EP0779863B1 - Element optique visuellement identifiable - Google Patents

Element optique visuellement identifiable Download PDF

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Publication number
EP0779863B1
EP0779863B1 EP95929745A EP95929745A EP0779863B1 EP 0779863 B1 EP0779863 B1 EP 0779863B1 EP 95929745 A EP95929745 A EP 95929745A EP 95929745 A EP95929745 A EP 95929745A EP 0779863 B1 EP0779863 B1 EP 0779863B1
Authority
EP
European Patent Office
Prior art keywords
reflectivity
substrate
metallization
optical element
carrier
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.)
Expired - Lifetime
Application number
EP95929745A
Other languages
German (de)
English (en)
Other versions
EP0779863A1 (fr
Inventor
Werner Reinhart
Jürgen Herrmann
Thomas Stange
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.)
Leonhard Kurz Stiftung and Co KG
Deutsche Bundesbank
Original Assignee
Deutsche Bundesbank
Leonhard Kurz GmbH and Co KG
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 Deutsche Bundesbank, Leonhard Kurz GmbH and Co KG filed Critical Deutsche Bundesbank
Publication of EP0779863A1 publication Critical patent/EP0779863A1/fr
Application granted granted Critical
Publication of EP0779863B1 publication Critical patent/EP0779863B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B42D15/02—Postcards; Greeting, menu, business or like cards; Letter cards or letter-sheets
    • B42D15/04—Foldable or multi-part cards or sheets
    • B42D15/08—Letter-cards or letter-sheets, i.e. cards or sheets each of which is to be folded with the message inside and to serve as its own envelope for mailing
    • B42D15/085—Letter-cards or letter-sheets, i.e. cards or sheets each of which is to be folded with the message inside and to serve as its own envelope for mailing with special means hiding information
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—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
    • B42D25/373—Metallic materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture

Definitions

  • the invention relates to a visually identifiable, optical element, in particular a security element for Documents of value, e.g. Banknotes, credit cards, ID cards or Check documents or other items to be secured, comprising a carrier with a particularly diffuse reflective surface and a section on the Metallization applied to the visible surface of the support one with a shiny metallic angle appearing surface.
  • a visually identifiable, optical element in particular a security element for Documents of value, e.g. Banknotes, credit cards, ID cards or Check documents or other items to be secured, comprising a carrier with a particularly diffuse reflective surface and a section on the Metallization applied to the visible surface of the support one with a shiny metallic angle appearing surface.
  • optical elements With known optical elements, the appears Metallization before that formed by the carrier Background for metallization either bright or dark. Such an optical element is, for example, in of WO 93/01057.
  • a carrier with a metallization as visually identifiable optical element for Security or decorative purposes, is based on the physically explicable phenomenon that from a certain direction on a smooth metal surface incident light in the form of reflected light in a particular viewing direction from an observer can be perceived.
  • the light does not fall one direction, but acts it is, for example, diffuse daylight or about light from a diffuse light source, so results depending on the orientation of the metallized area to the angle of incidence of the Light a viewing angle range, in the following as Specified angle range from which a viewer is viewed the metallization as high-gloss and bright metallic perceives since much of the within the Angle of incidence reaching the metallization Light is reflected in this specular angle range.
  • the reflectivity dependent on the viewing angle is thus in this is determined by the angle of incidence of the light Specular angle range particularly large, i.e. a lot of the reaching the unit area of the metallization Radiant power is in this specular angle range reflected.
  • the viewing angle appears to the viewer Metallization, on the other hand, is not shiny, but she conveys a metallic gray and matt color impression. Depending on the light reflectivity of the wearer this matt color impression appears compared to the Background either light or dark.
  • metallization becomes any built, especially very thin layer with a understood shiny metallic surface.
  • optical Elements or security elements will be tried, even that inexperienced layperson authenticity information of the secured To make the object visible and at the same time one Counterfeiting, e.g. in the form of a reproduction, under Consideration of known counterfeiting procedures, in particular optical reproduction processes, impossible to make or at least sufficient to complicate. Such optical elements also become Used for decorative purposes.
  • the invention is therefore based on the object optical element of the type described above create that easily and economically is producible and with which an object to be secured can be protected against counterfeiting even more effectively than this is possible with known security elements.
  • This task is done with an optical element like this described at the outset was solved according to the invention by that the visible surface of the wearer has two support areas different levels, especially diffuse reflectivity for light, with a partial area or several partial areas of each of the carrier areas are metallized is or are, and that the reflectivity of the metallization in viewing directions outside of a Gloss angle range is less than the reflectivity of the Carrier area with the higher reflectivity or this essentially corresponds and is larger than that Reflectivity of the carrier area with the lower Reflectivity or this essentially corresponds.
  • the carrier in at least one area higher Light reflectivity and an area less Light reflectivity is divided and the reflectivities of these support areas and the metallization the above described relationships are sufficient, is by means of optical element conveyable to a viewer, visually perceptible information depending on the Viewing angle more diverse; so appears in one certain viewing direction outside the Gloss angle range a metallized sub-area before formed by the carrier area with higher reflectivity Background dark while another metallized Partial area in front of that of the carrier area with less Reflectivity formed background appears bright, provided the reflectivity of the metallization is smaller in the first case and in the second case is greater than the reflectivity of the each of the beam areas considered.- If the Reflectivity of the metallization in one Viewing direction outside the gloss angle range in essentially the reflectivity of the dark carrier area corresponds, i.e.
  • the background is in a matt, metallic dark gray shade and stands out from the light Background appearing dark. If now the optical Element related to the direction of the incident Light is oriented so that a viewer can see the element or the metallized area in the aforementioned Has the gloss angle area in front of the eyes, the Section of the metallization covering the white area of the Carrier partially covered, no longer dark but brilliantly shiny and brilliantly bright. Also on the section of the carrier applied to the black area Metallization appears shiny metallic bright when he in a viewing direction within the Gloss angle range is considered. Here too changes the visually perceptible information when the orientation of the element or the viewing direction is changed.
  • the optical element according to the invention can be produced in a particularly simple and economical manner, but it can also prove to be advantageous, in particular aesthetic aspects, if the at least two areas on the visible surface of the wearer are designed differently.
  • the area of higher light reflectivity can have a light color and the area of lower reflectivity can have a dark color. It is only necessary to ensure that the relationships given above of the reflectivities of the respective surrounding areas of the carrier or of the metallization are observed.
  • the optical element in such a way that the reflectivity of the metallization essentially corresponds to the diffuse reflectivity of the dark gray background, so that for viewing directions that are outside the gloss angle range, the metallization does not stand out from the dark gray background, but only becomes visible to a viewer when viewed within the gloss angle range.
  • each carrier area can have any shape, also in the form of signs or symbols on the carrier can be applied.
  • the area metallization of the carrier areas can in simplest case by a single contiguous Section of a metal layer of any geometric shape be realized, which is the boundary between light and dark covering area applied to this is. But it is also possible that several sub-areas, especially a large number of sub-areas, the two Carrier areas are metallized; so it can Metallization forms a visually perceptible pattern be applied to the carrier.
  • the pattern can be in shape of regularly arranged subareas geometric shape cover the carrier, being between the background of the metallized sub-areas remains visible. It can prove to be special prove advantageous that the metallization in the form of a visually perceptible halftone dot or Line grid is applied to the carrier.
  • the carrier has several Has areas of the same reflectivity. This can be very can be easily realized, e.g. a square Beam or beam section through an imaginary vertical and a horizontal in four square sections is divided, each of which is on a diagonal lying sections are identical and the Form carrier area of higher or lower reflectivity. It is also understood that other conceivable divisions of the wearer in areas higher and lower Light reflectivity detected by the teaching of the invention are.
  • Optical elements according to the invention can also do more than two carrier areas or groups of carrier areas different reflectivity include. The relationships for the reflectivities of the individual areas and the assigned metallizations are then corresponding to apply.
  • the optical element is at least one of the carrier areas with itself depending on the viewing angle varying, different levels of reflectivity educated. I.e. when changing the viewing direction, for example by swiveling the carrier around one in its plane lying axis, not only does it change the Reflectivity of the metallization, for example through transition into the gloss angle range or by leaving the Gloss angle range, but it also changes the Reflectivity of the surrounding metalization Carrier area.
  • the visible area of the support area can for this with an optically effective thin film coating be coated for certain viewing directions for example a white one and for others Viewing directions, for example, a green appearing color impression conveyed.
  • the visible surface of the support area by a to form a suitable coating such that for Viewing directions outside the gloss angle range the coating appears transparent and thus the Reflectivity of the wearer's field of vision underlying carrier area is determined while in a different viewing angle range, especially in Gloss angle range, the coating a colored, e.g. violet background for the metallization forms.
  • An optical one Element can thus be designed so that not only one Transition from a state with against the background dark metallization in a state with against the background of bright metallization can be achieved, but that at the same time Change in the color impression emanating from the wearer, e.g. from white to purple, is brought about.
  • Coatings of the carrier area are also conceivable in viewing directions outside the specular angle range of the metallization appear transparent and thus the Reflectivity of the wearer and the light / dark or dark / light contrast of the metallization in front of the carrier not or hardly influence, but in Viewing directions within the specular angle range a colored, visually perceptible background for the Form metallization.
  • the optical effectiveness of the carrier coating can be on known physical effects, such as extinction or superposition of light waves, are based on or chemical composition of the used for this Substances.
  • the optical element are a diffraction in the metallization and / or structures causing interference are integrated.
  • diffraction structures structures to be designated in the metallic shiny Area areas can also have spectral color effects in on the structure and frequencies of the incident Light in particular also diffraction angles observed outside the actual gloss angle range will.
  • An optical element designed in this way conveys additional information and is therefore in the Even safer in terms of its counterfeiting.
  • the invention also relates to a document holder of value, especially in the form of a section of a Flat material web e.g. made of paper or plastic, which in Improved in terms of its counterfeit security was that he is a security element according to the invention having.
  • a document holder of value especially in the form of a section of a Flat material web e.g. made of paper or plastic, which in Improved in terms of its counterfeit security was that he is a security element according to the invention having.
  • the Carrier of the security element from the Security document holder itself is arranged.
  • FIG. 1 shows a generally known and overall with the reference numeral 1 designated optical element, which as Security element is used.
  • This optical Element 1 comprises a flat carrier 2 with a Subarea 4, on the one not shown in detail Metallization 6 is applied, which consists of a homogeneous Metal layer or through metallic halftone dots that a Generate halftone image, can be formed.
  • the carrier 2 e.g. an optically bright, diffusely reflective Visible surface 8 facing a viewer V and forms the background for the metallization 6, but also may in turn include information such as Watermarks, thin hatching etc.
  • Figure 2 shows a first embodiment of the optical element according to the invention.
  • This includes one Beam 10, the visible surface 12 in an area 14 with high diffuse light reflectivity (sigmaT,>) and in one Area 16 with low diffuse light reflectivity (sigmaT, ⁇ ) is divided.
  • the area 14 mediates one white color impression, so reflects the frequencies of the visible spectrum alike, while the region 16 the visible light is absorbed and therefore appears black.
  • the areas 14, 16 can in turn also provide information include.
  • With the reference numeral 18 is a portion of the Carrier 10 indicated, on which a metallization 20 in not shown is applied.
  • the Metallization 20 or sub-area 18 is located Half in the light area 14 and the other half in the dark area 16.
  • the metallization 20 has one Reflectivity Sigma that is in one viewing direction outside of that explained in connection with FIG Gloss angle range is smaller than the reflectivity sigmaT, but> the area 14 with high reflectivity is higher than the reflectivity sigmaT, ⁇ the area 16 with low reflectivity.
  • the sub-area 18 is made considered a direction that takes into account the incident light outside the gloss angle range lies, the metallization 20 appears before the bright Area 14 background dark while section the metallization 20, which is on the dark carrier region 16 is applied, appears bright. So it can be done using a and the same metallization different from each other convey optical information to a viewer will.
  • In viewing directions within the The metallization appears opposite the gloss angle range two carrier areas 14, 16 bright because of the reflectivity a smooth metallic surface inside your Gloss angle range is greater than the reflectivity of the diffusely reflective support.
  • Figure 3 shows another embodiment of the optical element according to the invention, which differs from that in FIG. 2 differs in the embodiment shown, that instead of a coherent, both carrier areas covering different reflectivity areas Metallization 20 two metallized subregions 24, 26 are provided on a carrier 28, the partial area 24 within a bright carrier area 30 and the Partial area 26 within a dark carrier area 32 lies.
  • the Subregions 24, 26 can also have different shapes Have symbols.
  • FIG 4 shows a particularly preferred embodiment of the optical element according to the invention.
  • the metallization is in the form of a visible surface in the case shown 34 of a carrier 36 covering regular pattern applied this.
  • the pattern is through metallized square sections 38, which are in the manner of a Touch checkerboard pattern at the corners, trained.
  • the Metallized sub-areas 38 appear in Viewing directions outside the gloss angle range against the light background of a carrier area 40 with high reflectivity dark.
  • a support area 42 with has low light reflectivity in the case shown a visible surface in such a shade of gray that the metallized covering this carrier area 42
  • Subareas 38 in a viewing direction outside the Gloss angle area alpha from the gray background is not stand out and therefore not perceived by a viewer can be (but this is not shown here).
  • the reflectivity corresponds to the metallization sigmaM essentially the reflectivity sigmaT, ⁇ des Carrier area 42.
  • the carrier area 42 therefore appears gray over its entire length. That in FIG. 4 illustrated pattern can only on the carrier area 42 are perceived when the carrier area 42 in a Direction considered within the gloss angle range becomes.
  • Such a security element can also be used by one Inexperienced laypersons can be safely handled and understood.
  • the Metallization also through various forms of point or Line grids can be formed, which form a halftone image 52 produce.
  • the halftone dots 50 are shown in FIG Fall onto a support area 54 with high Light reflectivity applied.
  • On a carrier area 56 with low light reflectivity is a metallization in Shape of a line grid of essentially parallel mutually extending strips 58 applied.
  • FIG. 6 shows a further preferred embodiment of the optical element according to the invention, in which a carrier 60 into several areas 62 and 64 of the same reflectivity is divided.
  • the areas with the reference numeral 62 have lower reflectivity and therefore appear dark, while the areas 64 have a high reflectivity and as a result appear bright.
  • arranged areas 62 and 64 is a metallization 66 or 68 in the form of metallic numbers combining Grid points provided.
  • carrier areas 62 and 64 is a Metallization in the form of a letter on the Carrier 60 applied.
  • optical elements shown in Figures 2 to 6 or the visible surfaces of the carrier areas 14, 16, 30, 42, 40 42 can by means of an optically effective thin film coating be designed so that their reflectivity in Dependence on the lighting or viewing angle changed. It is e.g. possible that the carrier area 64 of the carrier 60 shown in Figure 6 in a certain Viewing direction appears white, in another However, the viewing direction is a colored background forms for the rasterized metallization 68.
  • the shape to be metallized the shape of the number "10" having partial area of the carrier area 64 of this Partial area darkened optically, in particular blackened, becomes, it is possible to provide the grid so that the reflectivity of the grid-shaped in the gloss angle range Metallization 68 of the reflectivity of the carrier region 64 corresponds essentially, so that in the gloss angle range the symbol represented by the grid metallization is not or hardly noticeable.
  • Fig. 7 shows a further advantageous embodiment of the optical element according to the invention, in which a entire visible surface 70 of a carrier 72 forming Carrier area 74 by a suitable optically effective Thin film coating, in particular an effect pigment, see above is designed so that it is dependent on the lighting or Viewing angle a varying reflectivity having; so the carrier area 74 conveys Viewing in a first viewing direction first color impression and when viewed in a second Viewing direction a different color impression.
  • a Section 76 of the carrier area 74 carries one Metallization 78 that is in a viewing angle range outside their gloss angle range alpha compared to Carrier area 74 appears dark in another Viewing direction, especially within your Gloss angle range, however, bright.
  • the surface of the Metallization 78 comprises relief-like, essentially parallel and shiny metallic Elevations 80, with valleys 82 between the elevations 80 an image that gives a metallic matt impression Have surface structure 84.
  • the optical element in one direction within the Gloss angle range alpha and essentially perpendicular to appears in the linearly extended surveys Metallization 78 shiny metallic light.
  • essentially parallel to the Elevations 80 becomes the one provided in the valleys 82
  • Surface structure 84 visible and thus optically effective, so that for a viewer a matt, metallic gray Image impression is conveyed.
  • FIG. 8 shows a document carrier 90 with a Security element 92.
  • the document carrier 90 comprises a flat material web made of plastic, such as in particular for the production of credit cards or the like Is used, and has on its visible surface 94 a bright area 96 and a dark area appearing area 98 on by a metallization in the form of a checkered arrangement of metallized ones Subregions 100 are covered. How this works Security document carrier 90 designed according to the invention corresponds to the mode of operation in connection with the preceding figures explained optical elements.

Landscapes

  • Credit Cards Or The Like (AREA)
  • Glass Compositions (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Laser Surgery Devices (AREA)
  • Gyroscopes (AREA)
  • Optical Couplings Of Light Guides (AREA)

Claims (14)

  1. Elément optique, visuellement identifiable, en particulier un élément de sécurité pour des documents de valeur, par exemple des billets de banque, des cartes de crédit, des pièces d'identité ou des chèques, ou d'autres objets à mettre en sécurité, comprenant un support avec une surface visible réfléchissante en particulier de façon diffuse et une métallisation appliquée par endroits sur la surface visible du support avec une surface à l'aspect brillant métallique vue sous un angle de brillance, caractérisé en ce que la surface visible (12, 34) du support (10, 28, 36) présente deux zones supports (14, 16 ; 30, 32 ; 40, 42) avec un pouvoir de réflexion différent, en particulier diffuse, pour la lumière, une zone partielle (18, 24, 26) ou plusieurs zones partielles (38), chacune des deux zones supports (14, 16 ; 30, 32 ; 40, 42) étant métallisée(s), et en ce que le pouvoir de réflexion (σM) de la métallisation dans les directions d'observation à l'extérieur d'une zone d'angle de brillance (α) est plus faible que le pouvoir de réflexion de la zone support (14, 30, 40, 54, 64) avec le pouvoir de réflexion plus élevé (σT>) ou correspond sensiblement à celui-ci et est supérieur au pouvoir de réflexion de la zone support (16, 32, 42, 56) avec le pouvoir de réflexion plus faible (σT<) ou correspond sensiblement à celui-ci.
  2. Elément optique selon la revendication 1, caractérisé en ce que la métallisation est appliquée sur le support sous la forme d'un réseau de points ou de lignes (50) générant une image en demi-teinte (52) visuellement perceptible
  3. Elément optique selon la revendication 1 ou 2, caractérisé en ce que la métallisation est appliquée sur le support en formant un modèle visuellement perceptible, un caractère, un symbole ou une figure.
  4. Elément optique selon la revendication 3, caractérisé en ce que la métallisation recouvre le support (36) sous la forme de zones partielles (38) régulièrement disposées et en forme de losanges.
  5. Elément optique selon une ou plusieurs des revendications précédentes, caractérisé en ce que le support (60) présente plusieurs zones (62, 64) avec un pouvoir de réflexion identique.
  6. Elément optique selon une ou plusieurs des revendications précédentes, caractérisé en ce que le support présente plus de deux zones avec un pouvoir de réflexion différent.
  7. Elément optique selon une ou plusieurs revendications, caractérisé en ce qu'on utilise des métaux avec un pouvoir de réflexion différent pour la métallisation par endroits des zones supports avec un pouvoir de réflexion différente.
  8. Elément optique selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'au moins l'une des zones supports (14, 16 ; 30, 32 ; 40, 42) est conçue avec un pouvoir de réflexion variant en fonction de l'angle d'observation.
  9. Elément optique, visuellement identifiable, en particulier un élément de sécurité pour des documents de valeur, par exemple billets, cartes de crédit, pièces d'identité ou chèques, ou d'autres objets à mettre en sécurité, comprenant un support avec une surface visible avec réflexion en particulier diffuse et une métallisation appliquée par endroits sur la surface visible du support avec une surface à l'aspect brillant métallique vue sous un angle de brillance, caractérisé en ce que la surface visible (70) du support (72) présente une zone support (74) avec un pouvoir de réflexion variant en fonction de l'angle d'éclairage et de l'angle d'observation, et en ce que le support est conçu de façon qu'il existe des directions d'observation en dehors d'une zone d'angle de brillance (α), dans lesquelles le pouvoir de réflexion (σM) de la métallisation (78) est plus faible que le pouvoir de réflexion (σT) de la zone support (74) ou correspond sensiblement à celui-ci, et qu'il existe d'autres directions d'observation, dans lesquelles le pouvoir de réflexion (σM) de la métallisation (78) est supérieur au pouvoir de réflexion (σT) de la zone support (74) ou correspond sensiblement à celui-ci.
  10. Elément optique selon une ou plusieurs des revendications précédentes, caractérisé en ce que la zone support (74) présente une enduction à couche mince efficace au plan optique.
  11. Elément optique selon une ou plusieurs des revendications précédentes, caractérisé en ce que des structures intégrant une diffraction et/ou une interférence sont intégrées dans la métallisation (78).
  12. Elément optique selon une ou plusieurs des revendications précédentes, caractérisé en ce que la métallisation (78) comprend des éminences (80) en relief, sensiblement parallèles et d'un brillant métallique, et que les creux (82) entre les éminences présentent une structure de surface (84) donnant un aspect d'image mat métallique.
  13. Support pour documents de valeur, en particulier sous la forme d'une bande de matériau plat en papier ou plastique, caractérisé par un élément de sécurité (92) optique selon une ou plusieurs des revendications 1 à 11.
  14. Support de documents de valeur selon la revendication 13, caractérisé en ce que le support de l'élément de sécurité (92) est formé par le support pour documents de valeur (90) même.
EP95929745A 1994-09-09 1995-08-31 Element optique visuellement identifiable Expired - Lifetime EP0779863B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4432062A DE4432062C1 (de) 1994-09-09 1994-09-09 Visuell identifizierbares optisches Element
DE4432062 1994-09-09
PCT/DE1995/001193 WO1996007547A1 (fr) 1994-09-09 1995-08-31 Element optique visuellement identifiable

Publications (2)

Publication Number Publication Date
EP0779863A1 EP0779863A1 (fr) 1997-06-25
EP0779863B1 true EP0779863B1 (fr) 1998-07-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95929745A Expired - Lifetime EP0779863B1 (fr) 1994-09-09 1995-08-31 Element optique visuellement identifiable

Country Status (14)

Country Link
US (1) US6623042B1 (fr)
EP (1) EP0779863B1 (fr)
JP (1) JPH10505022A (fr)
CN (1) CN1054574C (fr)
AT (1) ATE168075T1 (fr)
AU (1) AU685318B2 (fr)
BR (1) BR9508904A (fr)
CA (1) CA2199503C (fr)
DE (2) DE4432062C1 (fr)
ES (1) ES2119463T3 (fr)
HK (1) HK1003429A1 (fr)
RU (1) RU2136508C1 (fr)
TW (1) TW400284B (fr)
WO (1) WO1996007547A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351129A1 (de) * 2003-11-03 2005-06-16 Ovd Kinegram Ag Diffraktives Sicherheitselement mit einem Halbtonbild
US7040663B1 (en) 1999-02-23 2006-05-09 Giesecke & Devrient, Gmbh Value document

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO484797A0 (en) 1997-01-29 1997-02-20 Securency Pty Ltd Printed matter producing reflective intaglio effect
AU733183C (en) * 1997-01-29 2005-01-20 Securency International Pty Ltd Printed matter producing reflective intaglio effect
DE19749789A1 (de) * 1997-11-11 1999-05-12 Bundesdruckerei Gmbh Sicherheitsmerkmal für ein Wert- oder Sicherheitsdokument mit fraktalem Lamellensystem
US7047883B2 (en) * 2002-07-15 2006-05-23 Jds Uniphase Corporation Method and apparatus for orienting magnetic flakes
DE10221491A1 (de) 2002-05-14 2003-12-04 Kurz Leonhard Fa Optisch variables Flächenmuster
GB2394696B (en) * 2002-11-01 2004-09-29 Rue De Int Ltd Improvements in security papers
US7063924B2 (en) 2002-12-20 2006-06-20 Eastman Kodak Company Security device with patterned metallic reflection
CA2570965A1 (fr) * 2005-12-15 2007-06-15 Jds Uniphase Corporation Dispositif de securite a caracteristiques metameriques utilisant des flocons de pigments diffractifs
US9533523B2 (en) 2006-05-31 2017-01-03 Sicpa Holding Sa Reflective features with co-planar elements and processes for making them
US8070186B2 (en) 2006-05-31 2011-12-06 Cabot Corporation Printable reflective features formed from multiple inks and processes for making them
US20070279718A1 (en) * 2006-05-31 2007-12-06 Cabot Corporation Reflective features with co-planar elements and processes for making them
RU2326006C1 (ru) * 2006-12-21 2008-06-10 Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак") Защитный элемент (варианты), способ его изготовления, защищенный от подделки материал и ценный документ
GB2456500B (en) * 2007-10-23 2011-12-28 Rue De Int Ltd Improvements in security elements
FR2932116B1 (fr) † 2008-06-05 2010-07-30 Oberthur Technologies Document fiduciaire ou assimile comportant des motifs sous forme d'a-plats ainsi qu'une impression en taille douce, et son procede de fabrication
DE102013108906A1 (de) 2013-08-19 2015-02-19 Ovd Kinegram Ag System und Verfahren zum Herstellen eines individualisierten Sicherheitselements
JP6500386B2 (ja) * 2014-10-21 2019-04-17 凸版印刷株式会社 表示体、並びにこれを備えた転写箔及び物品
TWI625582B (zh) * 2016-10-31 2018-06-01 元太科技工業股份有限公司 識別元件、顯示器、識別元件的製造方法以及形成顯示圖案的方法
US10657853B2 (en) 2016-10-31 2020-05-19 E Ink Holdings Inc. Identifiable element, display device, method of manufacturing the same, and method of forming a display pattern
CN115230363B (zh) * 2021-04-25 2024-03-29 中钞特种防伪科技有限公司 光学防伪元件及其设计方法、防伪产品

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892385A (en) * 1981-02-19 1990-01-09 General Electric Company Sheet-material authenticated item with reflective-diffractive authenticating device
CH653161A5 (de) * 1981-10-27 1985-12-13 Landis & Gyr Ag Dokument mit einem sicherheitsmerkmal und verfahren zur echtheitspruefung des dokumentes.
CH659433A5 (de) * 1982-10-04 1987-01-30 Landis & Gyr Ag Dokument mit einem beugungsoptischen sicherheitselement.
DE3866230D1 (de) * 1988-03-03 1991-12-19 Landis & Gyr Betriebs Ag Dokument.
GB8821150D0 (en) * 1988-09-09 1988-10-12 De La Rue Co Plc Security device
US5142383A (en) * 1990-01-25 1992-08-25 American Banknote Holographics, Inc. Holograms with discontinuous metallization including alpha-numeric shapes
DE4030493A1 (de) * 1990-09-26 1992-04-02 Gao Ges Automation Org Mehrschichtiger datentraeger und verfahren zu seiner herstellung
DE69112823T3 (de) * 1991-07-10 2003-01-30 Banque De France Treuhanddokument oder Sicherheitsdokument mit Antifälschungsvorrichtung und Verfahren zur Herstellung eines solchen Dokumentes.
DE4200746A1 (de) * 1992-01-14 1993-07-15 Inform Vertriebsgesellschaft F Maschinenlesbarer ausweis und lesegeraet hierfuer
DE4423293C2 (de) * 1994-07-02 1996-09-26 Kurz Leonhard Fa Strukturanordnung mit beugungsoptisch wirksamer Reliefstruktur
DE19836813A1 (de) * 1998-08-14 2000-02-24 Bundesdruckerei Gmbh Wert- und Sicherheitsdokument mit optisch anregbaren Farbstoffen zur Echtheitsprüfung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7040663B1 (en) 1999-02-23 2006-05-09 Giesecke & Devrient, Gmbh Value document
DE10351129A1 (de) * 2003-11-03 2005-06-16 Ovd Kinegram Ag Diffraktives Sicherheitselement mit einem Halbtonbild
DE10351129B4 (de) * 2003-11-03 2008-12-24 Ovd Kinegram Ag Diffraktives Sicherheitselement mit einem Halbtonbild
US7719733B2 (en) 2003-11-03 2010-05-18 Ovd Kinegram Ag Diffractive security element comprising a half-tone picture

Also Published As

Publication number Publication date
CA2199503A1 (fr) 1996-03-14
CN1054574C (zh) 2000-07-19
AU3340495A (en) 1996-03-27
WO1996007547A1 (fr) 1996-03-14
RU2136508C1 (ru) 1999-09-10
DE4432062C1 (de) 1995-11-30
CA2199503C (fr) 2006-05-09
HK1003429A1 (en) 1998-10-30
ATE168075T1 (de) 1998-07-15
TW400284B (en) 2000-08-01
CN1157595A (zh) 1997-08-20
EP0779863A1 (fr) 1997-06-25
US6623042B1 (en) 2003-09-23
AU685318B2 (en) 1998-01-15
JPH10505022A (ja) 1998-05-19
ES2119463T3 (es) 1998-10-01
DE59502776D1 (de) 1998-08-13
BR9508904A (pt) 1998-01-13

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