EP3331709B1 - Élément de sécurité muni d'un réseau sub-longueur d'onde - Google Patents

Élément de sécurité muni d'un réseau sub-longueur d'onde Download PDF

Info

Publication number
EP3331709B1
EP3331709B1 EP16750612.0A EP16750612A EP3331709B1 EP 3331709 B1 EP3331709 B1 EP 3331709B1 EP 16750612 A EP16750612 A EP 16750612A EP 3331709 B1 EP3331709 B1 EP 3331709B1
Authority
EP
European Patent Office
Prior art keywords
security element
grating
color
grid
plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16750612.0A
Other languages
German (de)
English (en)
Other versions
EP3331709A1 (fr
Inventor
Hans Lochbihler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP3331709A1 publication Critical patent/EP3331709A1/fr
Application granted granted Critical
Publication of EP3331709B1 publication Critical patent/EP3331709B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • 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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation

Definitions

  • the invention relates to a security element for producing value documents, such as banknotes, checks or the like, comprising: a dielectric substrate, a first periodic line grid structure embedded in the substrate, of a plurality of first grid webs extending along a longitudinal direction and arranged in a first plane, with first therebetween Grid gaps and a second line grid structure of the same period embedded in the substrate from extending along the longitudinal second grating webs with intermediate second grating gaps, wherein the second line grating structure with respect to the first plane above the first line grid structure in a parallel second plane and wherein the second line grid structure for first line grid structure inverted is formed so that in plan view of the first plane, the second grid bars on the first grid gaps and the second grid gaps on the first grid land lie.
  • Security elements with periodic line grids are known, for example from the DE 102009012299 A1 .
  • DE 102009012300 A1 or the DE 102009056933 A1 You can have color filter properties in the subwavelength range if the grating profile is designed to produce resonance effects in the visible spectral range.
  • Such color filter properties are known for both reflective and transmissive subwavelength structures. These structures have a strong polarizing influence on the reflection or the transmission of an incident light beam. The color is relatively strongly dependent on the angle in reflection or transmission of such subwavelength gratings. However, the color saturation weakens for these grids clearly off when the incident light is unpolarized.
  • One-dimensional periodic gratings may have color filter properties in the sub-wavelength range if the grating profile is designed to exhibit resonance effects in the visible wavelength range. These color filter properties depend on the angle of the incident light.
  • a sub-wavelength structure which has angle-dependent color-filtering properties.
  • This lattice has a rectangular shape in cross-section and is vapor-deposited with a high refractive index (HRI), the following applies for the refractive indices: n HRI > n 2 and n 1 ⁇ n 2 ⁇ n 3 .
  • HRI refractive index
  • the angle ⁇ denotes the azimuth angle.
  • the security element marketed under the name DID (“Diffractive Identification Device”) is based on this structure and uses the color filter properties in reflection. A light-absorbing surface is required to perceive a color effect.
  • the WO 2012/019226 A1 also describes embossed subwavelength gratings with a rectangular profile, on the plateaus of which metal particles or metallic nanoparticles are imprinted. This grid shows color or polarization effects in transmission.
  • subwavelength gratings are known as angle-dependent color filters which have a metallic or semi-metallic bi-layer arrangement, for example from US Pat DE 102011115589 A1 or off Z. Ye et al., "Compact Color Filter and Polarizer of Bilayer Metallic Nanowire Grating Based on Surface Plasmon Resonances, "Plasmonics, 8, 555-559 (2012 ), wherein the metallization is realized by vapor deposition and embedded in a dielectric.
  • This known sub-wavelength structure with an approximately 70 nm thick ZnS coating is suitable as a color filter in reflection. Therefore, the structure must additionally be applied to a light-absorbing substrate in order to achieve a sufficient color contrast, which is then visible in reflection.
  • Sub-wave gratings with metallic coatings show a relatively high color saturation in transmission. Due to the light absorption in the metal, they therefore appear relatively dark.
  • Sinusoidal grids coated with a thin metal film can cause plasmonic resonance effects. These resonances lead to increased transmission in TM polarization, cf. Y. Jourlin et al. Spatially and polarization resolved mediated transmission through continuous metal films; Opt. Express 17, 12155-12166 (2009 ). This effect can be further optimized by an additional thin dielectric layer, such as T. Tenev et al., "High Plasmonic Resonant Reflection and Transmission on Continuous Metal Films on Undulated Photosensitive Polymer," Plasmonics (2013 ) disclosed. This in WO 2012/136777 A1 described security element based on this optical effect.
  • transmissive security elements are described which are based on subwavelength gratings and a show angle-dependent color.
  • the optical properties of high-index coated sine gratings are discussed in more detail.
  • the invention is therefore based on the object to provide a security element that shows a good color effect when viewed, which changes when tilted.
  • the high refractive index material is preferably dielectric or a semiconductor, e.g. Si, Ge, C.
  • a double-line grid which consists of two-layer superimposed, complementary to each other, ie, mutually shifted line grid structures.
  • a phase shift of 90 ° is the ideal value, which of course can be seen in the context of manufacturing accuracy. Due to manufacturing tolerances deviations from the complementarity, ie 90 ° phase shift, can arise here.
  • a rectangular profile may not be perfectly formed, but may be approximated by a trapezoidal profile whose upper parallel edge is shorter as the bottom one. In the case of a rectangular grid structure, the phase shift corresponds to half a period.
  • the line grid structures are constructed of a combination of a layer of high refractive, dielectric or semi-metallic material with a metallic layer.
  • the thickness of the grid bars is less than the modulation depth, that is, the spacing of the planes of the line grid structures, so that no closed film is formed. Therefore, the distance between the first and second plane is greater than the sum of (0.5 * first layer thickness) and (0.5 * second layer thickness).
  • the security element can be easily manufactured by a layer construction by first providing a base layer on which the double layer of the first line lattice structure is formed. Then, a dielectric intermediate layer is applied, which covers the first line grid structure and is thicker than the grid bars of the first line grid structure. The displaced second line grid structure can then be formed thereon, and a dielectric cover layer forms the termination of the substrate embedding the line grid structure.
  • a sub-waveguide may be first formed in the dielectric substrate, e.g. B. embossed, which has a rectangular profile in cross section. Coated, z. B. steamed, this is vertical with the materials of the double layer, the double layer is formed on the plateaus and in the trenches, which forms the second and first lattice webs. You have the desired first and second grid bars in different levels.
  • a particularly good color effect is obtained if the vertical distance between the first and the second lattice webs, ie the modulation depth of the structure, is between 100 nm and 500 nm.
  • Distance measurement refers to the two planes, e.g. can be defined by like areas of the first and second line grid structures, i. for example, on the underside of the grid bars or the top of the grid bars.
  • the vertical distance is of course to measure perpendicular to the plane, that is, the height difference between rectified surfaces of the grid bars.
  • the double layer of the lattice webs all materials are suitable which are opposite to the surrounding substrate, i. Material, have a higher refractive index, in particular by at least 0.3 higher.
  • the layer order in the bilayer is irrelevant; it may also be different for the first and the second line grid structure.
  • the security element shows an angle-dependent color filtering when viewed in transmission. This angle dependence is particularly striking when the grid lines are perpendicular to the light incidence plane.
  • the color filter can be used to make motifs multicolored so that they change their color with the twisted position or show different effects when tilting the plane. It is therefore preferred that, in plan view of the plane, at least two regions are provided whose longitudinal directions of the line grid structures are oblique to one another, in particular at right angles. When viewed vertically, a motif can be designed so that when viewed vertically, it has a uniform color and no other structure. If you tilt this security element now, the color of one area, for example the background, changes differently than the color of the other area, for example a motif.
  • Fig. 1 shows a sectional view of a security element S, which has a substrate embedded in a double-line grid, consisting of two line grating structures 2, 6.
  • the substrate comprises a dielectric carrier 1, on the in a dielectric layer, for. B. an embossing lacquer layer, a first line grid structure 2 is incorporated, which is arranged in a plane L1.
  • the first line grid structure 2 consists of first grid bars 3 with the width b, which extend along a longitudinal direction perpendicular to the plane of the drawing. Between the first grid bars 3 there are first grid gaps 4, which have a width a.
  • Each grid web 3 consists of a double layer of high refractive index material 3a of a thickness t4 and metallic material 3b of a thickness t2.
  • the thickness of the first grid bars 3 (measured perpendicular to the plane L1) is thus t2 + t4.
  • a second line lattice structure 6 with second lattice webs 7 in a plane L2, likewise from the double layer of high refractive index material 7a having a thickness t3 and metallic material 7b having a thickness t1.
  • the second grid webs 7 have the width a.
  • the second line grating structure 6 is phase-shifted in the plane L2 relative to the first line grating structure 2 in such a way that the second grate webs 7 come to rest as precisely as possible (within the manufacturing accuracy) over the first grating gaps 4.
  • second grid gaps 8, which exist between the second grid bars 7, lie over the first grid bars 3.
  • the thickness t2 + t4 of the first lattice webs 3 is smaller than the height h, so that no coherent film of the lattice webs 3 and 7 is formed.
  • the height h represents a modulation depth of the grating structures.
  • the modulation depth h i. the height difference between the first line grid structure 2 and the second line grid structure 6 (corresponding to the spacing of the planes L1 and L2) is greater than the sum of the thicknesses of the first grid bars 3 and the second grid bars 7, so that a vertical distance of the dimension h - (t2 + t4) between the two line grid structures 2 and 6 is given.
  • the lattice structure can be considered as an arrangement of two wire meshes having the same profile and spaced apart from each other at the distance h - (t2 + t4).
  • the lattice webs 3, 7 are formed in all embodiments of a double layer of a high-refractive, dielectric or semi-metallic material 3a, 7a and a metallic material 3b, 7b.
  • the high-index material has the refractive index n HRI and is surrounded by dielectrics, namely a dielectric intermediate layer 5 and a dielectric cover layer 10. In practice, the refractive indices of these surrounding materials usually hardly differ and are approximately n 1 .
  • the refractive index n HRI of the high refractive index material is above that of the surrounding material, eg by at least 0.3 absolute.
  • the security element S of Fig. 1 Reflects incident radiation E as reflected radiation R. Further, a radiation component is transmitted as transmitted radiation T.
  • the reflection and transmission properties depend on the angle of incidence ⁇ , as will be explained below.
  • the production of the security element S can take place, for example, by first applying the first line grid structure 2 and subsequently the intermediate layer 5 to the carrier 1.
  • the second line grid structure with the second grid webs 7 can then be introduced into the grid gaps 4 depicted at the top.
  • a cover layer 10 covers the security element.
  • the measures b, a and t1 to t4 are in the sub-wavelength range, i. less than 300 nm.
  • the modulation depth h is preferably between 100 nm and 500 nm.
  • a manufacturing method is also possible in which first a rectangular grid is produced on an upper side of the carrier 1.
  • the carrier 1 is thus structured such that trenches of the width a alternate with webs of the width b.
  • the patterned substrate is then vapor-deposited with the desired coating to form the first and second line grids and the first and second line grating structures. After evaporation, the structure is finally covered with a cover layer. This gives a layer structure in which the top and bottom have substantially the same refractive index.
  • the structured substrate can be obtained in various ways.
  • One option is the reproduction with a master.
  • the master mold can now be replicated in UV varnish on film, eg PET film.
  • the substrate 1 has, for example, a refractive index of 1.56.
  • hot stamping methods are also suitable.
  • the master or even the substrate itself, can be fabricated using an e-beam, focused ion beam or interference lithography, writing the structure into a photoresist and then developing it.
  • the structure of a photolithographically produced master can be etched in a subsequent step into a quartz substrate in order to form as vertical as possible edges of the profile.
  • the quartz wafer then serves as a preform and may be, e.g. in Ormocer, copied or duplicated by galvanic molding.
  • a direct impression of the photolithographically produced original in Ormocer or in nickel in a galvanic process is possible.
  • a motif with different lattice structures can be assembled in a nanoimprint process starting from a homogeneous lattice master.
  • the optical properties of the security element are discussed as examples for aluminum and the high-index materials zinc sulfide (ZnS) and titanium dioxide (TiO 2 ) in the visible wavelength range.
  • n 1.52
  • Fig. 2a and 2b show the spectral reflection ( Fig. 2a ) as well as the transmission ( Fig.
  • Fig. 2a shows on the y-axis the reflection as a function of the plotted on the x-axis wavelength for different angles of incidence, namely 0 °, 15 ° and 30 °.
  • Fig. 2b shows analog transmission.
  • the angle of incidence ⁇ is in Fig. 1 Are defined.
  • the spectral reflection shows two pronounced dips at 404 nm and 672 nm for vertical incidence of light, with the long-wave dip being found as a peak in the transmission spectrum. For increasing angles of incidence, this peak shifts into the long-wave range, and further peaks appear in the transmission spectrum, which have an angle-dependent dispersion.
  • FIGS. 3a and 3b concern the influence of the modulation depth h on the transmission spectrum.
  • the modulation depth is varied between 180 nm and 240 nm.
  • three peaks are visible, with the two short-wave peaks being significantly influenced by the variation of the modulation depth in their expression.
  • the intensity in the blue peak increases sharply and shifts into the green, while the intensity of the Peaks at the wavelength 560 nm decreases sharply.
  • FIGS. 4a and 4b refer to the influence of the high refractive index material on the diffraction behavior of the grating.
  • the figure shows the transmission spectra of a grating with the parameters of Fig. 3 but a 140 nm thick coating with TiO 2 instead of ZnS.
  • the blue component in the spectrum is significantly higher here, since TiO 2 has a much lower absorption in the blue.
  • the transmission in the red is higher overall.
  • a ZnS layer thickness of about 160 nm leads to a particularly strong change in the chroma in transmission when tilting, ie changing the angle ⁇ .
  • the change in hue increases for increasing thicknesses.
  • Fig. 5 The values of Fig. 5 were converted into x, y color coordinates and are in Fig. 6a, b shown in the CIE 1931 color space.
  • the white point is marked "WP".
  • the triangle limits the color range, which can usually be displayed with screens.
  • the diagram shows the color coordinates as trajectories.
  • the hue changes due to the variation of the layer thickness of ZnS. When tilting from 0 ° to 30 °, there is a change in color between yellow and red. In transmission, however, a relatively large area of the color space is covered by the variation of the ZnS thickness.
  • Fig. 7a, b shows the CIE 1931 color charts in reflection ( Fig. 7a ) and in transmission ( Fig. 7b ), in which the color coordination is plotted as a function of the angle of incidence ⁇ from 0 ° to 30 °.
  • the illumination of the security element with the layer order of Fig.
  • Fig. 8a and 8b show the x, y color coordinates of a security element similar to that of Fig. 7a and 7b , but with different grid parameters.
  • the grating period d 320 nm.
  • the ratio b / d is also 0.5.
  • the green hue in reflection barely changes when tilted. It mainly varies the color saturation. In transmission, on the other hand, the color changes from red to blue with high color saturation. This shows in comparison with the security element of Fig. 7 in that the tilting color in transmission can be selected by changing the lattice parameters, in particular the thickness of the high-index layer and the grating period.
  • a security feature can be graphically designed so that a subject 15 is not visible when viewed vertically and it only appears when tilted. This can be done by two grating areas 14, 15 are arranged with the same grating profile rotated by 90 ° to each other. This arrangement is in Fig. 9a and b shown.
  • the grid lines of the area 14 forming the background run vertically, while the grid lines in the area 15 forming the motif are horizontal. If now the security element is tilted around the horizontal axis, the motive appears.
  • FIGS. 10a and b show a motif of a butterfly and the number "12", wherein the square area by the number "12" contains no additional high refractive coating (area 16 in Fig. 10b ).
  • the motifs butterfly and the number "25" are not visible, but the areas 16 and 17 appear in different colors. When tilting, the motif also appears.
  • the security element can serve as a see-through window of banknotes. It can also be partially overprinted in color. One or both materials of the bilayer may also be partially removed, eg by laser irradiation with ultrashort pulses. Furthermore, a combination with high refractive transparent holograms is possible. Such holograms can also act as reflection features. A part of the security element S can be located on an absorbent background, so that this part serves only as a reflective feature and forms a contrast to the other part of the security element S, which lies in the region of the see-through window.
  • the security element can serve in particular as a see-through window of banknotes or other documents. It may also be partially overprinted color or the grid areas may be partially demetallized or configured without line grid, so that such an area is completely metallized. Combinations with diffractive grating structures, such as holograms, are also conceivable.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Credit Cards Or The Like (AREA)

Claims (9)

  1. Élément de sécurité pour la production de documents de valeur, par exemple de billets de banque, de chèques ou autres, lequel comporte :
    - un substrat diélectrique (1, 12, 10),
    - une première structure de réseau linéaire périodique (2) incorporée dans le substrat (1, 12, 10) et constituée de plusieurs premières nervures de réseau (3) s'étendant dans une direction longitudinale et disposées dans un premier plan (L1) et entre lesquelles se trouvent de premiers intervalles de réseau (4) et
    - une seconde structure de réseau linéaire (6) de même période (d) incorporée dans le substrat (1, 12, 10) et constituée de secondes nervures de réseau (7) s'étendant dans la direction longitudinale et entre lesquelles se trouvent de seconds intervalles de réseau (8),
    - dans lequel la seconde structure de réseau linéaire (6) se trouve par rapport au premier plan (L1) au-dessus de la première structure de réseau linéaire (2) dans un second plan parallèle (L2),
    - dans lequel la seconde structure de réseau linéaire (6) est réalisée de manière inversée par rapport à la première structure de réseau linéaire (2) de telle manière que, en vue de dessus dans le premier plan (L1), les secondes nervures de réseau (7) se trouvent au-dessus des premiers intervalles de réseau (4) et les seconds intervalles de réseau (8) se trouvent au-dessus des premières nervures de réseau (3) et
    - l'élément de sécurité (S), observé par transmission (T), produit un effet de couleur,
    caractérisé en ce que
    - les nervures de réseau (3) de la première structure de réseau linéaire (2) et les nervures de réseau (7) de la seconde structure de réseau linéaire (6) sont respectivement composées d'une double couche constituée d'une couche de matériau à indice de réfraction élevé (3a, 7a) et d'une couche de matériau métallique (3b, 7b).
  2. Élément de sécurité selon la revendication 1, dans lequel le matériau à indice de réfraction élevé (3a, 7a) présente un indice de réfraction supérieur d'au moins 0,3 à celui du substrat environnant (1, 12, 10).
  3. Élément de sécurité selon l'une des revendications précédentes, dans lequel la période (d) est de 200 à 700 nm.
  4. Élément de sécurité selon l'une des revendications précédentes, dans lequel le matériau à degré de réfraction élevé (3a, 7a) est choisi parmi : Si, Ge, C, ZnS, ZnO, ZnSe, SiNx, SiOx, Cr2O3, Nb2O5, Ta2O5, TixOx et ZrO2, et dans lequel le matériau métallique (3b,7b) est choisi parmi : Al, Ag, Au, Cu, Cr et leurs alliages.
  5. Élément de sécurité selon l'une des revendications précédentes, dans lequel la distance (h) entre les plans (L1, L2) est de 100 nm à 500 nm.
  6. Élément de sécurité selon l'une des revendications précédentes, dans lequel l'élément de sécurité (S) présente, en vue de dessus dans le plan (L1), au moins deux zones (14,15) dont les périodes (d) diffèrent.
  7. Élément de sécurité selon l'une des revendications précédentes, dans lequel l'élément de sécurité présente, en vue de dessus dans le plan (L1), au moins deux zones (14, 15) dont les directions des nervures de réseau (3, 7) diffèrent, de préférence de 90 degrés.
  8. Élément de sécurité selon l'une des revendications précédentes, qui est réalisé sous la forme d'un élément transparent, en particulier sous la forme d'un élément formant fenêtre destiné à un document de valeur.
  9. Document de valeur comportant un élément de sécurité (S) selon l'une des revendications précédentes, dans lequel le document de valeur comporte une fenêtre ou une zone destinée à l'observation par transmission, qui recouvre l'élément de sécurité (S).
EP16750612.0A 2015-08-06 2016-07-25 Élément de sécurité muni d'un réseau sub-longueur d'onde Active EP3331709B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015010191.9A DE102015010191A1 (de) 2015-08-06 2015-08-06 Sicherheitselement mit Subwellenlängengitter
PCT/EP2016/001291 WO2017021000A1 (fr) 2015-08-06 2016-07-25 Élément de sécurité muni d'un réseau sub-longueur d'onde

Publications (2)

Publication Number Publication Date
EP3331709A1 EP3331709A1 (fr) 2018-06-13
EP3331709B1 true EP3331709B1 (fr) 2019-09-11

Family

ID=56683882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16750612.0A Active EP3331709B1 (fr) 2015-08-06 2016-07-25 Élément de sécurité muni d'un réseau sub-longueur d'onde

Country Status (7)

Country Link
EP (1) EP3331709B1 (fr)
JP (1) JP2018528486A (fr)
KR (1) KR102511203B1 (fr)
CN (1) CN107949484B (fr)
CA (1) CA2993901A1 (fr)
DE (1) DE102015010191A1 (fr)
WO (1) WO2017021000A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016013690A1 (de) 2016-11-16 2018-05-17 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Subwellenlängengitter
DE102016013683A1 (de) 2016-11-16 2018-05-17 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Subwellenlängengitter
DE102017003532A1 (de) * 2017-04-11 2018-10-11 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement und Herstellungsverfahren hierfür
DE102017130588A1 (de) * 2017-12-19 2019-06-19 Giesecke+Devrient Currency Technology Gmbh Wertdokument
DE102018003603A1 (de) * 2018-05-03 2019-11-07 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement, Datenträger und Verwendung
DE102018132516A1 (de) * 2018-12-17 2020-06-18 Giesecke+Devrient Currency Technology Gmbh Im THz-Bereich wirkendes Sicherheitselement und Verfahren zu dessen Herstellung
EP3933263A4 (fr) * 2019-02-26 2022-07-27 Toppan Printing Co., Ltd. Filtre de sélection de longueur d'onde, procédé de fabrication de filtre de sélection de longueur d'onde, et dispositif d'affichage
FR3095981B1 (fr) 2019-05-13 2021-06-04 Surys Composant optique de sécurité à effet plasmonique, fabrication d’un tel composant et objet sécurisé équipé d’un tel composant
AT523690B1 (de) * 2020-03-16 2022-03-15 Hueck Folien Gmbh Flächiges Sicherheitselement mit optischen Sicherheitsmerkmalen

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484797A (en) 1981-07-20 1984-11-27 Rca Corporation Diffractive subtractive color filter responsive to angle of incidence of polychromatic illuminating light
US6243199B1 (en) * 1999-09-07 2001-06-05 Moxtek Broad band wire grid polarizing beam splitter for use in the visible wavelength region
CN101617263A (zh) * 2005-05-18 2009-12-30 道格拉斯·S·霍布斯 用于偏振和波长滤波的微结构光学装置
JP4621270B2 (ja) * 2007-07-13 2011-01-26 キヤノン株式会社 光学フィルタ
DE102009012300A1 (de) 2009-03-11 2010-09-16 Giesecke & Devrient Gmbh Sicherheitselement mit mehrfarbigem Bild
DE102009012299A1 (de) 2009-03-11 2010-09-16 Giesecke & Devrient Gmbh Sicherheitselement
DE102009056933A1 (de) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement mit Farbfilter, Wertdokument mit so einem solchen Sicherheitselement sowie Herstellungsverfahren eines solchen Sicherheitselementes
MTP4302B (en) 2010-08-11 2012-01-23 Securency Int Pty Ltd Optically variable device
FR2973917B1 (fr) 2011-04-08 2014-01-10 Hologram Ind Composant optique de securite a effet transmissif, fabrication d'un tel composant et document securise equipe d'un tel composant
WO2012145677A2 (fr) * 2011-04-20 2012-10-26 The Regents Of The University Of Michigan Filtrage spectral pour afficheurs visuels et système d'imagerie présentant une dépendance angulaire minimale
DE102011115589A1 (de) 2011-10-11 2013-04-11 Giesecke & Devrient Gmbh Sicherheitselement
DE102012015900A1 (de) * 2012-08-10 2014-03-06 Giesecke & Devrient Gmbh Sicherheitselement mit farbeffekterzeugendem Gitter
DE102012108169A1 (de) 2012-09-03 2014-05-28 Ovd Kinegram Ag Sicherheitselement sowie Sicherheitsdokument
KR101783133B1 (ko) * 2016-03-14 2017-09-28 고려대학교 산학협력단 높은 색재현성 플라즈모닉 컬러 필터

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102015010191A1 (de) 2017-02-09
CN107949484A (zh) 2018-04-20
EP3331709A1 (fr) 2018-06-13
CN107949484B (zh) 2019-08-23
KR102511203B1 (ko) 2023-03-16
KR20180037970A (ko) 2018-04-13
WO2017021000A1 (fr) 2017-02-09
CA2993901A1 (fr) 2017-02-09
JP2018528486A (ja) 2018-09-27

Similar Documents

Publication Publication Date Title
EP3331709B1 (fr) Élément de sécurité muni d'un réseau sub-longueur d'onde
WO2016012084A1 (fr) Élément de sécurité muni d'un réseau sub-longueur d'onde
EP2766192B1 (fr) Élément de sécurité
EP2882598B1 (fr) Élément de sécurité comportant une structure produisant un effet coloré
EP2710416B1 (fr) Réseau à deux dimensions périodiques pour le filtrage chromatique
EP3233512B1 (fr) Élément de sécurité transparent variable optiquement
EP2228671B1 (fr) Elément de sécurité
WO2014187665A1 (fr) Élément optiquement variable
DE102011121588A1 (de) Sicherheitselement für Sicherheitspapiere, Wertdokumente oder dergleichen
DE102009012300A1 (de) Sicherheitselement mit mehrfarbigem Bild
DE102014011425A1 (de) Sicherheitselement zur Herstellung von Wertdokumenten
EP3317111B1 (fr) Élément de sécurité comportant une grille filtrant les couleurs
WO2018114034A1 (fr) Élément de sécurité holographique et son procédé de fabrication
EP3541630B1 (fr) Élément de sécurité muni d'un réseau sub-longueur d'onde
EP3727870B1 (fr) Élément de sécurité comprenant une nanostructure à deux dimensions et procédé de fabrication pour cet élément de sécurité
EP3609718B1 (fr) Élément de sécurité et son procédé de fabrication
EP3542196B1 (fr) Élément de sécurité muni d'un réseau sub-longueur d'onde

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180306

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190321

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1177946

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502016006599

Country of ref document: DE

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190911

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191211

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191211

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200113

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502016006599

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200112

26N No opposition filed

Effective date: 20200615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190911

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230520

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20230801

Year of fee payment: 8

Ref country code: AT

Payment date: 20230718

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240731

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240723

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240724

Year of fee payment: 9