EP1618007B1 - Caracteristique de securite et document correspondant, procede pour produire cette caracteristique de securite - Google Patents

Caracteristique de securite et document correspondant, procede pour produire cette caracteristique de securite Download PDF

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Publication number
EP1618007B1
EP1618007B1 EP04728323A EP04728323A EP1618007B1 EP 1618007 B1 EP1618007 B1 EP 1618007B1 EP 04728323 A EP04728323 A EP 04728323A EP 04728323 A EP04728323 A EP 04728323A EP 1618007 B1 EP1618007 B1 EP 1618007B1
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EP
European Patent Office
Prior art keywords
security feature
information
document
information structure
wave guide
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
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EP04728323A
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German (de)
English (en)
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EP1618007A2 (fr
Inventor
Hermann Hecker
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—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

Definitions

  • the invention relates to a security feature comprising an information structure arranged along a lateral extent of the feature and an optically effective imaging structure, by means of which information of the information structure can be read in dependence on a predetermined condition.
  • the invention also relates to a document with the security feature.
  • the invention relates to a method for producing the security feature, wherein a carrier is provided and along a lateral extent on the carrier an information structure is applied, which is suitable for receiving information, and on the information structure, an optically effective imaging structure is applied by means of which information of the information structure can be read out in dependence on a predetermined condition.
  • a security feature is conveniently attached to a document.
  • a security feature can be implemented in a particularly simple manner by means of a so-called “tilt image”, which is also known under the abbreviations "MLI” or “CLI” for "laser image".
  • tilt image has a lens structure as an optically active imaging structure along its lateral extent and is realized with an information structure deposited in the lens structure.
  • an image is visible or not or only greatly attenuated visible.
  • tilting images are attached, for example, as a security feature on plastic cards and identity papers.
  • Tipping pictures can be found partly as an object on postcards. The advantage lies in a relatively simple visual testability of the tilting images, which is given even in simple lighting conditions.
  • Such a tilting image is disclosed for example in EP 0 219 012 A2.
  • additional relief lenses can be provided to increase the security against counterfeiting.
  • Tilting images of the type mentioned can be realized by means of different materials, for example as disclosed in DE 100 07 916 A1.
  • the above-described motif change when tilting the document on which the tilting image is located is thus generally realized by means of microlenses.
  • Other forms of implementation may be holograms or thin, multi-reflective layers for iridescent effects.
  • they are diffractive structures that are composed of one or more layers in a lateral extension.
  • the lateral optically effective and diffractive boundary layers serve to image the information stored in the information structure and at the same time generate variability when viewing or reading the deposited information. In this way, the change of subject comes to a standstill.
  • Such light-diffracting, refractive or simply reflecting boundary layers are all arranged parallel to the lateral extent of the security feature.
  • the simple nature of such tilting images which are realized by means of parallel to the lateral extent arranged optically active boundary layers, also has the disadvantage that they are relatively easy to fake.
  • the lens structures of the above-mentioned type are relatively inexpensive and easy to obtain.
  • a lens or diffractive structure of the above type has some surface roughness which may wear out and lead to a change in the appearance of the security feature, which in the worst case may lead to dilution or deterioration of the traceability of the security feature.
  • Tilts of the above type can thus be easily damaged and emulated, because the security is usually only in the deposited motif in combination with the tilting effect, even if in addition a relief according to EP 0 216 947 A1 is provided or the security feature itself according to DE 3 233 197 A1 is hidden.
  • the invention begins, whose object is to provide a security feature and a document with such a security feature that allows increased security, which is particularly caused by increased robustness and variability. Likewise, such a problem arises in a method of manufacturing the security feature and in a method of attaching the security feature to the document. It is also an object of the present invention to specify a method for checking the authenticity of the document.
  • the object is achieved by the invention by means of a security feature of the type mentioned, in which according to the invention the imaging structure is formed by means of a number of light guide elements, wherein a light guide element between an information structure facing and one of the information structure remote end extends and to specification the predetermined condition along its extension forms a finite angle to the lateral extent.
  • the invention is based on the consideration that the optically active boundary layers used to date for tilting images to the detriment parallel to the lateral extent of a security feature, ie perpendicular to an optical axis of the imaging structure layer, are arranged and thus limited in their safety performance. In terms of robustness, these are easy to damage. In terms of variability they have only one degree of freedom due to their geometric orientation.
  • the invention is based on the finding that a security feature can also be realized with optically effective boundary layers which have a different orientation than the lateral extent of the security feature. It has been found that optical fiber elements are surprisingly advantageous in forming an imaging structure for a security feature. In this case, the invention takes into account the consideration that an imaging structure can be formed by means of a sufficient number of the light guide elements.
  • the optically active boundary layers of the light guide elements act photoconductive, so z. B. by total reflection or multiple reflection, to achieve the optically variable effect, which makes a significant difference to the only refractive optically active boundary layers in previously known tilting images.
  • a light guide element As a light guide element, a light passage substantially only in the direction of optical axis of a light guide element allowed, or only in a limited conical angular space around this direction, thereby surprisingly novel optically variable effects can be achieved.
  • a safety-enhancing optical effect which is improved in terms of robustness and variability, the safety performance of which can lie not only in the information stored in the information structure but also in the imaging structure itself.
  • the invention also takes into account the consideration that the predetermined condition, in dependence of which the information of the information structure can be read out, can be varied particularly varied in the case of the proposed security feature.
  • the predetermined condition could, for example, be realized in the form of irradiation and / or viewing of the security feature from a defined direction.
  • the optically variable effect could be realized, for example, in the form of a contrast and / or a brightness difference.
  • the predetermined condition and the optical variable effect preferably cooperate in such a way that upon authenticity testing, e.g. B. when viewing the information structure, an effect of the contrast change and / or Hellig-keits selectedung depending on the viewing angle is recognizable.
  • An optical waveguide element of the proposed security feature extends between an end facing away from the information structure and an end facing away from the information structure and forms a finite angle to the lateral extent along its extent in order to specify the predetermined condition.
  • the manner in which such a light guide element extends between its ends and what angle it forms for the lateral extent provides a degree of freedom that can be particularly useful to provide increased security performance of the security feature.
  • the security feature proposed here thus offers considerably increased variability, which can be used in terms of security performance.
  • optical fiber elements prove themselves, if only because of their non-parallel arrangement for the lateral extension of the security feature, as much more robust compared to commonly used, laterally oriented, light-diffractive boundary layers.
  • an optically active boundary layer is understood as any type of boundary layer which is optically active for electromagnetic waves in the region between the extreme ultraviolet and the far-infrared.
  • a light guide element in any shape for. Example, as a photoconductive optical fiber, such as a suitable glass or polycarbonate, or z. B. as a suitable waveguide of any kind, z.
  • metal or as internally coated micro-holes in a solid material can be realized.
  • Under a light guide element is therefore to be understood in principle any type of arrangement of photoconductive gene layers.
  • a light guide element could be arbitrarily curved and each light guide element of the number could be arranged differently, aligned and formed.
  • the light guide element along its extension forms a fixed angle to the lateral extent, d. H. runs straight.
  • the number of light guide elements is aligned parallel to one another at a fixed angle to the lateral extent. In this way, z. B. reproduce a subject as resolvable information very well.
  • a fixed angle of 90 ° is between 30 ° and 90 °.
  • any intermediate angle could be selected, e.g. B. an angle of 60 °.
  • the information of the information structure can be read particularly well in the direction of the angle. That is, depending on the choice of the angle comes in the case of vertically arranged light guide elements, due to their vertically arranged optically light-conducting boundary layers, the high readout quality at a vertical extension to the lateral readout to conditions. In the case of obliquely arranged light guide elements, the particularly good read quality of the information shifts to one Direction according to the selected finite angle that form the optical fiber elements or their optically active boundary layers for lateral expansion.
  • the number of optical fiber elements is formed by an optical fiber bundle.
  • the light guide elements are arranged directly adjacent to each other.
  • the number of light guide elements could be isolated or embedded as a fiber optic bundle in filling material. This could be a filler material formed by the document material. It is particularly expedient if the filling material increases the reflection properties of the boundary layer of an optical waveguide element.
  • the light guide element has a length which is between 50 microns and 1000 microns.
  • a diameter between 5 .mu.m and 50 .mu.m proves to be advantageous.
  • the security performance of the security feature can be considerably increased by arranging the number of optical waveguide elements in the lateral extent of the feature relative to each other according to a regular characteristic.
  • a two-dimensional orthogonal or hexagonal geometry could be chosen or even a fixed but arbitrary-looking arrangement.
  • the characteristic of the imaging structure could be superimposed on the read-out information of the information structure.
  • a selected motif in its read-out appearance in addition to the motif itself, could have the optical effects superimposed by the characteristic, for example caused by brightness or contrast differences.
  • the characteristic of the imaging structure could be superimposed on the information of the information structure itself. This can advantageously be achieved in that, during the production of the security feature, the information passes through the imaging structure into the information structure be introduced. Upon introduction, the optical effects caused by the characteristic would be transferred to the information structure.
  • Both of the above variants provide a security feature in which an additional security is invisible and unobtrusively hidden, namely given by the characteristic.
  • the type and wavelength of different light sources or lasers could be used to provide increased safety performance.
  • both structures could namely be arranged one above the other particularly simply as a layer sequence. It goes without saying that this is not a necessary requirement. In principle, both structures could merge into each other as desired and be arbitrarily bounded.
  • an aperture surrounding the information in the first layer proves to be advantageous as an additional optical imaging element.
  • an advantageous shading can be provided, in particular for visually perceived motifs, which above all make it difficult or prevent lateral light incidence on the subject so as to support the visually perceived contrast or brightness changes.
  • the invention also teaches a document having a security feature of the above mentioned type.
  • This could be a plastic card or identity card of any kind, e.g. As an ID card or ID card, a driver's license or all kinds of cards, especially from the cashless payment transactions such as credit cards or cash cards.
  • any type of document or object with a safety-related finish will be independent of its form, material or document or use.
  • information light emitting z.
  • motifs such as hard to copy print patterns, personalized information such as images, logos and the like, or even characters, letters, numbers and number strings be introduced into the information structure.
  • the security feature could preferably be located on the surface of the document. It proves to be particularly advantageous according to a preferred embodiment, when the security feature is housed inside the document. It is particularly expedient if the document has an optically transparent region at least in the region of a lateral extent of the security feature. For example, the security feature could be read from the top of the document while the security feature is properly irradiated from the bottom of the document. The readout and irradiation wavelength need not necessarily coincide.
  • the optically transparent region is translucent in the visual wavelength range.
  • the imaging structure is formed in the form of a number of optical fiber elements, wherein the specification of the predetermined condition, the number of optical fiber elements of a fiber optic bundle at a finite Ablenk angle is separated to the axis of the optical fiber bundle, and the imaging structure is applied to the information structure, wherein an optical fiber element facing away from the information structure and one of the information structure facing away from the end, and forms a defined over the Abwennwinkel finite angle to the lateral extent along its extension.
  • the invention is based on the consideration that an imaging structure with light guide elements cut off in an expediently simple manner from a fiber optic bundle or sawing or otherwise disconnect or remove and can be done in this way a particularly favorable production of the security feature.
  • the above-mentioned characteristics of an imaging structure can also be realized easily. For example, optical fibers in a fiber bundle could already be geometrically arranged in a characteristic way.
  • the production method it is provided to arrange the number of optical waveguide elements in the lateral extent of the feature relative to each other according to a regular characteristic and to introduce the information through the optically effective imaging structure layer into the information structure layer, so that thereafter the characteristic of the imaging structure is the information the information structure itself is superimposed.
  • a security feature described above can be attached to a document in any manner, i. E. H. Apply to the surface of a document or completely or partially accommodate inside a document. According to the invention, it proves to be particularly useful to produce the security feature according to the manufacturing method described above as such and then attach to the document. However, a support could also be provided on a document and the security feature could be made on the document according to the manufacturing process described above.
  • An associated method for checking the authenticity of a document of the above type with a security feature of the type mentioned above involves obtaining an optically variable effect depending on the predetermined condition, so that in the finite angle information is read in a certain quality and with increasing deviation from the finite angle the information is read out with altered quality.
  • the angle with good read quality is predetermined by the finite angle which the optically active boundary layer of the light guide element forms with the lateral extent of the security feature.
  • the optically active boundary layers of the light guide elements are aligned non-parallel to the lateral extent.
  • the optically variable effect is effected in such a way that the information is read out with decreasing quality, eg with regard to contrast and / or brightness.
  • the predetermined condition could, in principle, be any convenient condition given by the finite angle or by the light guide elements themselves when reading out the security feature. It proves to be particularly expedient that the predetermined condition is realized in the form of an irradiation and / or a viewing of the document from a direction defined to the finite angle.
  • the optically variable effect can be selected depending on the type of application. It proves to be particularly expedient that the optically variable effect is realized in the form of a contrast and / or brightness difference.
  • FIG. 1 shows a data carrier 1 of the prior art, in which the principle of image formation in a tilted image as a security feature applies.
  • an information structure layer 7 of an optically active imaging structure layer 9 arranged along a lateral extent 5 of the security feature 3 is deposited. Both layers 7 and 9 are located on a corresponding carrier 11 of the data carrier 1.
  • the optically active boundary layers 13 of the optically active imaging structure layer 9 are indicated here as diffraction structures.
  • the optically active boundary layers 13 run parallel to the lateral extent 5 of the optically active imaging structure 9 and thus also parallel to the lateral extent 5 of the identity card 1 itself.
  • the situations 1a and 1b shown by way of example in FIG. 1 each show a fixed predetermined irradiation direction 15a and 15b of an illumination and a direction 17a and 17b which substantially coincides with the irradiation direction. Only in these directions 17a and 17b, caused by the optically active boundary layers 13 of the optically effective imaging structure 9, an image recognizable. The image is best recognizable if the viewing direction coincides with the direction of irradiation 15a and 15b. The image is also recognizable within the strip-shaped angular space described by the directions 17a and 17b, which is predetermined by the irradiation directions 15a and 15b.
  • the motif deposited in the imaging structure is not recognizable or only very poorly visible in the information structure 7.
  • different information is stored in both directions, so that when the wearer turns from one angle range to the next, the viewer receives the impression of tilting the image from one piece of information to another ("flip picture").
  • optically active boundary layers according to the embodiments of the invention are no longer arranged parallel to the lateral extent 5 of the data carrier 1, but in a direction substantially deviating from the lateral extent, ie especially perpendicular to the lateral extent 5 and obliquely thereto.
  • FIG 2 shows, again in schematic form, a data carrier 20 of a first preferred embodiment of the invention, in which the security feature 21 is mounted on a carrier 23 of the data carrier along a lateral extension 25 thereof.
  • the security feature has an information structure 27 and an optically effective imaging structure 29, both in the form of lateral layers, but in the embodiments of the invention, the optically active boundary layers 31 are not arranged parallel to the lateral extent 25 and are along the embodiment of FIG a direction 33 perpendicular to the lateral extent 25.
  • the optically active boundary layers 31 are formed by light guide elements, which are also arranged along the vertical direction 33.
  • FIGS. 3a, 3b and 3c the principle of operation of the light guide elements used in the embodiments of the invention is explained.
  • a light guide element 37 within the imaging structure 29 is shown schematically in FIGS. 3a, 3b and 3c.
  • the direction perpendicular to a lateral extent 25 direction 33 is indicated in dashed line.
  • the orientation of the optical waveguide element 37 for lateral expansion thus takes place here in a finite angle ⁇ , which is 90 °.
  • Another angle ⁇ (FIG. 6) between the alignment direction 33 of the light guide element 37 and the lateral extension 25 could also be selected.
  • an angle of 90 ° is chosen for the sake of simplicity.
  • this finite angle can be defined over two solid angles ⁇ and ⁇ , which further determine the direction 33 relative to the lateral extent 25. Both solid angles ⁇ and ⁇ can be varied as desired according to further embodiments of the invention and thus lead to a wide range of possible applications of the proposed concept.
  • incident light 39 a is not reflected or deflected parallel to the direction 33 of the fiber-optic element 37 embodied here as a fiber. In that case, information stored on the image structure 29 of the information structure 27 could best be read out. If the angle ⁇ of the incident light 39b, as shown in FIG. 3b, deviates from the direction 33 of the light guide element 37, total reflection 36 is initially present at the boundary layer 31 of the light guide element 37. In FIG. 3c, it is shown that with larger deviations ⁇ from the direction 33, the incident light 39c escapes from the optical waveguide element by refraction 38 at the boundary layer 31 of the optical waveguide element 37. Thus, in the case of FIG.
  • the optically variable effect could be in a different change in the appearance of the deposited information of the information structure 27 except in a contrast or brightness change.
  • the predetermined condition could be realized not only in the form of irradiation and / or viewing of the data carrier 20 or the illumination of the data carrier 20, but also in another form.
  • Another form would be, for example, the use of different wavelengths when irradiated with a laser. In that case, the properties of a total reflection 36 and the properties of a refraction 38 would change for a light guide element 33 used. Therefore, the optically variable effect would also change depending on the predetermined condition. It could z. B. different information at different wavelengths used become visible. Again, there is a wide range of possible variations in terms of the realization of the security feature 21 in the embodiments of the present invention.
  • light guide elements 37 could be realized, for example, as optical fibers. Both optically visible wavelengths and optically invisible wavelengths in the infrared or ultraviolet range can be used.
  • an optical fiber consists of a cladding and a core.
  • the core has a refractive index n 1 which is greater than the refractive index n 2 of the surrounding cladding. This is a condition for total reflection in the optical waveguide. That is, the cladding with the refractive index n 2 is made of an optically thinner medium than the core with the refractive index n 1 .
  • n 0 1, ie z.
  • the formula is intended to illustrate the principle of total reflection.
  • the boundary medium consists either of document material or, alternatively, by suitable filler material, through which the total reflection properties of a light guide element 37 and the refractive properties of a light guide element 37 at the boundary layer 31 can be changed such that, for example, the angle ⁇ , in which just total reflection 36 is possible at the boundary layer 31, expediently becomes particularly large.
  • various types of optical fibers can be used. For example, only optical fibers in their design as steps or gradient fibers are mentioned here. Usually multimode fibers would find application. However, there is nothing wrong with using singlemode fibers as well. A fiber usually has a circular cross-section. Any other form of optical fiber would be just as conceivable.
  • an optical fiber for use in the embodiments of the present invention would be made of materials such as polycarbonate, PMMA (plexiglass), or glass.
  • FIG. 4 shows a further preferred embodiment of a data carrier 40 is shown schematically, which has a security feature 41.
  • the security feature 41 has an imaging structure 43 formed as a layer and an information structure 45 formed as a layer and a carrier 47.
  • the information structure layer in this case is simply formed by the boundary layer between the image pattern layer 43 and the carrier 47.
  • This example is intended to clarify that not necessarily a specific information in the information structure 45 must be deposited.
  • the security performance could be provided solely by the mapping structure 43, such as by attaching certain characteristics in the mapping structure 43, such as by arrangement, alignment or further design of the imaging structure can be accomplished. This will be explained in detail in particular with reference to FIGS. 8a and 8b. Other possible variations with regard to the imaging structure have already been explained with reference to FIGS.
  • the imaging structure layer is disposed along a lateral extent 49 on the data carrier 40.
  • the light guide elements 46 are aligned with their boundary layers 48 perpendicular to the lateral extent 49. Furthermore, they are substantially closely adjacent to each other and arranged parallel to one another. In principle, the close parallel arrangement of all optical waveguide elements 46 makes it possible to clearly recognize the information of the information structure 45. In principle, however, an isolated and non-parallel arrangement of light guide elements could be provided. Equally, individual groups of closely spaced and mutually parallel optical waveguide elements could be provided, so that only isolated points or sections of the information structure 45 are visible or readable under a predetermined condition. With the arrangement of the optical waveguide elements 46 according to the embodiment of FIG. 4, a situation is specified which substantially corresponds to the situation described in FIG.
  • FIG. 5 shows an optically effective imaging structure 50 formed as a layer with optical waveguide elements 51 a, 51 b and 51 c.
  • the light guide elements 51 a and 51 b touch as little as the light guide elements 51 b and 51 c.
  • there is a filling material which improves the total reflection and refraction properties of the optical waveguide elements 51 a, 51 b and 51 c in accordance with the principle explained with reference to FIGS. 3 a to 3 c such that the angle ⁇ at which just total reflection 36 is possible at a boundary layer 31, is optimized, in this case, as large as possible.
  • FIG. 6 shows a further preferred embodiment of an optically active imaging structure 60 formed as a layer, in which the optical waveguide elements 61 with their boundary layers 63 are arranged obliquely, ie at a non-perpendicular angle to the lateral extent 65 of the imaging structure layer.
  • the oblique orientation can be defined by corresponding solid angles ⁇ , ⁇ , which in the embodiment of FIG. 6 are no longer 90 °.
  • FIG. 7 shows the dimensions of an imaging structure layer 70 and an optical fiber arranged therein as an optical waveguide element 71.
  • the optical fiber has a length " l" and a diameter " d".
  • the ratio of the length I of the fiber to the diameter d of the fiber should be at least five. However, this does not exclude that even smaller ratios may be appropriate if required by the application.
  • a diameter d of the fiber between 5 ⁇ m and 500 ⁇ m proves to be advantageous.
  • a length could be between 50 ⁇ m and 1000 ⁇ m.
  • the imaging structure 70 has a layer thickness of 100 ⁇ m, so that the length 1 of the fiber is also in this range.
  • An imaging structure layer could additionally have a protective layer 73.
  • the protective layer 73 could in principle also be omitted, since an optical fiber, unlike previously known lateral optically active structures, is very robust against signs of wear and z. B. hardly scratched in normal use.
  • FIGS. 8a and 8b show various possible arrangements of light guide elements 81a and 81b in the form of optical fibers, each in an imaging structure layer 80a and 80b in a lateral extension 83.
  • the arrangement 85a of Figure 8a corresponds to an orthogonal two-dimensional geometric arrangement.
  • the arrangement 85b of Figure 8b corresponds to a two-dimensional hexagonal geometric arrangement. Any other regular geometric, not patterned, arrangement is equally conceivable.
  • the imaging structure 80a, 80b would impart the regular characteristic caused by the arrangement of the optical waveguide elements 81a, 81b. This has, of course, with appropriate design of the security feature effects on a read information, which is indeed read through the light guide elements 81a, 81b. Specifically, this means that z. B.
  • the geometric arrangement of light guide elements 81 a as a regular Characteristic of the fiber optic layer 80a, 80b is shown.
  • a further characteristic safety performance of the security feature according to the embodiments of FIGS. 8a and 8b is provided.
  • Such a security may possibly only with aids, such. B. recognizable with a magnifying glass and thus not be recognized by untrained persons. That is, in the orthogonal arrangement 85a of Figure 8a and in the hexagonal arrangement 85b of Figure 8b of the light guide elements 81a and 81b is an equally hidden and inconspicuous security performance of the respective security feature.
  • FIGS. 8a and 8b it is also appropriate to transmit the information of the information structure by laser engraving.
  • the regular characteristic 85a, 85b would be superimposed on the information of the information structure, for example a motif.
  • the information structure is in this case material technology designed so that it is able to z. B. by taking brightness and / or contrast features, the regular characteristic 85a, 85b due to the laser action in addition to already existing information to record.
  • This has the advantage that the information of the information structure and the mapping structure with its regular characteristic are inseparably connected with each other in terms of safety and, in any case, can not be produced separately and thus not falsified.
  • the embodiments of the security feature of FIGS. 8a and 8b thus provide a particularly tamper-proof security feature.
  • FIG. 9 shows a further embodiment of a data carrier 90 with a security feature 91 and a carrier 93, which is essentially the document on which the security feature 91 is located.
  • the security feature 91 has a layered imaging structure 95 and an information structure 97 formed as a layer. All layers are equally disposed along a lateral extent 99.
  • the light guide elements 96 are arranged with their boundary layers 98 perpendicular to the lateral extent 99.
  • the information 94 is embodied as a printed motif. Such a motif may be, for example, a photograph or other personalized information. Motifs are particularly suitable for documents such as check cards, driver's licenses or identity cards.
  • FIG. 10 schematically shows a further embodiment of a data carrier 100 with a security feature 101 and a carrier 103.
  • the security feature 101 has an imaging structure 105 formed as a layer and an information structure 107 formed as a layer. All layers are in turn aligned parallel to the lateral extent 109 of the data carrier 100.
  • the imaging structure 105 has a plurality of light guide elements 111 with their boundary layers 113.
  • a lateral incidence of light on the information 115 of the information structure 107 is impeded or prevented by additional measures. In this way visually perceived contrast or brightness changes are supported.
  • a motif or a name or other personalized information 115 is shielded by an aperture 117 surrounding the information laterally.
  • Such measures are particularly suitable when the information 115 in the information structure layer 107 is introduced by laser engraving over the optically effective imaging structure layer 105.
  • the aperture 117 itself which acts as a privacy screen, can likewise be introduced by laser engraving into an information structure layer 107 designed as a laser-active layer.
  • the information can be introduced into the information structure both before and after a composition of the security feature, from information structure and mapping structure.
  • the information 94 is already present in the information structure 97 when the information structure layer 97 and the image structure layer 95 are assembled to the security feature 91.
  • a "blank" information structure layer 107 is brought together with an imaging structure layer 105.
  • the information 115 is introduced only when the security feature is already established or even located on a document or on a carrier 103 of a data carrier 100.
  • the light guide elements used in the imaging structure layer are removed from an optical fiber bundle; they could, for example, be sawed off or cut off as a layer. It is irrelevant whether the optical fiber elements, for example, as in Figure 4 are directly adjacent or, for example are spaced from each other in filling material inserted in Figure 5. Equally advantageously, bundles can be produced with or without filling material. Likewise, it is also possible to produce bundles in which a characteristic according to the embodiments of FIGS. 8a or 8b is already present. In each of the cases explained, a layer of corresponding thickness, as explained, for example, with reference to FIG.
  • a vertical intersection angle corresponds to a right-hand finite angle of the extension of an optical waveguide element for the lateral extent of the imaging structure layer, that is to say for example an embodiment of FIGS. 2, 4, 9 or 10.
  • the intersection angle for example, as shown with reference to Figure 6, would be practically the finite angle ⁇ , the light guide element with the lateral extent an imaging structure layer forms.
  • the present invention relates to a security feature 21, 41, 91, 101, which has over a so-called tilting image increased security.
  • the security feature 21, 41, 91, 101 has an information structure 27, 45, 97, 107 arranged along a lateral extent 25, 49, 65, 83, 99, 109 of the feature 21, 41, 91, 101 and an optically effective imaging structure 29, 43, 50, 60, 70, 80a, 80b, 95, 105, by means of which information 94, 115 of the information structure 27, 45, 97, 107 are readable in dependence on a predetermined condition.
  • the imaging structure 29, 43, 50, 60, 70, 80a, 80b, 95, 105 is provided by a number of optical waveguide elements 37, 46, 51a, 51b, 51c, 61 , 71, 81a, 81b, 96, 111, wherein a light guide element 37, 46, 51a, 51b, 51c, 61, 71, 81a, 81b, 96, 111 between one of the information structure 27, 45, 97, 107 facing and one end facing away from the information structure 27, 45, 97, 107 and forms a finite angle ⁇ to the lateral extent 25, 49, 65, 83, 99, 109 along its extent in order to specify the predetermined condition.
  • a document 20, 40, 90, 100 is provided with such a security feature 21, 41, 91, 101.
  • the number of light guide elements 37, 46, 51 a, 51 b, 51 c, 61, 96, 111 is separated from an optical fiber bundle at a finite separation angle to the axis of the optical fiber bundle, and is above the Abtrennwinkel to specify the predetermined condition the finite angle ⁇ to the lateral extent 25, 49, 65, 83, 99, 109 defined.
  • the security feature 21, 41, 91, 101 can either be manufactured as a whole and then attached to a document 20, 40, 90, 100 or made on the document 20, 40, 90, 100.
  • an optically variable effect is achieved as a function of the predetermined condition, so that in the direction of the finite angle ⁇ the information 94, 115 are read out in a predetermined quality and with increasing deviation from the finite angle ⁇ the information 94, 115 are read out with changed quality.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Pens And Brushes (AREA)

Claims (19)

  1. Caractéristique de sécurité (21, 41, 91, 101), présentant une structure d'informations (27, 45, 97, 107) disposée le long d'une extension latérale (25, 49, 65, 83, 99, 109) de la caractéristique (21, 41, 91, 101) et une structure d'image optiquement active (29, 43, 50, 60, 70, 80a, 80b, 95, 105) à l'aide de laquelle des informations (94, 115) de la structure d'informations (27, 45, 97, 107) peuvent être lues depuis une direction définie en fonction de l'éclairage et/ou de l'observation de la caractéristique de sécurité,
    caractérisée en ce que
    la structure d'image (29, 43, 50, 60, 70, 80a, 80b, 95, 105) est formée au moyen d'une pluralité d'éléments guides de lumière (37, 46, 51 a, 51 b, 51 c, 61, 71, 81 a, 81 b, 96, 111),
    un élément guide de lumière (37, 46, 51 a, 51 b, 51 c, 61, 71, 81a, 81 b, 96, 111) s'étendant entre une extrémité dirigée vers la structure d'informations (27, 45, 97, 107) et une extrémité opposée à la structure d'informations (27, 45, 97, 107), et
    formant le long de son extension un angle fini (ε) par rapport à l'extension latérale (25, 49, 65, 83, 99, 109).
  2. Caractéristiques de sécurité selon la revendication 1,
    caractérisée en ce que
    l'élément guide de lumière (37, 46, 51 a, 51 b, 51 c, 61, 71, 81 a, 81 b, 96, 111) forme le long de son extension un angle fixe (ε) par rapport à l'extension latérale (25, 49, 65, 83, 99, 109).
  3. Caractéristique de sécurité selon la revendication 1 ou 2,
    caractérisée en ce que
    la pluralité d'éléments guides de lumière (37, 46, 51 a, 51b, 51c, 61, 71, 81 a, 81 b, 96, 111) est dirigée parallèlement les uns aux autres en formant un angle fixe (ε) par rapport à l'extension latérale (25, 49, 65, 83, 99, 109).
  4. Caractéristique de sécurité selon l'une des revendications 1 à 3,
    caractérisée en ce que
    l'angle (ε) est compris entre 30° et 90°.
  5. Caractéristique de sécurité selon l'une des revendications 1 à 4,
    caractérisée en ce que
    la pluralité d'éléments guides de lumière (37, 46, 51 a, 51 b, 51 c, 61, 71, 81 a, 81 b, 96, 111) est formée par un faisceau de guides de lumière.
  6. Caractéristiques de sécurité selon l'une des revendications 1 à 5,
    caractérisée en ce que
    la pluralité d'éléments guides de lumière (37, 46, 51 a, 51b, 51 c, 61, 71, 81 a, 81 b, 96, 111) est encastrée dans le matériau de remplissage, ledit matériau de remplissage étant formé par un matériau de document et/ou par un matériau augmentant les capacités de réflexion d'une couche limite (48, 63, 113) d'un élément guide de lumière (37, 46, 51 a, 51b, 51c, 61, 71, 81 a, 81 b, 96, 111).
  7. Caractéristique de sécurité selon l'une des revendications 1 à 6,
    caractérisée en ce que
    l'élément guide de lumière (37, 46, 51a, 51b, 51c, 61, 71, 81a, 81b, 96, 111) a une longueur (I) comprise entre 50 µm et 1 000 µm.
  8. Caractéristique de sécurité selon l'une des revendications 1 à 7,
    caractérisée en ce que
    l'élément guide de lumière (37, 46, 51a, 51b, 51c, 61, 71, 81a, 81b, 96, 111) a un diamètre (d) compris entre 5 µm et 50 µm.
  9. Caractéristique de sécurité selon l'une des revendications 1 à 8,
    caractérisée en ce que
    la pluralité d'éléments guides de lumière (37, 46, 51a, 51 b, 51 c, 61, 71, 81 a, 81 b, 96, 111) est disposée les uns par rapport aux autres dans l'extension latérale (25, 49, 65, 83, 99, 109) de la caractéristique (21, 41, 91, 101) selon une disposition bidimensionnelle (85a, 85b) géométrique régulière, notamment une disposition orthogonale ou hexagonale.
  10. Caractéristique de sécurité selon la revendication 9,
    caractérisée en ce que
    le caractère (85a, 85b) de la structure d'image (29, 43, 50, 60, 70, 80a, 80b, 95, 105) se superpose aux informations lues (94, 115) de la structure d'informations (27, 45, 97, 107).
  11. Caractéristique de sécurité selon la revendication 9,
    caractérisée en ce que
    le caractère (85a, 85b) de la structure d'image (29, 43, 50, 60, 70, 80a, 80b, 95, 105) se superpose lui-même aux informations (94, 115) de la structure d'informations (27, 45, 97, 107).
  12. Caractéristique de sécurité selon l'une des revendications 1 à 11,
    caractérisée en ce que
    la structure d'informations (27, 45, 97, 107) est introduite à l'intérieure d'une première couche et/ou la structure d'image optiquement active (29, 43, 50, 60, 70, 80a, 80b, 95, 105) est introduite à l'intérieur d'une seconde couche le long de l'extension latérale (25, 49, 65, 83, 99, 109).
  13. Caractéristique de sécurité selon la revendication 12,
    caractérisée en ce que
    des éléments d'image optiques supplémentaires avec des effets de lentilles et/ou de cache sont prévus, notamment en ce que dans la première couche (103) il est disposé un cache (117) entourant l'information (115) comme élément d'image optique supplémentaire.
  14. Document (20, 40, 90, 100) avec une caractéristique de sécurité (21, 41, 91, 101) selon l'une des revendications 1 à 13.
  15. Document selon la revendication 14,
    caractérisé en ce que
    la caractéristique de sécurité (21, 41, 91, 101) est disposée au moins à l'intérieur du document.
  16. Document selon la revendication 14 ou 15,
    caractérisé par
    une zone transparente optiquement au moins dans la zone d'une extension latérale (25, 49, 65, 83, 99, 109) de la caractéristique de sécurité (21,41, 91, 101).
  17. Procédé pour la fabrication d'une caractéristique de sécurité (21, 41, 91, 101) selon l'une des revendications 1 à 13, dans lequel
    un support (23, 47, 93, 103) est préparé, et
    une structure d'informations (27, 45, 97, 107) est disposée le long d'une extension latérale (25, 49, 65, 83, 99, 109) sur le support (23, 47, 93, 103), laquelle structure est apte à recevoir des informations (94, 115), et
    une structure d'image optiquement active (29, 43, 50, 60, 70, 80a, 80b, 95, 105) est disposée sur la structure d'informations (27, 45, 97, 107) au moyen de laquelle structure d'image des informations (94, 115) de la structure d'informations (27, 45, 97, 107) peuvent être lues en fonction d'une condition fixée préalablement,
    caractérisé en ce que
    la structure d'image (29, 43, 50, 60, 70, 80a, 80b, 95, 105) est conçue sous la forme d'une pluralité d'éléments guides de lumière (37, 46, 51a, 51b, 51c, 61, 71, 81 a, 81 b, 96, 111), la pluralité d'éléments guides de lumière (37, 46, 51 a, 51 b, 51 c, 61, 71, 81 a, 81 b, 96, 111) étant, pour fixer la condition fixée préalablement, séparée d'un faisceau de guides de lumière en formant un angle de séparation fini par rapport à l'axe du faisceau de guides de lumière, et
    la structure d'image (29, 43, 50, 60, 70, 80a, 80b, 95, 105) est placée sur la structure d'informations (27, 45, 97, 107), un élément guide de lumière (37, 46, 51 a, 51b, 51c, 61, 71, 81a, 81b, 96, 111) s'étendant entre une extrémité dirigée vers la structure d'informations (27, 45, 97, 107) et une extrémité opposée à la structure d'informations (27, 45, 97, 107), et
    forme le long de son extension un angle fini (ε), défini par l'angle de séparation, par rapport à l'extension latérale (25, 49, 65, 83, 99, 109).
  18. Procédé pour la fabrication d'une caractéristique de sécurité selon la revendication 17,
    caractérisé en ce que
    la pluralité d'éléments guides de lumière (37, 46, 51a, 51 b, 51 c, 61, 71, 81 a, 81 b, 96, 111) est disposée les uns par rapport aux autres dans l'extension latérale (25, 49, 65, 83, 99, 109) de la caractéristique (21, 41, 91, 101) selon un caractère régulier (85a, 85b), et
    les informations (94, 115) sont placées dans la structure d'informations (27, 45, 97, 107) à travers la structure d'image optiquement active (29, 43, 60, 70, 80a, 80b, 95, 105) de telle sorte qu'ensuite
    le caractère (85a, 85b) de la structure d'image (29, 43, 50, 60, 70, 80a, 80b, 95, 105) se superpose aux informations (94, 115) de la structure d'informations (27, 45, 97, 107).
  19. Procédé pour placer une caractéristique de sécurité (21, 41, 91, 101) sur un document (20, 40, 90, 100) dans lequel
    soit
    la caractéristique de sécurité (21, 41, 91, 101) est fabriquée selon le procédé de fabrication conforme à la revendication 17 ou 18 et est placée en tant que telle sur le document (20, 40, 90, 100), soit
    un support (23, 47, 93, 103) est préparé sur un document (20, 40, 90, 100) et la caractéristique de sécurité (21, 41, 91, 101) est fabriquée sur le document (20, 40, 90, 100) selon le procédé de fabrication conforme à la revendication 17 ou 18.
EP04728323A 2003-04-25 2004-04-20 Caracteristique de securite et document correspondant, procede pour produire cette caracteristique de securite Expired - Lifetime EP1618007B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10318715A DE10318715A1 (de) 2003-04-25 2003-04-25 Sicherheitsmerkmal und Dokument mit Sicherheitsmerkmal sowie Verfahren zur Herstellung und Anbringung des Sicherheitsmerkmals an einem Dokument und Verfahren zur Echtheitsprüfung des Doukuments
PCT/DE2004/000820 WO2004097751A2 (fr) 2003-04-25 2004-04-20 Caracteristique de securite et document correspondant, procede pour produire cette caracteristique de securite et procede de controle d'authenticite

Publications (2)

Publication Number Publication Date
EP1618007A2 EP1618007A2 (fr) 2006-01-25
EP1618007B1 true EP1618007B1 (fr) 2007-02-21

Family

ID=33304937

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Application Number Title Priority Date Filing Date
EP04728323A Expired - Lifetime EP1618007B1 (fr) 2003-04-25 2004-04-20 Caracteristique de securite et document correspondant, procede pour produire cette caracteristique de securite

Country Status (4)

Country Link
EP (1) EP1618007B1 (fr)
AT (1) ATE354479T1 (fr)
DE (2) DE10318715A1 (fr)
WO (1) WO2004097751A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005052326A1 (de) * 2005-11-02 2007-05-03 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102007024298B3 (de) * 2007-05-23 2008-10-16 Zahedi Fariborz Martin Loessl Folienelement zur Echtheitserkennung, Sicherheitspapier, Sicherheitsdokument, Wertdokument, Münze, Jeton, Gebrauchsgegenstand, Gestaltungselement sowie Verfahren zur Herstellung eines Folienelements zur Echtheitserkennung und Verfahren zur Herstellung eines Sicherheitspapiers, eines Sicherheitsdokuments und eines Wertdokuments wie einer Banknote
CN102781629B (zh) * 2009-12-18 2015-11-25 奥雷尔·菲斯利防伪印刷股份公司 具有光波导的安全文件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632430A (en) * 1984-05-08 1986-12-30 Wicker Ralph C Secure and self-verifiable image
ES2038119T3 (es) * 1985-10-15 1993-07-16 Gao Gesellschaft Fur Automation Und Organisation Mbh Soporte de datos con caracteristica optica de autenticidad, asi como procedimiento para la fabricacion y comprobacion de dicho soporte de datos.
DE9317705U1 (de) * 1993-11-22 1994-03-31 Niebuhr Optoelektronik GmbH, 21079 Hamburg Identifikationskarte
CH691750A5 (de) * 1995-11-28 2001-09-28 Ovd Kinegram Ag Optischer Informationsträger.
US5959289A (en) * 1996-02-13 1999-09-28 Empire Airport Service Co., Ltd. Card and information recording card and method of using the same
US7104449B2 (en) * 1998-11-12 2006-09-12 Wenyu Han Method and apparatus for patterning cards, instruments and documents

Also Published As

Publication number Publication date
WO2004097751A3 (fr) 2005-02-03
DE10318715A1 (de) 2004-11-18
EP1618007A2 (fr) 2006-01-25
ATE354479T1 (de) 2007-03-15
DE502004002962D1 (de) 2007-04-05
WO2004097751A2 (fr) 2004-11-11

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