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WO2007011259A1 - Procede de marquage optique d'articles - Google Patents

Procede de marquage optique d'articles Download PDF

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Publication number
WO2007011259A1
WO2007011259A1 PCT/RU2006/000292 RU2006000292W WO2007011259A1 WO 2007011259 A1 WO2007011259 A1 WO 2007011259A1 RU 2006000292 W RU2006000292 W RU 2006000292W WO 2007011259 A1 WO2007011259 A1 WO 2007011259A1
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WO
WIPO (PCT)
Prior art keywords
optical
brand
product
distribution
marking
Prior art date
Application number
PCT/RU2006/000292
Other languages
English (en)
Russian (ru)
Inventor
Yuri Leonidovich Korzinin
Vitaly Ivanovich Sukhanov
Original Assignee
Yuri Leonidovich Korzinin
Vitaly Ivanovich Sukhanov
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 Yuri Leonidovich Korzinin, Vitaly Ivanovich Sukhanov filed Critical Yuri Leonidovich Korzinin
Publication of WO2007011259A1 publication Critical patent/WO2007011259A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/083—Constructional details
    • G06K19/086—Constructional details with markings consisting of randomly placed or oriented elements, the randomness of the elements being useable for generating a unique identifying signature of the record carrier, e.g. randomly placed magnetic fibers or magnetic particles in the body of a credit card

Definitions

  • the invention relates to methods for optical marking of products with subsequent identification of the brand in order to protect against counterfeiting.
  • the invention can be used in various fields of economic activity, for example, to protect against copying bank documents (plastic cards) and identification cards, in computer technology to protect against unauthorized access to databases, to certify works of art in order to prevent the appearance of falsified copies , for protection against falsification of goods made from a wide variety of materials, for the protection of paper documents from fakes.
  • a known method of optical marking of the product including the selection of the optical brand, incorporation of the named brand in the product, its packaging or in a tag attached to it.
  • the stamp is made in the form of an embossed hologram (WO9808691; priority 30.08.1996, publication date 5.03.1998, MIZH B42D15 / 10) (WO2004029915; priority 29.09.2002; publication date 08.04.2004, IPC G09F ⁇ / 02).
  • the process of product identification in accordance with a known method is reduced to lighting the brand, its visual inspection and identification based on the similarity of the observed picture to the images on the marks of similar products of the same manufacturer or by instrumental decoding of the image restored by the hologram.
  • hidden micro-inscriptions or conventional signs on a holographic mark are additionally identified by instrumental methods.
  • a disadvantage of the method of marking products with embossed holograms is their insufficient degree of protection against counterfeiting, since embossed holograms can be reproduced and replicated using available and widespread technologies.
  • the personification of a specific product sample, including an optical mark in the form of an embossed hologram, is impossible without the use of additional marking tools.
  • spots additionally contain color or polarization coding due to the presence in their composition cholesteric liquid crystals with the property of selectively reflecting light of a specific wavelength or polarization.
  • a method for optical marking of a product including incorporation into the product, its packaging, or in an attached optical mark tag with a spatial distribution of optical parameters that are not repeated from product to product, as well as an auxiliary optical, magnetic or electronic information carrier with a database address, and storing information about the named optical brand in the named database.
  • the closest in technical essence to the claimed method of optical marking of the product is "Method of recognition of counterfeit" (RF Patent N ° 2 202 127 C2; country of priority CN, priority date 08.08.1998; publication date in Russia 10.04.2003; IPC: G07D7 / 02; G06K5 / 00; G09F ⁇ / 00).
  • the brand is chosen among objects made of materials with a clearly visible random pattern.
  • This pattern is formed by macrostructural elements of a material, such as wood, stone, as well as artificial materials such as paper, plastic, glass with a special addition of dyes, foreign inclusions, irregular grains.
  • the random structural pattern of the brand which was read by the scanning device from the product to the product, as well as the coordinates of the characteristic control points of the structural pattern are stored in the database of the product manufacturer
  • the identification procedure in accordance with the known method of recognizing counterfeit products is reduced to the following sequence of operations: 1) Send a request to the database for the image of the brand and / or the coordinates of the control points of the structural pattern of the brand stored in it; 2) Receive information about the structural pattern by phone, fax or Internet from a database; 3) A comparative analysis of the similarity of the control points of the displayed image of the structural pattern of the brand with the structural pattern of the brand itself is made, or the coordinates of the control points printed on the product are compared with the coordinates of the control points obtained from the base data. Based on the comparison of data, an expert opinion on the authenticity or forgery of the product is accepted.
  • an auxiliary information carrier with a digital code of the product which is simultaneously the address of the product information in the manufacturer’s database, is incorporated into the product, its packaging or a tag attached to the product.
  • the disadvantage of the known method of optical marking of the product is the need to use for its identification a large database that stores information about each product, which becomes a significant limitation for products of mass production.
  • the objective of the invention is to increase the degree of protection of the product from counterfeiting while significantly reducing the requirements for the volume of the database required for product identification.
  • the choice of the optical brand is made from among objects with a random spatial distribution of inhomogeneities indistinguishable to the naked eye, a light beam from the radiation source is directed to the selected brand, a spatially modulated distribution of the radiation intensity of the working spectral range is formed, due to the presence of the named visually indistinguishable inhomogeneities of the brand, the named intensity distribution is read radiation and save the read information in the database as the basis th product code.
  • the aforementioned optical brand is made of an isotropic optical material in the form of a transparent window, for example, in the form of a glass plate or a sheet of plastic, characterized by the presence of strands, irregular undulation of the surface or spatially inhomogeneous internal stresses.
  • the named optical brand is made of a transparent material containing randomly distributed birefringent particles, for example, encapsulated liquid crystals, particles of crushed mica, birefringent microcrystals or cellulose fibers.
  • optical brand is made of perforated birefringent material with a random distribution of holes in size and spatial arrangement, for example, of a transparent perforated polymer film.
  • optical brand is made of granular microcrystalline material, for example, optical ceramics or multi-domain crystals.
  • the named optical brand is made of an optical material containing dispersed suspended particles.
  • the named optical brand is made of a transparent optical material with a rough surface.
  • optical brand is made from any reflecting radiation of the working spectral range of a material with a rough surface, for example, metal, polymer, composite, ceramic, paper or cardboard.
  • the aforementioned optical brand is additionally provided with a reference point, for example, crosshairs, a coordinate grid or line bars of various orientations.
  • an auxiliary optical, magnetic or electronic information carrier is additionally incorporated into it, a secondary personalized product code is received in the named carrier, obtained as a result of the encoding of the main product code of one of the encoding functions stored in the database of the identification system, and when identifying the authenticity of the product, an additional comparison is made of the named secondary personified and transcoding the result with the basic product code read by the identification encoding function applied previously to generate the title secondary personalized code.
  • the choice of the optical brand is made from among objects with a random spatial distribution of inhomogeneities indistinguishable to the naked eye, a light beam from the radiation source is directed to the selected brand, a spatially modulated distribution of the radiation intensity of the working spectral range is formed, due to the presence of the named visually indistinguishable inhomogeneities of the brand, the named intensity distribution is read radiation and save the read information in the database as the basis th product code.
  • optical brand is made of an isotropic optical material in the form of a transparent window, for example, in the form of a glass plate or a sheet of plastic, characterized by the presence of strands, irregular undulations of the surface or spatially inhomogeneous internal stresses.
  • the named optical brand is made of a transparent material containing randomly distributed birefringent particles, for example, encapsulated liquid crystals, particles of crushed mica, birefringent microcrystals or cellulose fibers.
  • optical brand is made of perforated birefringent material with a random distribution of holes in size and spatial arrangement, for example, of a transparent perforated polymer film.
  • optical brand of perforated birefringent material with a random distribution of holes in size and spatial arrangement is additionally laminated with transparent non-perforated material.
  • optical brand is made of granular microcrystalline material, for example, optical ceramics or multi-domain crystals.
  • optical brand is made of an optical material containing dispersed suspended particles.
  • the named optical brand is made of a transparent optical material with a rough surface.
  • optical brand is made from any reflecting radiation of the working spectral range of a material with a rough surface, for example, metal, polymer, composite, ceramic, paper or cardboard.
  • an auxiliary optical, magnetic or electronic storage medium is additionally incorporated into it, the secondary personalized product code obtained as a result of transcoding the main product code of one of the encoding functions stored in the database of the identification system, and when identifying the authenticity of the product, they additionally compare the named secondary personified to and transcoding the result with the basic product code read in the identification, the encoding function used previously to generate the named secondary personified code.
  • Figure 1 represents an optical labeled product made according to the method according to the invention and comprising an optical mark in the form of a window of a transparent optically inhomogeneous material: (1) An optical mark product (2) An optical mark, (3) An additional storage medium, (4) Address code owner’s database, (5) Address of the coding function in the database, (b) Secondary personified product code, (7) Coordinates for positioning the product during identification.
  • Figure 2 depicts a product with optical marking made according to the method according to the invention and comprising an optical mark in the form of a selected fragment of the surface of an opaque material: (8) A product with optical marking (9) An optical mark made in the form of a highlighted portion of the surface of the product,
  • An additional storage medium carrying the address of the code owner’s database, the address of the encoding function in the database and the secondary personified product code
  • Figure 3 is a diagram of an interferometric device for forming in its output plane a spatially modulated distribution of the radiation intensity of the working spectral range corresponding to the spatial distribution of the optical inhomogeneities of the optical mark according to the invention:
  • Figure 4 is a diagram of a polarizing device for forming in its output plane a spatially modulated distribution of the radiation intensity of the working spectral range, corresponding to the spatial distribution of the optical inhomogeneities of the optical brand according to the invention:
  • Figure 5 represents an embodiment of a coherent-optical device for forming in its output plane a spatially modulated distribution of the radiation intensity of the working spectral range corresponding to the spatial distribution of the optical inhomogeneities of the optical brand according to the invention:
  • this information is contained in the amplitude-phase distribution of the wave field transmitted through these optical marks or reflected by them, and can easily be detected using known interferometric, coherent optical, polarizing and other optical devices, for example, shadow ones that form spatially in the observation plane modulated distribution of the radiation intensity of the working spectral range, corresponding to the spatial distribution of the optical indistinguishable by the eye optical brand according to the invention.
  • this procedure “visualization” of the spatial distribution of brand parameters even if the working wavelength corresponds to the spectral range outside the visible range of the spectrum.
  • This spatially modulated distribution of the radiation intensity can be read using widely used scanning devices, for example, photodetector arrays.
  • the resulting signal can be represented in numerical form and used as the main personified product code.
  • the named code is entered into the database of the manufacturer or supplier of the product (code owner).
  • identifying the product When identifying the product, it is positioned relative to the reader, which contains an interferometric, coherent-optical, polarizing or other device for visualizing spatial indistinguishable by the eye at least one of the optical parameters of the optical brand.
  • a visualized image in the form of a spatially modulated distribution of the radiation intensity is read by a scanning device, for example, an array photodetector, the received signal is presented numerically and via a communication network, for example, the Internet, sent to the code owner’s database, where the received signal is compared with that stored in the database main personalized product code. If they coincide from the database, they send a signal to the consumer about the successful authorization of the product via the same communication network.
  • Automatic connection to the database is carried out with using an auxiliary optical, magnetic or electronic information carrier with a code carrying information about the address of the database of the owner of the main code and the product code.
  • the optical marks according to the invention do not use clearly visible random structural patterns characterized by the presence of a number of characteristic and easily distinguishable fragments of a macroscopic scale, such as distinct spots, grainy inclusions of irregular shape, fibers, bubbles, etc.
  • the indicated structural macrozones can be quite easily reproduced using widely used technologies, and copies of the structural patterns can be used for falsified labeling of counterfeit products.
  • Another objective of the present invention - a significant reduction in the requirements for the volume of the database used in the recognition of fake products - is solved as follows:
  • the main personalized product code is recoded using one of the coding functions stored in the database of the owner of the main code. The result is a secondary personalized code for the named product.
  • the named secondary personified code of the product is entered into an auxiliary optical, magnetic or electronic storage medium incorporated into the product.
  • the main personified product code is read according to the procedure of step l, the address of the encoding function is read from the auxiliary storage medium and this code is transmitted via communication networks to the code owner’s database, where the received main personalized code is transcoded by the requested encoding function, t .e. generation of a second personalized product code.
  • This secondary personalized code is sent to the consumer via communication networks, where the received code is compared with the secondary personalized product code stored in the auxiliary storage medium incorporated therein. If the named secondary personalized codes do not match, the product is identified as a counterfeit product.
  • the code owner’s database in this case does not contain any personalized data about each product sample, and the same coding function, as well as its address in the database, can be used for marking a large series of similar products and subsequent verification their authenticity.
  • the secondary personalized code is generated by recoding the unique personalized code unique for each product sample, the carrier of which is an optical mark protected from falsification. In this case, the conversion is carried out by a function known only to the owner of the code. This provides a high degree of protection against counterfeiting of the product marked in accordance with the present invention with a significant reduction in the requirements for the volume of the database used in the recognition of counterfeit products.
  • the method of optical marking of products according to the invention allows to determine the authenticity of products, i.e. compliance with their trademark, without personification of the product itself, which is sufficient to certify most products of mass demand.
  • this marking method does not exclude the possibility personification of a particular product by comparing its main code read from the optical mark with the main code of the same product stored in the database, which is essential, for example, when conducting financial transactions using credit cards.
  • a preliminary authentication of the object without its personification can be useful as an additional barrier to protect the database storing personalized data from hackers.
  • an optical brand is selected from among objects made of a material whose refractive index or surface profile is spatially modulated according to a random law.
  • the optical mark can be made of an isotropic optical material in the form of a transparent window, for example, a glass plate or a sheet of plastic. Note that the swirls and irregular undulations are always present in sheet materials, and their appearance is due to the influence of many factors that are difficult to control. Only in high-grade optical glass the number of stitches is normalized and is reflected in the respective catalogs of manufacturers. As for the mass production of transparent materials, they inevitably contain a large number of optical inhomogeneities, most of which are indistinguishable by the eye.
  • Examples of products with optical marking can serve as identification plastic cards (Fig. 1) and labels of various goods with an incorporated window, isolated fragments of glass and commercial plastic containers and other products from these materials.
  • the selected optical brand is positioned in an optical device visualizing a random spatial distribution of the optical heterogeneities of the brand.
  • an interferometer Fig. 3
  • a shadow device can be used as such a device.
  • the visualized picture is read using a scanning device, for example, a line of photodetectors, and the main personified in this way the product code is entered into the code holder database.
  • the main personified code can be re-encoded by one of the encoding functions stored in the code owner’s database, and the obtained secondary personified product code can be entered into an auxiliary storage medium incorporated into the product (Fig. 1,2) along with the address the code owner’s database and the address of the encoding function used to generate the named secondary personified code
  • Examples of the implementation of an auxiliary storage medium incorporated in a marked object may include:
  • the interferometer shown in FIG. 3 As a device for visualizing a random spatial distribution of optical heterogeneities of a brand, for example, the interferometer shown in FIG. 3.
  • the optical mark (11) made of a material whose refractive index and surface profile or at least one of the mentioned parameters are spatially modulated according to a random law, are positioned in the interferometer using special coordinate landmarks, for example, crosshairs, deposited on the surface of the product, and direct radiation from the laser illuminator (10) onto it, for example, a Laser Diode Module 31-0441-000 semiconductor laser manufactured by Socherept, emitting 0.95 MW at a wavelength of 635 nm.
  • the radiation transmitted through the optical mark is directed to a prism beam splitter (12), which splits the incident beam into two and brings them together in the plane of the holographic grating (13), so that the wavefront of one of them turns out to be mirror-inverted relative to the other.
  • a prismatic beam splitter for example, gluing two identical diamond-shaped prisms made of K-8 glass with a beam-splitting vacuum coating is used, and as a lattice (13), a hologram recorded, for example, on PFG-OZm photographic plates manufactured by Public Corporation Slavich. Behind lattice (13), there is a rearrangement of the zero diffraction order of one of beams incident on it and first-order diffraction of another beam.
  • an interference pattern is formed, the spatial position of the bands of which is uniquely associated with the spatial distribution of optical inhomogeneities of the optical brand.
  • the illumination distribution (14) in the above interference pattern is read using a scanning device, for example, the TSL 3301 line of photodetectors manufactured by TAOS, represent it numerically using standard electronic devices, and use the received signal as the primary personalized product code that is entered in code owner database.
  • a scanning device for example, the TSL 3301 line of photodetectors manufactured by TAOS
  • the received signal as the primary personalized product code that is entered in code owner database.
  • interferometric methods make it possible to identify differences in the optical paths of interfering beams of the order of 0.1 wavelength. This corresponds to spatial variations in the refractive index of the optical mark of the order of 3XlO "4 at a thickness of 0.1 mm, or relative local variations in thickness 2x10 " 4 .
  • such small defects cannot be detected by visual inspection. It is known that such or large optical inhomogeneities are characteristic of the
  • the main personified code can be re-encoded by one of the encoding functions stored in the code owner’s database, and the received secondary personified product code is entered into the auxiliary storage medium incorporated into the product, together with the address of the code owner’s database and the address of the encoding function used to generate named secondary personified code.
  • these data can be entered by known methods in the magnetic strip on a bank plastic card.
  • the authentication of the marked product is carried out in accordance with the procedure described above in the description of the invention.
  • optical brand is selected from among objects made of a material, optical anisotropy, the optical activity of which or at least one of these parameters are spatially modulated according to a random law.
  • the optical mark can be made in the form of a transparent window from an anisotropic optical material, for example:
  • a transparent material for example, a polymer containing randomly distributed birefringent microparticles, for example, encapsulated liquid crystals, particulate mica particles, birefringent microcrystals or cellulose fibers; from a transparent material characterized by the presence of spatially heterogeneous internal stresses, for example, in the form of a glass plate or a plastic sheet, not subjected to thermal annealing.
  • a transparent material for example, a polymer containing randomly distributed birefringent microparticles, for example, encapsulated liquid crystals, particulate mica particles, birefringent microcrystals or cellulose fibers
  • perforated birefringent material with random distribution of holes in size and spatial arrangement.
  • commercial rolled transparent polymeric materials such as polyethylene, polyethylene terephthalate, prolyvinyl chloride, which, due to the technological features of manufacturing, always turn out to be oriented and exhibit significant birefringence, can be used for these purposes.
  • the holes in the material can be made, for example, by mechanical perforation, using laser ablation, or as a result of breakdown of the material by a spark electric discharge.
  • the mark can be additionally laminated with non-perforated sheet material in accordance with the known technology for manufacturing plastic cards, which makes the holes indistinguishable to the naked eye. from granular microcrystalline material, for example, optical ceramics or multidomain crystals; from a transparent optical material, for example, a polymer containing microparticles of optically active substances, for example, sugar.
  • Examples of products with optical marking including an optical brand from a material, optical anisotropy, the optical activity of which or at least one of these parameters are spatially modulated according to a random law, can be identified by plastic cards and labels of various goods with an incorporated window containing this brand .
  • the considered example of implementing the method of optical marking of a product differs from Example 1 by the choice of a device that implements visualization of a random spatial distribution of optical inhomogeneities of the brand.
  • a polarization device is used, the circuit of which is shown in Figure 4.
  • the optical mark (17) made of a material whose optical anisotropy is spatially modulated according to a random law, is positioned in the said device between two crossed polaroids (16), (18) using special reference points, for example, crosshairs, deposited on the surface of the product, and direct radiation from the illuminator (15) onto it.
  • polaroids for example, film polaroids or Nicolas prisms are used, and as a illuminator, a semiconductor LED, for example, LS503NWH1-15G white light emitter, manufactured by I-WITTY T ⁇ CHNNOLOGY Ltd.
  • the surface of the optical mark is depicted on the surface of a scanning device, for example, the TSL 3301 line of photodetectors manufactured by TAOS, and the distribution of radiation intensity (20) is recorded in the image plane of the optical mark, which is in accordance with the distribution of the anisotropy of the optical mark material .
  • the registered signal is represented in numerical form using standard electronic devices and is used as the primary personalized product code.
  • Example 3 the same data and the same procedure are recorded in the code owner’s database and in the auxiliary storage medium incorporated into the product using the same procedure as described in Example 1.
  • Example 3 the same data and the same procedure are recorded in the code owner’s database and in the auxiliary storage medium incorporated into the product using the same procedure as described in Example 1.
  • the optical brand is selected from among the objects made of material with scattering centers, the distribution of which over the volume or surface of the named object is spatially modulated according to a random law.
  • the optical mark can be made in the form of: a window made of a transparent optical material, for example, glass or polymer, containing dispersing microparticles, for example, fine powders of solid substances;
  • - windows of transparent optical material for example, glass or polymer, with a microrough surface
  • the selected fragment of the marked product made of an opaque material with a microrough surface, for example, metal, polymer, composite, ceramic, stone, paper or cardboard.
  • Examples of products with optical marking including an optical brand of material with scattering centers, the distribution of which over the volume or surface of the named object is spatially modulated according to a random law, are frosted glass and polymer products, engineering parts, paper documents, packaging of goods, electronic and radio engineering industry, building materials, works of art and other products, the selected fragments of which are available for hardware control.
  • the considered example of implementing the method of optical marking of the product differs from Examples 1.2 by the choice of a device that implements visualization of the random spatial distribution of the scattering centers of the brand.
  • a coherent optical device is used, the embodiment of which is shown in Figure 5.
  • the optical mark (9) made of light-scattering material is positioned in the said device using special reference points, for example, crosshairs, deposited on the surface of the product, and laser radiation (10) is sent to it, for example, a Laser Diode Module 31-0441-000 semiconductor laser manufactured by Socherept, emitting 0.95 MW per dl no wavelength 635 nm.
  • laser radiation (10) is sent to it, for example, a Laser Diode Module 31-0441-000 semiconductor laser manufactured by Socherept, emitting 0.95 MW per dl no wavelength 635 nm.
  • the radiation reflected by the optical mark forms a spotted, so-called speckle pattern as a result of the interference of waves emanating from different scattering centers of the optical mark.
  • the distribution of radiation intensity (21) in the named speckle pattern is determined by the spatial distribution of scattering microcenters.
  • the speckle pattern is purely individual for each brand.
  • the illumination distribution in the named speckle pattern is read using a scanning device, for example, the TSL 3301 line of photodetectors manufactured by TAOS, represent it in numerical form using standard electronic devices and use the received signal as the primary personalized product code.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Laser Beam Printer (AREA)

Abstract

La présente invention se rapporte à un procédé permettant de marquer des articles par voie optique puis d'identifier ladite marque aux fins de protection contre la contrefaçon. Le procédé selon l'invention consiste : à sélectionner une marque optique destinée à marquer un article, parmi un certain nombre d'objets présentant une répartition spatiale aléatoire d'hétérogénéités invisibles à l'oeil nu ; à diriger un faisceau de lumière issu d'une source de rayonnement sur ladite marque ; à former une répartition d'intensité de rayonnement modulée dans l'espace d'un domaine spectral de travail, qui est définie par la présence desdites hétérogénéités ; à extraire la répartition d'intensité de rayonnement sous la forme d'informations de répartition d'hétérogénéités ; et à enregistrer les informations ainsi extraites en tant que code principal de l'article, dans une base de données d'un système d'identification. Ladite marque optique peut être constituée d'une matière transparente dotée de stries, d'une surface ondulée irrégulière, de particules de diffusion et biréfringentes réparties aléatoirement et d'autres hétérogénéités invisibles, qu'il est impossible de reproduire à l'aide des moyens techniques actuels. Ladite marque optique peut se présenter sous la forme d'un fragment sélectionné de la surface de l'article lui-même. L'invention permet d'améliorer le niveau de protection contre la contrefaçon d'un article, tout en réduisant les besoins en volume de la base de données nécessaire à l'identification d'articles.
PCT/RU2006/000292 2005-07-22 2006-06-05 Procede de marquage optique d'articles WO2007011259A1 (fr)

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RU2413989C2 (ru) * 2009-04-23 2011-03-10 Общество с ограниченной ответственностью Научно-производственный центр ИНТЕЛКОМ Способ оптической маркировки музейных ценностей
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EA201001051A1 (ru) * 2010-06-07 2011-04-29 Открытое Акционерное Общество "Научно-Производственное Объединение "Криптен" Способ изготовления фотолюминесцентного поляризационного защитного средства, защитное средство, полученное указанным способом, ценный документ, содержащий указанное защитное средство, и способ верификации подлинности документа, содержащего защитное средство
RU2714789C1 (ru) * 2019-09-04 2020-02-19 Константин Александрович Хлопков Система идентификации объекта на основе оптического элемента

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