EP3148818B1 - Verwendung einer optischen sicherheitskomponente zur personalisierung eines sicherheitsdokuments und herstellung solch einer sicherheitskomponente - Google Patents

Verwendung einer optischen sicherheitskomponente zur personalisierung eines sicherheitsdokuments und herstellung solch einer sicherheitskomponente Download PDF

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Publication number
EP3148818B1
EP3148818B1 EP15729358.0A EP15729358A EP3148818B1 EP 3148818 B1 EP3148818 B1 EP 3148818B1 EP 15729358 A EP15729358 A EP 15729358A EP 3148818 B1 EP3148818 B1 EP 3148818B1
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EP
European Patent Office
Prior art keywords
layer
component
layers
optical
metal layer
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EP15729358.0A
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English (en)
French (fr)
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EP3148818A1 (de
Inventor
Hugues Souparis
Jean SAUVAGE-VINCENT
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Surys SA
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Surys SA
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals
    • 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
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser

Definitions

  • the present disclosure relates to the field of security marking. More particularly, it relates to an optical security component for the production of a personalized security document, for example an identification document, which may comprise a paper support or a plastic or composite support such as a material card. polymer or a slip intended to fit into a passport.
  • the authentication is intended to be done in reflection, for example with the naked eye.
  • Identity and travel documents such as national identity cards, driving licenses, passports, visas and registration certificates are basic means of control for a country.
  • the solutions implemented to prevent counterfeiting and the modification of official documents must guarantee not only the authenticity of identity documents and travel documents, but also the protection of personal data such as the name, the date of birth and the date of birth.
  • Photo. Security must be both simple to verify but also difficult to imitate.
  • volume holograms whose image is individually personalized with the portrait of the document holder, for example.
  • This volume hologram is made by a direct process of recording Bragg planes in a photopolymer material (see for example EP2238516B1 ).
  • This technology allows the holographic recording of the personal data of the document holder at the heart of the security lamina, which offers a very high level of security by combining personalization and visual elements.
  • laser ablation technology is also known, in particular in documents based on polycarbonate or polyvinyl chloride having reactive carbon atoms.
  • Published patents US 5331443 , EP 0868314 , US 5808758 thus describe methods of customizing security documents for authentication in reflection, in which the laser ablation is performed in a thin metal layer, which allows marking at lower energy cost, fast and without risk of overheating parasitic components of the related layers.
  • a metal layer is deposited on a diffractive optical structure for forming a reflection hologram; the selective ablation of the metal layer according to patterns determined according to the personal data of the wearer makes it possible to render the component transparent and to eliminate the variable optical effect resulting from the formation of the hologram in the only places where the metal layer is ablated . In this case, it is therefore the background and not the personalization data that has a variable optical effect.
  • the published patent EP 0868314 describes a component having two diffractive structures arranged one above the other, the diffractive structure on the side of the observation face can be customized by laser ablation, leaving in the ablated locations the lower diffractive structure.
  • the card also comprises an optically variable diffractive device formed in or on the sheet to be ablated.
  • the combination of the securing of personal data by laser ablation with the arrangement of an optically variable diffractive device makes it possible to reinforce the security of the identification card.
  • the variable optical effect is not carried by the personalization data.
  • the image carried by the optically variable diffractive device is locally destroyed during the ablation.
  • DE 10 2010 050031 A1 , DE 10 2008 017652 A1 or WO 2008/095698 discloses an optical security component comprising a discontinuous metal layer in a predetermined pattern to provide transparency and to show an optically active structure; there is therefore no disclosure in these documents personalization data that carry the variable optical effect.
  • the present disclosure proposes an optical security component in which it is the personalization data itself that carries the variable optical effect without the visibility being attenuated or the optical effect degraded.
  • Such a component makes it possible, with respect to the techniques described in the prior art, to increase the security of the documents in which it is arranged by facilitating authentication while making reproduction much more difficult.
  • the present disclosure relates to the use of a security optical component for the personalization of a security document or product according to personalization data as described in claim 1.
  • a security optical component may refer to one or more embodiments of the component indicated below.
  • the present disclosure relates to an optical security component for manufacturing a personalized security document or product, the component being intended to be authenticated according to an observation face, in a given spectral observation band, as described in claim 11.
  • the spectral band of observation can be the visible one (typically between 380 nm and 780 nm), which allows an observation with the naked eye of the component.
  • a layer is said to be transparent in the observation spectral band, or more simply “transparent” if it passes at least 80% of an incident incident light flux at normal incidence.
  • a layer is said to be opaque in the spectral band of observation, or more simply “opaque” if it leaves less than 20% of an incident light flux.
  • optically active structure is used to refer to any structure making it possible to form a variable optical effect, for example any variable color effect, either as a function of the illumination conditions or as a function of the observation conditions, for example as a function of the angle of observation in azimuth or tilt.
  • the optically active structure may itself be, depending on the case, opaque, transparent or semi-transparent.
  • This original arrangement of a security component makes it possible, by laser ablation of the structured metal layer, to generate personalization information, for example a photo or identification data, in the form of highly contrasting optically variable elements.
  • personalization information for example a photo or identification data
  • the credentials appear on a background neutral and stable depending on the observation conditions, this background resulting from the diffusing optical structure formed by the structured metal layer.
  • the neutral and stable background merges with the appearance of the support on which the component is arranged.
  • This may for example be a diffusing white background or "dull white" in the case of a paper medium.
  • An identification document bearing such a component has a very high level of security on the one hand because the identification data can be authenticated to the naked eye in a simple and reproducible manner, and on the other hand because is difficult to reproduce. Such a document is also resistant to forgery since the ablated portion can not be reintegrated to the card.
  • variable optical effects may result, for example, and without limitation, interference or diffraction phenomena, possibly coupled to mode dielectric resonance phenomena or surface plasmon resonance.
  • the layer or set of layers can be adapted for the formation of an optically variable diffractive device (or "DOVID") according to the English expression “Diffractive Optically Variable Image Device” ”) With a variable color effect depending on the viewing angle.
  • DOVID type device generally comprises a layer structured to form a diffraction grating coated with a reflective layer, for example a high index dielectric layer or a metal layer.
  • the diffractive device is a structure that has a color effect at order 1.
  • the layer or set of layers may be adapted for the formation of an interference device.
  • the interference device is a Bragg hologram type structure having a color effect visible at the Bragg angle; it comprises for example a photopolymer layer in which is recorded a phase hologram.
  • the structure comprises a layer formed of a liquid crystal material.
  • the opaque metal layer may be carried by a structured transparent layer, arranged on the side of the observation face.
  • This layer "support” of the structure can be tinted to match the color of the support of the document to which the component is intended.
  • the security optical component is adapted to the formation of a sticker for securing a document or a product.
  • the optical security component comprises for example on the face opposite to the observation face an adhesive layer for transferring the component to the document or the product to be secured.
  • the optical security component further comprises, on the side of the observation face, a carrier film to be detached after transfer of the component on the document.
  • the security optical component is suitable for forming a card-type plastic document, comprising one or more structural layers, the structured metal layer forming the diffusing optical structure and the layer or the set of layers forming the optically active structure being carried by at least one of said structural layers.
  • the security optical component comprises, for example, a transparency window at which the structured metallic layer forming the diffusing optical structure and the layer or set of layers forming the optically active structure are arranged.
  • the transparency window is not necessarily traversing.
  • the present disclosure relates to a customizable security document or product as described in claim 12.
  • the present disclosure relates to methods for manufacturing security optical components according to the second aspect or for using a security optical component according to the first aspect.
  • the Figures 1, 2 and 3 represent, in partial sectional views, embodiments of an optical security component according to the present disclosure.
  • the figure 1 shows a partial sectional view of a customizable sticker by laser ablation to be arranged on a document to secure, for example a self-adhesive label or a hot transferable component.
  • the Figures 2 and 3 present partial sectional views of a customizable card by laser ablation, for example a plastic or composite identification card or a plastic passport page.
  • the figure 1 represents a customizable security optical component 100 intended to be transferred to a document or a product in order to secure it.
  • a carrier film 101 for example a film made of a polymer material, for example a film of polyethylene terephthalate (PET) of a few tens of micrometers, for example 10 to 100 ⁇ m, for example between 20 and 40 ⁇ m, and a detachment layer 102, for example natural or synthetic wax.
  • PET polyethylene terephthalate
  • the detachment layer makes it possible to remove the polymer support film 101 after attachment of the security optical component to the product or document to be secured.
  • This layer is optional and can be continuous or discontinuous.
  • the optical security component 100 furthermore comprises a layer 103 made of transparent material in the structured observation spectral band, on which is deposited a thin metallic layer 104 opaque to form a diffusing optical structure 20 which appears as a neutral and stable background as will be described in more detail later.
  • the metal layer is customizable by laser ablation (for example an Nd-YAG type laser); it is a layer for example of aluminum or other reflective material such as gold, silver, copper, chromium or an alloy of these materials 20 to 100 nm thick, preferably 30 to 60 nm.
  • the component 100 further comprises a transition layer 105 (optional) and a set of layers 106, 107 forming an optically active structure 30, and examples of which will be given in more detail later.
  • the transition layer 105 provides cohesion between the structured metal layer 104 and the layer or set of layers forming the optically active structure.
  • the transition layer 105 may be an adhesive resin or a primary adhesion layer. She is transparent. Then added a layer of adhesive 108, for example a re-activatable adhesive layer hot or permanent, for fixing the security component on the product or document.
  • a protective layer 109 for example a silicone paper
  • the security optical component 100 can be manufactured by stacking the layers on the support film 101, then the component is fixed on a document / product to be secured by the adhesive layer 108.
  • the support film 101 can then be detached, for example by means of the release layer 102 Apart from the reflective layer 104 which is opaque, all the layers are preferably transparent. However, the layer (s) 106-107 forming the optically active structure and / or the adhesive layer 108 may be stained to provide the personalization data with a particular background color.
  • the structured metal layer 104 is obtained by depositing a metal layer on a structured layer 103, said support layer of the structure.
  • the support layer of the structure 103 comprises, for example, microstructures having a random distribution, both spatially and in its dimensions, in order to provide an observer, after coating with the opaque metal layer, with a neutral, stable background effect. color and gloss in all conditions of use.
  • the support layer of the structure 103 may be slightly tinted to match the shade of the substrate on which the component is to be applied.
  • the structured metal layer 104 is customizable by laser ablation.
  • the ablation of the metal layer can be done before or after transfer of the security optical component to the document or product to be secured; the ablation is done according to the personalization data of the wearer, for example identification data and / or a photograph of the wearer, for example treated in gray levels.
  • the optically active structure is only revealed at the ablated areas of the metal layer.
  • the optically active structure is formed of a set of layers 106, 107 suitable for producing a device of the DOVID type, and for example of the DID type.
  • the DID device comprises, according to one or more embodiments, a multilayer film with a high refractive index layer encapsulated between two low refractive index layers, the high refractive index layer being structured to form a sub-length grating characterized by a grating vector, such that the multilayer film acts at zero order as a structured waveguide for exciting guided mode resonances at different wavelengths depending on the polarization .
  • a component behaves like a band pass filter, forming a colored mirror whose color varies with the direction observation.
  • each "first" and “second” color corresponds to a spectral band of interest between 380 nm and 780 nm, centered on a wavelength defined by the period and depth of the sub-wavelength network, the thickness of the high index layer and the index difference between the high index and low index layers.
  • the desired central wavelengths may for example be around 500 nm and 630 nm, making it possible to generate respectively green and red colors in direct reflection.
  • the period of the grating may be chosen according to the central wavelength of interest, and is between 100 and 600 nm, for example between 200 and 500 nm.
  • the difference between the high index and the low index is for example greater than 0.5.
  • the optically active structure may be an interference type structure.
  • it may be a stack of layers of different refractive indices, unstructured, to form an interference filter.
  • Such a structure is described for example in the published application US2007241553 .
  • the structure is a so-called Bragg structure.
  • the optically active structure comprises a layer in which is inscribed a phase grating to form a volume hologram; the layer is for example a photopolymer layer in which the hologram can be recorded. In this case, the optical effect is visible at the Bragg angle.
  • a structure is described for example in the published application US8059320 .
  • An optical security component of the type of the figure 1 using a device of DOVID type, and more precisely type DID, can be manufactured for example according to the following steps.
  • the microstructures making it possible to form the diffusing optical structure are recorded by photolithography or electron beam lithography on a photosensitive support or "photoresist" according to the Anglo-Saxon expression.
  • the recording of the diffusing structure will for example be made by optical copy of a naturally diffusing structure, or the recording of the speckle of a laser beam whose microscopic characteristics are naturally random and analogous.
  • An electroplating step allows to postpone these optical structures in a resistant material for example nickel-based to make a matrix or "master" metal.
  • a stamping is carried out from the matrix to transfer the diffusing structure on the layer 103 made of transparent material ( figure 1 ), for example a stamping varnish of a few microns thick carried by the film 101 of 12 microns to 50 microns in polymer material, for example PET (polyethylene terephthalate), or by the detachment layer 102 when it is planned.
  • the stamping can be done by hot pressing of the transparent material ("hot embossing") or by molding ("UV casting” or "UV Curing”).
  • the refractive index of the layer formed by the stamping varnish is, for example, 1.5.
  • a metal customizable by laser ablation for example a metal selected from silver, aluminum, gold, chromium, copper or an alloy of these metals.
  • the metallization is for example carried out by evaporation under vacuum or by "sputtering".
  • One or more transition layers are for example deposited on the structured metal layer to ensure cohesion with the other part of the component which carries the optically variable structure.
  • at least one of these layers may be a stamping layer of dielectric material of refractive index n 0 , for example a low index layer, for example a stamping varnish of a few microns thick.
  • an optical structure formed, for example, of the subwavelength grating (s) in the case of the DID is recorded by photolithography or electron beam lithography on a photosensitive medium (or "Photoresist” according to the Anglo-Saxon expression).
  • an electroplating step makes it possible to transfer the optical structure in a resistant material, for example based on nickel, to produce a new metal matrix or "master” comprising the optical structure.
  • stamping of the layer 106 by the new matrix for example by molding and UV crosslinking ("UV casting").
  • the deposition on the layer 106 and embossed layer 107 of refractive index n 1 different from n 0 for example by evaporation under vacuum.
  • the layer 107 is for example a high-index layer, for example Zinc sulphide (ZnS), refractive index 2.2, or titanium dioxide (TiO 2 ), refractive index 2.5 or in polymeric material with high optical index and its thickness between 40 and 200 nm.
  • ZnS Zinc sulphide
  • TiO 2 titanium dioxide
  • refractive index 2.5 refractive index 2.5 or in polymeric material with high optical index and its thickness between 40 and 200 nm.
  • the active optical structure 30 is formed of an interference filter
  • the active optical structure 30 is formed of a Bragg structure
  • it may for example be deposited a layer of photosensitive material, either on a transition layer 105, or directly on the metallized layer 104 of the diffusing structure 20.
  • a laser source may be used to make an optical copy of a plate comprising the holographic grating and / or to directly record a Bragg grating in the photosensitive material. The recording is fixed in the material by a flash of UV light capable of permitting the crosslinking of the photopolymer.
  • FIGS. 2 and 3 illustrate two examples of the component according to the present disclosure, adapted for the production of a customizable map by laser ablation, for example a plastic or composite identification card such as an identity card, a driving license, etc. or a passport slip.
  • a plastic or composite identification card such as an identity card, a driving license, etc. or a passport slip.
  • the component comprises a set of layers of structure generally between 50 and 400 microns thick, merged together to form a 750 ⁇ m nominal thickness document for a card.
  • the structural layers may be of plastic material, for example polycarbonate; among all the layers, a thicker layer can form the heart of the document or "card core" in the case of a card-type document, and the other layers of structure can be distributed symmetrically on both sides. card's other heart to form after the merger the card body.
  • a customizable security optical component 200 comprises a set of structure layers 201 to 205, as described below.
  • the component 200 further comprises on the side of the observation face of the card (recto) an opaque metal layer structured to form a diffusing optical structure 20 and customizable by laser ablation.
  • the component 200 also comprises on the opposite side to the observation face (verso) a layer or set of layers adapted to the formation of an active optical structure 30.
  • the diffusing optical structure 20 and structure active optics 30 are carried by two different layers of structure, 202, 204, the two layers being then merged with the others layers of structure, the central layer 203 forming the card core.
  • all the structure layers are transparent in their entirety.
  • only the layers 201 to 203 are transparent in their entirety.
  • at least one of the structure layers 201 to 203 is opaque and has a transparency window on the other. whereof the diffusing optical structure 20 and the active optical structure 30 are arranged. figure 2 , the transparency window is indicated by dotted lines.
  • the transparency window is for example obtained by only making a partial impression of the opacified structure layer.
  • the transparency window may not cross the entire component, only the area between the observation face and the optically active structure to be transparent.
  • the figure 3 is another example of a customizable security optical component adapted to the manufacture of a plastic card or sheet.
  • the customizable security optical component 300 comprises, as in the preceding example, a set of structure layers 201 to 205, and as before, an opaque metal layer structured to form the diffusing optical structure 20 and customizable by laser ablation and a layer or assembly
  • the diffusing optical structure 20 and the active optical structure 30 are carried by a single structure layer 202.
  • the structures are carried by the card core 203.
  • the diffusing optical structure 20 is arranged on the front side and the active optical structure 30 is arranged on the back side.
  • the layer 203 is fused with the other layers of structure.
  • at least one of the structure layers for example the layer 202, may be opaque and have a transparency window at the location of which the diffusing optical structure 20 and the active optical structure 30 are arranged. layers beneath the optically active structure 30 is optional.
  • the structured metallic layer forming the diffusing optical structure 20 can be ablated to reveal the optically active structure 30 at the level of the ablated zones of the metal layer.
  • Ablation can be done according to the personalization data of the wearer. , for example identification data and / or a photograph of the wearer.
  • FIGS. Figures 2 or 3 illustrate partial views of components intermediates 41, 42, obtained at different stages of manufacturing a customizable security optical component of the card or plastic sheet type, as shown in the examples of FIGS. Figures 2 or 3 to obtain the diffusing optical structure 20 and active optical structure 30 respectively.
  • the intermediate component 41 may comprise, as in the exemplary embodiment of the sticker shown on 100 figure 1 a support film 401, for example a film of polymer material, for example a polyethylene terephthalate (PET) film of a few tens of micrometers, for example 10 to 100 ⁇ m, preferably 20 to 40 ⁇ m, and a release layer 402, for example in natural or synthetic wax (optional).
  • the intermediate component 41 also comprises a layer 403 made of transparent material in the structured observation spectral band, on which a thin opaque metal layer 404 is deposited, the set of two layers 403, 404 forming the diffusing optical structure 30 which appears as a neutral and stable background.
  • the method of manufacturing the structured metal layer may be similar to that described in the embodiment of the vignette ( figure 1 ).
  • the metal layer is customizable by laser ablation; is then added a layer of adhesive 408, for example a heat-reactive adhesive layer or for example crosslinkable adhesive.
  • the adhesive layer 408 makes it possible to fix the intermediate component 41 on a structural layer.
  • the detachment layer 402 can then be used to remove the polymer support film 401 after attachment of the intermediate component to the structural layer so that only the diffusing optical structure 20 remains.
  • the intermediate component 42 may comprise, as before, a support film 401 and a release layer 402. On these layers is deposited (e) the set of layers adapted (e) to the formation of the optically active structure 30.
  • the layer or set of layers for the formation of the optically active structure 30 may be one or the other of the layers or sets of layers previously described in the case of the example of the figure 1 and the method of manufacture may be similar.
  • an adhesive layer 408 for example a heat-reactive or crosslinkable adhesive layer, is added for fixing the security component to a structural layer.
  • the intermediate component 42 can be fixed on a structural layer and then the support film removed, for example by means of the release layer, so that there remains only the structure layer that the optically active structure 30.
  • the intermediate compounds 41, 42 are fixed on the front and back of the same layer of structure (see example of the figure 3 ).
  • the intermediate compounds 41, 42 are attached to two layers of different structure (see example of the figure 2 ).
  • the Figures 5 to 7 illustrate, according to various examples, the optical effects obtained by means of an optical security component according to the present disclosure, before and after customization by laser ablation.
  • the Figures 5A and 5B represent a partial sectional view and a top view of a first customizable security optical component 500, before personalization by laser ablation.
  • the component 500 is for example a plastic card or leaflet type component, as illustrated by means of the Figures 2 and 3 .
  • the effects described would be similar with a vignette component, as illustrated for example by means of the figure 1 , after transfer to a document or product to secure.
  • the customizable security optical component 500 comprises a set of layers including a metal layer structured to form a diffusing optical structure 20 as previously described and a layer or set of layers adapted to the formation of an optically active structure 30, as previously described. All other layers are not represented.
  • the diffusing optical structure 20 and optically active structure 30 are arranged at a transparency window of the component.
  • the layer or set of layers is for example adapted to the formation of a Bragg grating created in a photopolymer material.
  • the optically active structure is not visible by an observer.
  • Figure 5B a neutral and stable background at the diffusing optical structure 20 resulting from the structured metal layer, which merges for example with the hue of the card or substrate of the document on which the component is integrated.
  • FIGS. 6A and 6B represent the same component 500 after customization by laser ablation.
  • the structured metal layer forming the diffusing optical structure 20 is discontinuous after removal of the metal layer so that the optically active structure 30 is revealed at the ablated areas.
  • Figure 6B an observer will be able to see Figure 6B ) with a very intense color effect, at the Bragg angle, the personalization data recorded by means of laser ablation, and presented in this example in the form of a sun.
  • the colored effect will be all the more important as the personalization data are visible on a stable neutral background obtained by the diffusing optical structure 20.
  • the colored effect will be variable, in particular by tilt rotation of the component, and therefore easily authenticatable and difficult to reproduce (that is to say difficult to imitate by technologies accessible to counterfeiters).
  • FIGS 7A to 7C represent an embodiment of a customizable security optical component 700, wherein the optically active structure 30 is of the DID type.
  • the component is represented after customization by laser ablation of the structured metallic layer forming the diffusing optical structure 20.
  • the personalization data again represented here in the form of a sun, present in this case a variable color effect by azimuthal rotation of the component ( Figures 7B, 7C ).
  • the optically active structure 30 at least a first element of type DID and a second element of type DID, the networks of the first and second elements being oriented in perpendicular directions, so that, when an azimuthal rotation of the component, the colors of the two elements are reversed.
  • the optical security component Although described through a number of exemplary embodiments, the optical security component, the use and the method of manufacturing said component comprise various variants, modifications and improvements which will be apparent to those skilled in the art. it being understood that these various variants, modifications and improvements are within the scope of the disclosure as defined by the following claims.

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Claims (14)

  1. Verwendung einer optischen Sicherheitskomponente (100, 200, 300, 500, 600) zur Personalisierung eines Sicherheitsdokuments oder eines Sicherheitsprodukts gemäß Personalisierungsdaten, wobei die Komponente dazu bestimmt ist, gemäß einer Betrachtungsfläche (Fobs) in einem gegebenen Datenüberwachungsspektralband authentifiziert zu werden, wobei die Komponente aufweist:
    - eine transparente, dielektrische und strukturierte Schicht (103);
    - eine opake, metallische Schicht (104), die von der transparenten, dielektrischen und strukturierten Schicht getragen wird, die auf der gegenüberliegenden Seite der Betrachtungsfläche angeordnet ist, und die in dem Überwachungsspektralband eine optisch-streuende Struktur (20) bildet, was in einem neutralen und bezüglich der Überwachungsbedingungen stabilen Hintergrund resultiert, wobei die opake, metallische Schicht (104) mittels Laserablation personalisierbar ist; und
    - eine Schicht oder einen Schichtverbund, die/der eine optische aktive Schicht (30) bildet, die von der Betrachtungsfläche vor der Personalisierung der opaken, metallischen Schicht für einen Betrachter nicht sichtbar ist, wobei die Schicht oder der Schichtverbund auf der Seite der metallischen, strukturierten Schicht (104) mittels Laserablation gegenüberliegend der Betrachtungsfläche angeordnet wird.
  2. Verwendung einer optischen Sicherheitskomponente nach Anspruch 1, wobei die transparente, dielektrische Schicht (103) getönt ist, so dass sie auf den Farbton der Auflage des Dokuments oder Produkts abgestimmt ist, für das die Komponente bestimmt ist.
  3. Verwendung einer optischen Sicherheitskomponente nach einem der vorstehenden Ansprüche, wobei die Komponente ferner zwischen der metallischen, strukturierten Schicht (104) und der Schicht oder dem Schichtverbund, die die optisch aktive Struktur bilden, mindestens eine transparente Übergangsschicht (105) in dem Überwachungsspektralband umfasst.
  4. Verwendung einer optischen Sicherheitskomponente nach einem der vorstehenden Ansprüche, wobei die Schicht oder der Schichtverbund eine optisch variable Diffraktionsvorrichtung (DOVID) bildet.
  5. Verwendung einer optischen Sicherheitskomponente nach Anspruch 4, wobei die optisch variable Diffraktionsvorrichtung eine Vorrichtung vom DID-Typ ist, und eine erste strukturierte Schicht aus einem dielektrischen Material mit einem gegebenen Brechungsindex aufweist, die zwischen zwei Schichten aus dielektrischem Material mit einem von dem der ersten Schicht verschiedenen Brechungsindizes verkapselt ist.
  6. Verwendung einer optischen Sicherheitskomponente nach einem der Ansprüche 1 bis 3, wobei die Schicht oder der Schichtverbund ein Bragg-Hologramm bilden.
  7. Verwendung einer optischen Sicherheitskomponente nach einem der vorstehenden Ansprüche, wobei die Komponente zur Ausbildung einer Vignette für die Sicherung eines Dokuments oder Produkts eingerichtet ist, und an der der Betrachtungsfläche gegenüberliegenden Fläche eine Haftvermittlerschicht (108) für die Übertragung der Komponente auf das zu sichernde Dokument oder Produkt umfasst.
  8. Verwendung einer optischen Sicherheitskomponente nach Anspruch 7, wobei die Komponente ferner auf der Seite der Betrachtungsfläche eine Trägerfolie (101) umfasst, die dazu bestimmt ist, nach der Übertragung der Komponente auf das Dokument abgelöst zu werden.
  9. Verwendung einer optischen Sicherheitskomponente nach einem der Ansprüche 1 bis 6, wobei die Komponente zur Ausbildung eines Kunststoff-Dokuments vom Kartentyp eingerichtet ist, ferner aufweisend eine oder mehr Strukturschichten (201-205), die metallische, strukturierte Schicht, welche die optisch-streuende Struktur (20) bildet, und wobei die Schicht oder der Schichtverbund, der/die die optisch-aktive Struktur (30) ausbildet, von zumindest einer der genannten Strukturschichten getragen werden.
  10. Verwendung einer optischen Sicherheitskomponente nach Anspruch 9, wobei die Komponente ein Transparenzfenster umfasst, an dem die metallische, strukturierte Schicht, welche die optisch-streuende Struktur (20) bildet, oder der Schichtverbund, der die optisch-aktive Struktur (30) ausbildet, angeordnet sind.
  11. Optische Sicherheitskomponente (100, 200, 300, 500, 600) zur Herstellung eines personalisierten Sicherheitsdokuments oder -produkts, wobei die Komponente dazu bestimmt ist, gemäß einer Betrachtungsfläche (Fobs) in einem Datenüberwachungsspektralband authentifiziert zu werden, wobei die Komponente aufweist:
    - eine transparente, dielektrische und strukturierte Schicht (103);
    - eine opake, metallische Schicht (104), die von der transparenten, dielektrischen und strukturierten Schicht getragen wird, die auf der gegenüberliegenden Seite der Betrachtungsfläche angeordnet ist, und die in dem Überwachungsspektralband eine optisch-streuende Struktur (20) bildet, was in einem neutralen und bezüglich der Überwachungsbedingungen stabilen Hintergrund resultiert, wobei die opake, metallische Schicht (104) mittels Laserablation gemäß den Personalisierungsdaten personalisierbar ist; und
    - eine Schicht oder einen Schichtverbund, die/der eine optische aktive Schicht (30) bildet, die von der Betrachtungsfläche vor der Personalisierung der opaken, metallischen Schicht für einen Betrachter nicht sichtbar ist, wobei die Schicht oder der Schichtverbund auf der Seite der metallischen, strukturierten Schicht (104) mittels Laserablation gegenüberliegend der Betrachtungsfläche angeordnet wird.
  12. Personalisierbares Sicherheitsdokument- oder Produkt, umfassend:
    - eine optische, personalisierbare Sicherheitskomponente (100, 200, 300, 500, 600), die dazu dient, gemäß einer Betrachtungsfläche (Fobs) in einem gegebenen Datenüberwachungsspektralband authentifiziert zu werden, wobei die optische Sicherheitskomponente (100, 200, 300, 500, 600) umfasst:
    - eine transparente, dielektrische und strukturierte Schicht (103);
    - eine opake, metallische Schicht (104), die von der transparenten, dielektrischen und strukturierten Schicht getragen wird, die auf der gegenüberliegenden Seite der Betrachtungsfläche angeordnet ist, und die in dem Überwachungsspektralband eine optisch-streuende Struktur (20) bildet, was in einem neutralen und bezüglich der Überwachungsbedingungen stabilen Hintergrund resultiert, wobei die opake, metallische Schicht (104) mittels Laserablation gemäß den Personalisierungsdaten personalisierbar ist; und
    - eine Schicht oder einen Schichtverbund, die/der eine optische aktive Schicht (30) bildet, die von der Betrachtungsfläche vor der Personalisierung der opaken, metallischen Schicht für einen Betrachter nicht sichtbar ist, wobei die Schicht oder der Schichtverbund auf der Seite der metallischen, strukturierten Schicht (104) mittels Laserablation gegenüberliegend der Betrachtungsfläche angeordnet wird.
  13. Verfahren zur Herstellung einer optischen Sicherheitskomponente (100, 200, 300, 500, 600) zur Verwendung nach einem der Ansprüche 1 bis 10, die eingerichtet ist zur Herstellung einer Vignette (100) zur Sicherung eines Dokuments, das Verfahren umfassend:
    - Ausbilden, auf einer Trägerfolie (101), der transparenten, dielektrischen und strukturierten Schicht (103);
    - Abscheiden, auf der transparenten, dielektrischen und strukturierten Schicht (103), der opaken, metallischen Schicht (104); und
    - Abscheiden einer Schicht oder eines Schichtenverbunds zum Ausbilden einer optisch aktiven Struktur (30).
  14. Verfahren zur Herstellung einer optischen Sicherheitskomponente (100, 200, 300, 500, 600) zur Verwendung nach einem der Ansprüche 1 bis 10, die geeignet ist zur Herstellung einer personalisierbaren Karte (200, 300) oder eines personalisierbaren Formblatts aus Kunststoff, wobei die Karte (200, 300) oder das Formblatt aus einem Stapel von Strukturschichten (201-205) ausgebildet sind, das Verfahren umfassend:
    - Ausbilden einer ersten, mittleren Komponente (41), umfassend:
    - Ausbilden, auf einer Trägerfolie (401), der transparenten, dielektrischen und strukturierten Schicht (403);
    - Abscheiden; auf der transparenten, dielektrischen und strukturierten Schicht (403), der opaken, metallischen Schicht (404); um die optisch-streuende Struktur (20) auszubilden; und
    - Übertragen; der optisch-aktiven Struktur (30) auf eine Strukturschicht der Karte (200, 300) oder des Formblattes, und Abziehen der Trägerfolie (401)
    - wobei das Ausbilden einer zweiten, mittleren Komponente (42) umfasst:
    - Ausbilden, auf einer Trägerfolie (401), der Schicht oder des Schichtenverbundes, um eine optisch aktive Struktur (30) auszubilden; und
    - das Übertragen der optisch aktiven Struktur (30) auf eine Strukturschicht der Karte (200, 300) oder des Formblattes, und das Abziehen der Trägerfolie (401).
EP15729358.0A 2014-05-30 2015-05-28 Verwendung einer optischen sicherheitskomponente zur personalisierung eines sicherheitsdokuments und herstellung solch einer sicherheitskomponente Active EP3148818B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1454942A FR3021583B1 (fr) 2014-05-30 2014-05-30 Composant optique de securite personnalisable pour la fabrication d'un document de securite personnalise et fabrication d'un tel composant
PCT/EP2015/061833 WO2015181289A1 (fr) 2014-05-30 2015-05-28 Utilisation d'un composant optique de sécurité pour la personnalisation d'un document de sécurité et fabrication d'un tel composant

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WO2019121798A1 (fr) * 2017-12-19 2019-06-27 Surys Composant optique de securite visible en reflexion, fabrication d'un tel composant et document securisé equipé d'un tel composant
JP7334414B2 (ja) * 2018-03-20 2023-08-29 凸版印刷株式会社 光学素子、転写箔、および、認証体
EP3778256A1 (de) * 2019-08-12 2021-02-17 Hueck Folien Gesellschaft m.b.H. Sicherheitselement
DE102019005705A1 (de) * 2019-08-14 2021-02-18 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement
DE102019005707A1 (de) * 2019-08-14 2021-02-18 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement

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DE102007039996B4 (de) * 2007-02-07 2020-09-24 Leonhard Kurz Stiftung & Co. Kg Sicherheitselement für ein Sicherheitsdokument und Verfahren zu seiner Herstellung
DE102008017652A1 (de) * 2008-04-04 2009-10-08 Leonhard Kurz Stiftung & Co. Kg Sicherheitselement sowie Verfahren zur Herstellung eines Sicherheitselements
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FR3021583B1 (fr) 2021-10-22

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