer pieces, created automatically on the xy plane triangles that are filled with the facets 5.
- the construction of the facets can also be carried out as follows. In the xy-plane, over which the surface to be adjusted 9 is defined, one chooses suitable xy-points and connects them in such a way that a surface coverage of the xy-plane with polygon tiles results.
- the normal vector is determined from an arbitrary selected point (eg a vertex) in each tile from the surface 9 to be superimposed on top of it.
- a Fresnel mirror pixel 4 with several facets 5 corresponding to the normal vector is attached.
- square tiles or pixels 4 are used.
- any (irregular) tiling is possible in principle.
- the tiles can connect to each other (which is preferred because of the greater efficiency) or it can be joints between the tiles (for example, in the case of circular tiles).
- the pitch angle ⁇ of the plane can be represented as follows
- the azimuth angle ⁇ of the slope can be represented as follows
- the determination of the facets 5 according to the invention can be carried out in two fundamentally different ways.
- the xy-plane can be subdivided into pixel 4 (or tiles) and for each pixel 4 the normal vector for the reflecting planar surface is determined, which is then converted into several facets 5 of the same orientation.
- a tiling in the xy plane is first determined.
- the tiling can be created completely arbitrarily.
- the tiling consists of all the same squares with the side length a, where a preferably in the range of 10 to
- the tiling can also consist of different shaped tiles that fit together exactly or where joints occur.
- the tiles can be shaped differently and contain coding or hidden information.
- the tiles can be adapted to the projection of the surface to be adjusted in the x-y plane.
- the off set may be arbitrary in any area of the subdivision. However, it is also possible to apply the offset such that the mean values of the facets 5 are all at the same level or that the maximum values of all facets 5 are at the same level.
- the grid lines can have any distances to each other.
- the distances of the grid lines follow a certain scheme.
- grid lines can not be provided exactly parallel to each other, for example to avoid interference.
- the grid lines are parallel to each other, but have different distances.
- the different distances of the grid lines may include a coding.
- the grid lines of all facets 5 in each pixel 4 have the same distances. The distance can be in the range of 1 ⁇ to 20 ⁇ .
- the grid lines may also have equal distances within each tile or within each pixel 4, but vary per pixel 4.
- the azimuth angle ⁇ and the pitch angle ⁇ are then determined from the normal vector.
- the sawtooth grid defined by grid lines, azimuth angle and pitch angle is computationally mounted in the associated tile taking into account the offset system.
- a surface 9 to be readjusted which is made up of plane pieces i (or which is processed so that it builds up of plane pieces i), wherein the structure depth of the surface to be adjusted and the dimensions of the plane pieces are quite large
- the plane pieces i are given by three corner points xii, yii, respectively; xa, ya, Z2i ; ⁇ , ysi, z.
- the sought sawtooth surface whose structure thickness in the regions i is smaller than di, results from z modulo di, where z is calculated from the above formula and where the x and y values in the calculation are each within the range defined by xu, yu; X2i, ya; X3i, y3i given triangle in the x-y plane.
- the sawtooth surface calculated in this way is automatically composed of the facets 5.
- constants konst in the regions i result as grids
- di ⁇ tan Oi where Oi is the helix angle of the helix through xii, y ⁇ , z; X2i, yu, Z2i ; X3i, 3i, Z3 is the given triangle.
- Oi is the helix angle of the helix through xii, y ⁇ , z; X2i, yu, Z2i ; X3i, 3i, Z3 is the given triangle.
- formula A a surface 9 to be readjusted above the xy plane is described by triangular plane pieces
- the plane pieces i are given by three vertices x; n, yu, zu; X2i,
- the following formula B represents a sawtooth surface, which adjusts the three-dimensional impression of the given by the formula A, nachcardden surface 9
- the sawtooth surface according to formula B differs from the surface to be adjusted according to formula A in that the value z is subtracted in each case from the minimum value to in the region i.
- the sawtooth surface according to formula B consists of inclined triangles attached to the xy plane. If a maximum thickness di for the structure depth is specified, it may be that the maximum thickness is exceeded at the sawtooth surface according to formula B.
- the angle Oi is the slope angle of the through xii, y «, too; xa, ya, Z2i ; X3i, y3i, Z3i given triangle.
- FIG. 10 shows a plan view of three pixels 4 of the surface 3 according to a further embodiment, wherein the pixels 4 are irregular (solid lines) with irregular subdivisions or facets 5 (dashed lines).
- the pixel borders and subdivisions are here straight lines, but they can also be curved.
- FIG. 11 shows the corresponding cross-sectional view, wherein the normal vectors of the facets 5 are shown schematically. Per pixel 4, the normal vectors of all facets 5 are the same, while they are different from pixel 4 to pixel 4. The normal vectors lie obliquely in space and generally not in the plane of the drawing, as shown in FIG. 11 for the sake of simplicity.
- FIG. 12 shows a top view with the same division of the pixels 4 as in FIG. 11, but the subdivision (facets 5) per pixel 4 is different.
- the grating period ⁇ of the facets 5 in each pixel 4 is constant, but different from pixel 4 to pixel 4.
- FIG. 13 shows the corresponding cross-sectional view.
- FIG. 14 shows the corresponding cross-sectional view.
- the normal vectors are given as a contour line image. You choose discrete points on the contour lines 15 (in Figure 16 is a schematic plan view shown) and connects these points so that a triangular tiling arises. The calculation of the normal vector for the triangles is done as already described.
- the normal vector was always calculated relative to the x-y plane.
- the security element can be provided on a bottle label (for example at the bottleneck) in such a way that the trailing surface can then be perceived spatially undistorted by a viewer.
- the security element according to the invention is then applied as a bottle label to the bottleneck (with the cylindrical curvature), the trailing surface 9 can then be perceived undistorted in a three-dimensional manner.
- the normal vector ntrans at the location (xtrans, y) can be calculated as follows.
- n normal vector over (x, y).
- the security element 1 according to the invention can be designed not only as a reflective security element 1, but also as a transmissive security element 1, as already mentioned.
- the facets 5 are not mirrored and the support 8 is made of a transparent or at least translucent material, the viewing taking place in view. When illuminated from behind, a user should perceive the trailing surface 9 as if there is a front-illuminated inventive reflective security element 1.
- the facets 5 calculated for a reflective security element 1 are replaced by data for microprisms 16, the corresponding angles being shown in reflection (FIG. 19) and for transmissive prisms 16 in FIGS. 20 and 21.
- Figure 20 shows the incidence on the inclined facets 5
- Figure 21 shows the incidence on the smooth side, which is preferred because of the possible larger incidence angles of light.
- the azimuth angle of the reflective facet 5 is referred to as a s and the pitch angle of the facet 5 is referred to as o s .
- the refractive index of the micro prism 16 is n
- the pitch angle of the micro prism 16 of Figure 21 is
- FIG. 22 schematically shows a reflective surface 9 to be postulated with a mound 20 and a depression 21.
- the negative focal length -f of the specular hill 20 is r / 2
- the positive focal length f of the specular trough 21 is r / 2.
- FIG. 23 schematically shows a lens 22 which has a transparent concave portion 23 and a transparent convex portion 24.
- the concave portion 23 simulates the specular mound 20, wherein the negative focal length -f of the concave portion 23 is 2r.
- the lens 22 according to FIG. 23 can be replaced by the sawtooth arrangement according to FIG.
- FIGS. 20 to 23 schematically show the beam path for incident light L. From these beam progressions it can be seen that the lens 22 in transmission adjusts the surface 9 as desired.
- Figs. 25 to 27 an example is shown in which the sawtooth side is on the light incident side. Otherwise, the representation of FIG. 25 corresponds to the representation of FIG. 22, the representation of FIG. 26 corresponds to the illustration in FIG. 23 and corresponds to the representation of FIG. 27 of the representation in FIG. 24.
- the transparent sawtooth structure shown in Figure 27 substantially corresponds to a cast of a corresponding reflective sawtooth structure for adjusting the surface 9 of Figure 25.
- the trailing surface in transparency appears much flatter than in reflection. Therefore, the height of the sawtooth structure is preferably increased or the number of facets 5 per pixel 4 is increased.
- a transparent or at least translucent carrier 8 with a sawtooth structure having the plurality of microprisms 16, as indicated in FIGS. 28 and 29.
- the sawtooth structures 25, 26 are mirror-symmetrical on both sides.
- the two sawtooth structures 25, 27 are not mirror-symmetrical.
- the sawtooth structure 25, 27 is composed of a prismatic surface 28 with pitch angle ⁇ ⁇ and auxiliary prism 29 attached thereto with pitch angle Oh, as shown schematically in FIG ,
- ⁇ ⁇ + ah is the effective total prism angle.
- the reflective or refractive security elements shown in FIGS. 1 to 30 can also be embedded in transparent material or provided with a protective layer.
- An embedding takes place, in particular, in order to protect the microoptical elements from soiling and abrasion and to prevent unauthorized adjustment by embossing the surface structure.
- FIGS. 32 ac When embedding or attaching a protective layer, the intrinsic properties of the microoptical layer with the facets 5 change.
- FIGS. 32 ac this behavior is illustrated for embedded mirrors (the facets 5 are formed as mirrors), FIG. 32a showing the arrangement before embedding shows.
- FIG. 32b When the mirrors are embedded in a transparent layer 40, the direction in which a mirror image appears changes, as shown in FIG. 32b. If, in the case of a relief adjusted by embedded micromirrors 5, the original reflection effect is to be achieved, this must be taken into account in the case of the angle of inclination of the micromirrors, see FIG. 32c.
- Figure 33b shows schematically the adjustment of the reflective arrangement of Figure 32a by a transmitting prism arrangement with exposed prisms 16, as already z. B. in Figures 19-27 discussed.
- FIG. 33b shows schematically a possible adjustment of the reflective arrangement of FIG. 32a by embedded prisms 16, wherein the refractive indices of prism material and embedding material 40 must differ.
- the embossed facets 5, which adjust the object surface, are located on the back of the film.
- the facets 5 have dimensions of for example 10 ⁇ to 20 ⁇ .
- the viewing side is indicated by the arrow P2.
- a matt-reflecting object can be readjusted (see FIG. 35):
- the following structure is realized on a film 41 as a carrier material:
- the embossed facets 5, which adjust the object surface, are located on the back of the film.
- the facets 5 have dimensions of for example 10 ⁇ to 20 ⁇ .
- the embossing layer is provided with a semitransparent mirror 43 and on it a titanium oxide (particle size about 1 ⁇ ) pigmented paint 42 is applied, so that the facets are filled with this scattering material.
- the trailing object appears dull-glossy.
- the viewing side is indicated by the arrow P2.
- the embedding of the facets in FIGS. 32b, 32c, 33b, 34 and 35 can be carried out with colored material (also differently colored material).
- the security element 1 according to the invention can be designed as a security thread 19 (FIG. 1). Furthermore, the security element 1 can not only, as described, be formed on a carrier foil, from which it can be transferred to the value document in a known manner. It is also possible to design the security element 1 directly on the value document. Thus, a direct printing with subsequent embossing of the security element on a polymer substrate can be carried out in order to form a security element according to the invention, for example 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.
- pier / foil / paper) wherein the security element may be provided in or on or between each of the layers of such a multilayer composite.
- FIG. 31 schematically shows an embossing tool 30 with which the facets 5 can be embossed into the carrier 8 according to FIG.
- the embossing tool 30 has an embossing surface 31, in which the inverted shape of the surface structure to be embossed is formed.
- embossing tool can be provided in the same way.
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Credit Cards Or The Like (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Printing Methods (AREA)
- Duplication Or Marking (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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US13/513,690 US9827802B2 (en) | 2009-12-04 | 2010-12-03 | Security element, value document comprising such a security element, and method for producing such a security element |
BR112012013451A BR112012013451B1 (pt) | 2009-12-04 | 2010-12-03 | elemento de segurança, documento de valor, método de fabricação para um elemento de segurança, ferramenta de gravação em relevo e uso de um elemento de segurança |
EP10790829.5A EP2507069B1 (de) | 2009-12-04 | 2010-12-03 | Sicherheitselement, wertdokument mit einem solchen sicherheitselement sowie herstellungsverfahren eines sicherheitselementes |
RU2012127687/12A RU2573346C2 (ru) | 2009-12-04 | 2010-12-03 | Защитный элемент, ценный документ с таким защитным элементом, а также способ изготовления защитного элемента |
EP16000444.6A EP3059093B1 (de) | 2009-12-04 | 2010-12-03 | Sicherheitselement, wertdokument mit einem solchen sicherheitselement sowie herstellungsverfahren eines sicherheitselementes |
CN201080062597.2A CN102905909B (zh) | 2009-12-04 | 2010-12-03 | 防伪元件、具有这种防伪元件的有价文件和这种防伪元件的制造方法 |
AU2010327031A AU2010327031C1 (en) | 2009-12-04 | 2010-12-03 | Security element, value document comprising such a security element, and method for producing such a security element |
CA2780934A CA2780934C (en) | 2009-12-04 | 2010-12-03 | Security element, value document having such a security element, and manufacturing method for a security element |
US15/706,195 US10525758B2 (en) | 2009-12-04 | 2017-09-15 | Security element, value document comprising such a security element, and method for producing such a security element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102009056934.0 | 2009-12-04 | ||
DE102009056934A DE102009056934A1 (de) | 2009-12-04 | 2009-12-04 | Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes |
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Application Number | Title | Priority Date | Filing Date |
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US13/513,690 A-371-Of-International US9827802B2 (en) | 2009-12-04 | 2010-12-03 | Security element, value document comprising such a security element, and method for producing such a security element |
US15/706,195 Continuation US10525758B2 (en) | 2009-12-04 | 2017-09-15 | Security element, value document comprising such a security element, and method for producing such a security element |
Publications (2)
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WO2011066990A2 true WO2011066990A2 (de) | 2011-06-09 |
WO2011066990A3 WO2011066990A3 (de) | 2011-07-28 |
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PCT/EP2010/007368 WO2011066990A2 (de) | 2009-12-04 | 2010-12-03 | Sicherheitselement, wertdokument mit einem solchen sicherheitselement sowie herstellungsverfahren eines sicherheitselementes |
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US (2) | US9827802B2 (de) |
EP (2) | EP3059093B1 (de) |
CN (1) | CN102905909B (de) |
AU (1) | AU2010327031C1 (de) |
BR (1) | BR112012013451B1 (de) |
CA (1) | CA2780934C (de) |
DE (1) | DE102009056934A1 (de) |
RU (1) | RU2573346C2 (de) |
WO (1) | WO2011066990A2 (de) |
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CN104385800A (zh) * | 2014-10-16 | 2015-03-04 | 中钞特种防伪科技有限公司 | 光学防伪元件及光学防伪产品 |
EP2512822B1 (de) | 2009-12-14 | 2015-06-24 | Arjowiggins Security | Sicherheitselement, umfassend ein optische selement |
EP2567270B1 (de) | 2010-05-07 | 2015-08-12 | Hologram Industries | Komponente für optische authentifizierung und verfahren zur herstellung dieser komponenten |
EP2750897B1 (de) | 2011-09-02 | 2016-01-20 | Arjowiggins Security | Sicherheitsstruktur mit einer reflektierenden optischen struktur und zugehöriges verfahren |
WO2016065331A2 (en) | 2014-10-24 | 2016-04-28 | Wavefront Technology, Inc. | Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products |
WO2017011476A1 (en) | 2015-07-13 | 2017-01-19 | Wavefront Technology, Inc. | Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products |
EP2935696B1 (de) | 2012-12-20 | 2017-02-08 | Arjowiggins Security | Sicherheitsstruktur |
EP2507068B1 (de) | 2009-12-04 | 2017-05-17 | Giesecke & Devrient GmbH | Sicherheitselement, wertdokument mit einem solchen sicherheitselement sowie herstellungsverfahren eines sicherheitselementes |
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WO2017211450A1 (de) * | 2016-06-08 | 2017-12-14 | Giesecke+Devrient Currency Technology Gmbh | Sicherheitselement, wertdokumentsubstrat, mit demselben ausgestattetes wertdokument und herstellungsverfahren |
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Also Published As
Publication number | Publication date |
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WO2011066990A3 (de) | 2011-07-28 |
AU2010327031C1 (en) | 2015-11-12 |
CN102905909B (zh) | 2015-03-04 |
CA2780934C (en) | 2019-08-06 |
DE102009056934A1 (de) | 2011-06-09 |
BR112012013451A2 (pt) | 2018-10-09 |
RU2012127687A (ru) | 2014-01-20 |
US10525758B2 (en) | 2020-01-07 |
EP2507069B1 (de) | 2018-08-22 |
EP2507069A2 (de) | 2012-10-10 |
CN102905909A (zh) | 2013-01-30 |
AU2010327031A1 (en) | 2012-06-21 |
RU2573346C2 (ru) | 2016-01-20 |
AU2010327031B2 (en) | 2014-07-17 |
US9827802B2 (en) | 2017-11-28 |
US20180001690A1 (en) | 2018-01-04 |
BR112012013451B1 (pt) | 2019-12-17 |
EP3059093A1 (de) | 2016-08-24 |
US20130093172A1 (en) | 2013-04-18 |
CA2780934A1 (en) | 2011-06-09 |
EP3059093B1 (de) | 2021-03-31 |
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