WO2017021000A1 - 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

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Publication number
WO2017021000A1
WO2017021000A1 PCT/EP2016/001291 EP2016001291W WO2017021000A1 WO 2017021000 A1 WO2017021000 A1 WO 2017021000A1 EP 2016001291 W EP2016001291 W EP 2016001291W WO 2017021000 A1 WO2017021000 A1 WO 2017021000A1
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WO
WIPO (PCT)
Prior art keywords
security element
grid
line
grating
plane
Prior art date
Application number
PCT/EP2016/001291
Other languages
German (de)
English (en)
Inventor
Hans Lochbihler
Original Assignee
Giesecke & Devrient Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke & Devrient Gmbh filed Critical Giesecke & Devrient Gmbh
Priority to CN201680051540.XA priority Critical patent/CN107949484B/zh
Priority to CA2993901A priority patent/CA2993901A1/fr
Priority to KR1020187003796A priority patent/KR102511203B1/ko
Priority to EP16750612.0A priority patent/EP3331709B1/fr
Priority to JP2018526294A priority patent/JP2018528486A/ja
Publication of WO2017021000A1 publication Critical patent/WO2017021000A1/fr

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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
    • B42D25/20—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 documents of value, 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 bars 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 gratings are known, for example from DE 102009012299 AI, DE 102009012300 AI or
  • One-dimensional periodic gratings may have sub-wavelength color filter characteristics when 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.
  • DE 3248899 C2 describes 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-refraction (HRI) layer, with the following for the refractive indices: nHRi> n 2 and ni «n 2 ⁇ ⁇ 3.
  • HRI high-refraction
  • 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 background is required to perceive a color effect.
  • WO 2012/019226 Al also describes embossed subwavelength gratings with a rectangular profile, on the plateaus of which metal particles or metallic nanoparticles are printed. This grating shows color or polarization effects in transmission.
  • subwavelength gratings are known as angle-dependent color filters which have a metallic or semimetallic bi-layer arrangement, for example from DE 102011115589 A1 or from Z.
  • Ye et al “Compact Color Filter and Polarizer of Bilayer Metallic Nanowire Grating Based on Surface Pias - mon Resonances ", Plasmonics, 8, 555-559 (2012), wherein the metallization is realized by vapor deposition and embedded in a dielectric
  • the approach described in DE 102011115589 A1 which discloses a security element with the above mentioned features, is based on an arrangement of two wire meshes of the same period shifted by half a period from each other and made of metallic or semi-metallic (eg 70 nm thick ZnS) wires.
  • 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 polarized resolved plasmon 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).
  • the security element described in WO 2012/136777 A1 is 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.
  • a security element for the production of value documents comprising a dielectric substrate, a first periodic line grid structure embedded in the substrate, of a plurality of longitudinally extending in a longitudinal direction and in a first Level arranged first grid bars with intermediate first grid gaps and embedded in the substrate, a second line grid structure of the same period from along the longitudinal direction extending second grid bars with intermediate second grid gaps, wherein the second line grating structure is located in a parallel second plane with respect to the first plane above the first line grating structure and wherein the second line grating structure is inverted to the first line grating structure such that in plan view of the first plane the second grating webs over the first grating gaps and the lie second grid gaps over the first grid bars, wherein - the security element in transmission view produces a color effect and the grid bars of the first line grid structure and the grid bars of the second line grid structure each consist of a double layer, built up of a layer of high refractive
  • 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 webs is less than the Mödulationstiefe, so as the distance of the planes of the line grid structures, so that forms no closed film. 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.
  • the vertical distance between the first and the second lattice webs ie the modulation depth of the structure
  • the vertical distance measurement refers to the two levels, which can be defined, for example, by the same areas of the first and second line grid structure, ie, for example, on the underside of the grid bars or the top of the grid bars.
  • the vertical distance is of course perpendicular to the " plane to measure, that is, the height difference between rectified surfaces of the grid bars.
  • 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 in such a way 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.
  • each line grid has lattice webs of a double layer
  • Fig. 2a-b the spectral dependence of the reflection and transmission of
  • Security element of FIG. 1 with variation of the modulation depth Fig. 4a-b the spectral dependence of the reflection and transmission of the security element of Fig. 1 with variation of the modulation depth and for a different material combination than in Fig. 3a-b
  • Fig. 5 color values in the LCh color space for reflection and transmission for the security element 1 with variation of a layer density in the double layer and for different viewing angles
  • Fig. 6a-b a CIE-1931 color diagram for reflection and transmission of
  • Fig. 7a-b is a CIE-1931 color chart for reflection and transmission of the
  • Fig. 8a-b is a CIE-1931 color chart for reflection and transmission of the
  • FIGS. 9a-b are views similar to FIGS. 9a-b for a further embodiment of the security element.
  • FIG. 1 shows a sectional view of a security element S which has a double line grid embedded in a substrate, consisting of two line grid 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 LI.
  • 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 LI) is thus t2 + t4.
  • a second line lattice structure 6 with second lattice webs 7, likewise made of the double layer of high refractive index material 7a of a thickness t3 and metallic material 7b of a thickness t1 is located in a plane L2.
  • 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 continuous 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 difference in height between the first line grating structure 2 and the second line grating structure 6 (corresponding to the spacing of the planes LI 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 with the Measure h - (t2 + t4) is given between the two line grid structures en 2 and 6.
  • 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 nHRi and is surrounded by dielectrics, namely a dielectric interlayer 5 and a dielectric cover layer 10.
  • the refractive indices of these surrounding materials usually differ very little and are approximately m.
  • the refractive index nHRi of the high refractive index material is above that of the surrounding material, e.g. by at least 0.3 absolutely.
  • the security element S of FIG. 1 reflects incident radiation E as reflected radiation R. Furthermore, 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 be achieved, for example, by first applying the first line grid structure 2 and then 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 tl 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 as a dielectric material, which 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 can, for example, in Ormocer, copied or duplicated by galvanic impression.
  • 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.
  • Such manufacturing methods for sub-wavelength grating structures and for motifs consisting of different sub-wavelength structures are known to the person skilled in the art, for. B. from the relevant in this respect fully incorporated here DE 102011115589 AI.
  • the optical properties of the security element are discussed as examples for aluminum and the high-index materials zinc sulfide (ZnS) and titanium dioxide (Ti0 2 ) in the visible wavelength range.
  • n l, 52.
  • the profile geometry of the grid bars rectangular is. In practice occurring small deviations from this ideal rectangular shape, such. As a trapezoidal shape, have no great influence on the visual appearance and lead to similar results as for rectangular grid.
  • tzns 160 nm.
  • the incident light is uhpolarized.
  • Fig. 2a shows on the y-axis the reflection as a function of the wavelength plotted on the x-axis for different angles of incidence, namely 0 °, 15 ° and 30 °.
  • Fig. 2b shows analog transmission.
  • the angle of incidence ⁇ is defined in FIG.
  • 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 relate to the influence of the modulation depth h on the transmission spectrum.
  • the modulation depth is between 180 nm and
  • 240 nm varies.
  • 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 relate 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 T1O2 instead of ZnS.
  • the blue component in the spectrum is significantly higher here, since T1O2 has a much lower absorption in the blue.
  • the transmission in the red is higher overall.
  • the transmission or reflection spectra were folded with the emission curve of a D65 standard lamp and the sensitivity of the human eye and the color coordinates X, Y, Z were calculated.
  • the D65 lighting corresponds approximately to daylight.
  • the XYZ coordinates were then converted into the color values LCh.
  • h 210 nm
  • 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 have been converted into x, y color coordinates and are shown in FIG. 6a, b in the CIE 1931 color space.
  • the white point is marked "WP.”
  • the triangle defines the range of colors that can usually be displayed on screens:
  • Fig. 7a, b shows the CIE 1931 color diagrams in reflection (Fig. 7a) and in Figs
  • Figures 8a and 8b show the x, y color coordinates of a security element similar to that of Figures 7a and 7b but with different lattice 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.
  • the tilting color in transmission can be selected by changing the lattice parameters, in particular the thickness of the high-index layer and the lattice 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.
  • 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.
  • There are also other orientations of areas conceivable. By finely graduated oriented areas, for example, running effects in transmission can be generated. For this purpose, reference is made by way of example to DE 102011115589 AI.
  • FIGS. 10 a and b show a motif of a butterfly and the number "12", wherein the square area does not contain any additional protruding coating around the number "12" (area 16 in FIG. 10 b).
  • the security element can serve as a transparent window of banknotes.It can also be partially overprinted in color
  • One or both materials of the bilayer can also be partially removed, for example by laser irradiation with ultrashort pulses, or combined with high refractive transparent holograms, Such holograms can also act as reflection features
  • a portion of the security element S can be on an absorbing surface Underground are 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 field 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.

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

Abstract

L'invention concerne un élément de sécurité pour la production de documents de valeur, par exemple de billets de banque, de chèques ou similaires, lequel présente : un substrat diélectrique (1), une première structure de réseau linéaire périodique (2) incorporée dans le substrat (1) et composée de plusieurs premiers éléments de liaison de réseau (3) orientés dans une direction longitudinale, agencés dans un premier plan (L1), et entre lesquels 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) et composée de seconds éléments de liaison de réseau (7) orientés dans la direction longitudinale et entre lesquels se trouvent de seconds intervalles de réseau (8). La seconde structure de réseau linéaire (6) se trouve par rapport au premier plan (L1) au-dessus de la première structure de réseau (2) dans un second plan parallèle (L2), la seconde structure de réseau linéaire (6) est inversée par rapport à la première structure de réseau linéaire (2) de telle manière que, vus d'en haut dans le premier plan (L1), les seconds éléments de liaison 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 premiers éléments de réseau (3), et l'élément de sécurité (S), observé par transmission (T), produit un effet de couleur. Les éléments de liaison de réseau (3) de la première structure de réseau linéaire (2) et les éléments de liaison de réseau (7) de la seconde structure de réseau linéaire (6) sont chacun composés d'une double couche constituée d'une couche composée d'un matériau à indice de réfraction élevé (3a, 7a) et d'une couche composée d'un matériau métallique (3b, 7b).
PCT/EP2016/001291 2015-08-06 2016-07-25 Élément de sécurité muni d'un réseau sub-longueur d'onde WO2017021000A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201680051540.XA CN107949484B (zh) 2015-08-06 2016-07-25 具有亚波长光栅的防伪元件
CA2993901A CA2993901A1 (fr) 2015-08-06 2016-07-25 Element de securite muni d'un reseau sub-longueur d'onde
KR1020187003796A KR102511203B1 (ko) 2015-08-06 2016-07-25 서브파장 격자를 가지는 보안 요소
EP16750612.0A EP3331709B1 (fr) 2015-08-06 2016-07-25 Élément de sécurité muni d'un réseau sub-longueur d'onde
JP2018526294A JP2018528486A (ja) 2015-08-06 2016-07-25 サブ波長回折格子を有するセキュリティエレメント

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015010191.9 2015-08-06
DE102015010191.9A DE102015010191A1 (de) 2015-08-06 2015-08-06 Sicherheitselement mit Subwellenlängengitter

Publications (1)

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WO2017021000A1 true WO2017021000A1 (fr) 2017-02-09

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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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018188787A1 (fr) * 2017-04-11 2018-10-18 Giesecke+Devrient Currency Technology Gmbh Élément de sécurité et son procédé de fabrication
WO2019121965A3 (fr) * 2017-12-19 2019-08-15 Giesecke+Devrient Currency Technology Gmbh Document de valeurs
WO2020126065A1 (fr) * 2018-12-17 2020-06-25 Giesecke+Devrient Currency Technology Gmbh Élément de sécurité actif dans le domaine des thz et son procédé de fabrication
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

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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
DE102018003603A1 (de) * 2018-05-03 2019-11-07 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement, Datenträger und Verwendung
AT523690B1 (de) * 2020-03-16 2022-03-15 Hueck Folien Gmbh Flächiges Sicherheitselement mit optischen Sicherheitsmerkmalen

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WO1983000395A1 (fr) * 1981-07-20 1983-02-03 Rca Corp Filtre colore soustractif a diffraction sensible a l'angle d'incidence d'une lumiere polychromatique
DE102011115589A1 (de) * 2011-10-11 2013-04-11 Giesecke & Devrient Gmbh Sicherheitselement
WO2014023415A1 (fr) * 2012-08-10 2014-02-13 Giesecke & Devrient Gmbh Élément de sécurité comportant une structure produisant un effet coloré

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KR20180037970A (ko) 2018-04-13
CN107949484A (zh) 2018-04-20
EP3331709A1 (fr) 2018-06-13
EP3331709B1 (fr) 2019-09-11
JP2018528486A (ja) 2018-09-27
DE102015010191A1 (de) 2017-02-09
CN107949484B (zh) 2019-08-23
CA2993901A1 (fr) 2017-02-09

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