WO2015167363A1 - Procédé de formation d'une image combinée personnalisée et noir et blanc et en pleines couleurs personnalisée sur une structure à couches multiples - Google Patents

Procédé de formation d'une image combinée personnalisée et noir et blanc et en pleines couleurs personnalisée sur une structure à couches multiples Download PDF

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Publication number
WO2015167363A1
WO2015167363A1 PCT/RU2015/000182 RU2015000182W WO2015167363A1 WO 2015167363 A1 WO2015167363 A1 WO 2015167363A1 RU 2015000182 W RU2015000182 W RU 2015000182W WO 2015167363 A1 WO2015167363 A1 WO 2015167363A1
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WO
WIPO (PCT)
Prior art keywords
image
color
pixel
white
laser beam
Prior art date
Application number
PCT/RU2015/000182
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English (en)
Russian (ru)
Inventor
Андрей Борисович КУРЯТНИКОВ
Игорь Васильевич ПАВЛОВ
Георгий Валентинович КОРНИЛОВ
Елена Михайловна ФЕДОРОВА
Валентин Анатольевич КСЕНОФОНТОВ
Александр Федорович СМЫК
Эрнест Ярославович НИКИРУЙ
Сергей Николаевич ПЛАТОНОВ
Юрий Валентинович ПОНОМАРЕВ
Елена Самуиловна ТУРКИНА
Original Assignee
Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак")
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 Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак") filed Critical Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак")
Publication of WO2015167363A1 publication Critical patent/WO2015167363A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/361—Removing material for deburring or mechanical trimming

Definitions

  • the invention relates to the field of security technologies for identification documents, such as passports, identification cards, driver's licenses.
  • identification documents such as passports, identification cards, driver's licenses.
  • personalization information about the owner of the document is recorded in them. As a rule, this is a portrait of the owner and his biometric data, date and place of birth, time and place of issue of the document, etc.
  • holographic images are easily distinguishable and difficult to imitate.
  • Full-color images restored in white light are formed by a flat pixel matrix, each holographic pixel of which has a characteristic size of 20 ⁇ m - 100 ⁇ m and is divided into three subpixel regions, in each of which diffraction gratings are recorded that restore one of the three light waves of red green or blue light.
  • Subpixel area options for each pixel are selected in such a way that under the general illumination of the entire hologram with white light, the recorded full-color image is restored.
  • the disadvantage of the proposed solution is the complexity of the formation of a pixel matrix using electron beam lithography technology and the inability to form such holographic images when personalizing documents.
  • the closest technical solution to the proposed one is a method for producing full-color holographic images using the technology described in document RU 2079167 C1, 05/10/1997.
  • Full-color images restored in white light are formed by a flat matrix created in a multi-layer holographic structure.
  • the upper and middle layers are made in the form of opaque reflective diffraction gratings, the lower layer is in the form of a transparent or reflective grating.
  • the diffraction layers are designed so that when illuminated with white light in a predetermined direction, radiation from the blue, green, and red spectral ranges is reflected from each of these layers.
  • the image identifying the authenticity of the information carrier is color, has a raster structure, and is formed by deleting in certain areas of the information carrier of the material to a depth of either only the top or the top and middle opaque layers of the information carrier using laser engraving.
  • the information posted on the media has the form of text and graphic images.
  • the disadvantage of the proposed solution is the complexity of the formation of the pixel matrix. In addition, you can see such an image only in special lighting.
  • the problem solved by the invention is the creation of pixel arrays, providing the formation of combined black and white and color images in personalization modes using masking technology in a single diffraction layer.
  • the configuration and placement of subpixel regions is selected in the form of diamonds aligned along the boundaries.
  • the subpixel areas inside different pixels are positioned differently, thus creating a hidden marking of the personalization image.
  • a light-contrast black-and-white mask is formed on the pixel matrix.
  • the pixels are formed so that all subpixel areas converge in the center of the pixel, and laser engraving is performed by changing the size of the raster spot and shifting the raster spot relative to the center of the pixel.
  • the basing of the laser beam is carried out by comparing the intensity of the diffraction orders, and / or measuring the intensity of one of the orders with a normal incidence of the laser beam, or when the laser beam is incident at an angle to the normal.
  • laser engraving is carried out through matted thin-film structures placed on the surface of a pixel matrix or diffraction gratings made scattering.
  • Figure 1 shows a fragment of a storage medium with a pixel matrix, where:
  • holographic images were produced on a standard holographic foil 1 with an aluminum reflective layer.
  • the images were gratings, at the nodes of which were placed pixels 2 with a subpixel structure consisting of three regions with three different diffraction gratings, reflecting red, green, and blue colors, respectively, in a given direction.
  • the pixels were round in shape with a characteristic size of 120 ⁇ m.
  • Each pixel was divided into three areas - subpixels 3, 4, 5, filled with diffraction gratings, which, when white light (7) falls on them, reflect in a given direction 6 (for example, perpendicular to the surface of the information carrier) radiation of the red, green, and blue spectral ranges, respectively .
  • the areas occupied by diffraction gratings were the same in each of the subpixels.
  • part of each subpixel was burned out diffraction grating.
  • a reflective aluminum film was burned out beneath the diffraction gratings of the subpixels.
  • the shape of pixels and sub-pixel areas can be different, for example, a square, a rectangle, a rhombus, a hexagon, a spot of irregular shape, etc.
  • the shape of subpixel regions is selected, for example, in the form of the boundaries of rhombuses, the pixels in this case are in the form of regular hexagons.
  • the different arrangement of subpixel areas in different pixels allows you to create a hidden marking of a personalization image.
  • a light-contrast black-and-white mask is formed on the pixel matrix before or during laser engraving. This allows you to observe from different angles alternately in color or in black and white.
  • the invention is applicable in the field of security technologies for identification documents, such as passports, identification cards, driver’s licenses and allows you to protect them from forgery by recording personalization information about the document’s owner, for example, the portrait of the owner, his biometric data, date and place of birth, time and place of issue of the document, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Credit Cards Or The Like (AREA)
  • Holo Graphy (AREA)

Abstract

L'invention concerne le domaine des techniques de protection de documents, par exemple, de passeports, de cartes d'identification et de permis de conduire. Pour protéger ces documents contre la contrefaçon lors de leur fabrication on y enregistre des informations personnalisées sur le détenteur de ces documents. Il s'agit généralement du portrait du détenteur et de ses données biométriques, de la date et du lieu de naissance, de la date et du lieu d'établissement du document. On propose un procédé de formation d'image combinée personnalisée et noir et blanc et en pleines couleurs qui permettent d'identifier l'authenticité du support d'informations enregistré sous la forme d'une matrice de pixels possédant une structure de trame. L'image est formée par le masquage ou l'enlèvement du matériau dans certaines zones du support d'informations par des procédés différents de gravure laser. Selon l'invention, les pixels sont répartis en région sous-pixels qui sont responsables de la couleur dans l'image observée. L'image est formée par la variation partielle de la densité de couleurs et de luminosité des régions sous-pixels grâce à la modulation de l'intensité, de la durée et du nombre d'impulsions laser en utiliser un positionnement précis du rayon laser en suivant les éléments de la matrice de pixels et des marques optiques spéciales. Le résultat technique consiste en une création de matrices de pixels assurant la formation d'images combinées de couleur ou noir et blanc en modes de personnalisation suivant la technologie de gravure par laser dans une seule couche de diffraction.
PCT/RU2015/000182 2014-04-29 2015-03-26 Procédé de formation d'une image combinée personnalisée et noir et blanc et en pleines couleurs personnalisée sur une structure à couches multiples WO2015167363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2014117252 2014-04-29
RU2014117252/28A RU2556328C1 (ru) 2014-04-29 2014-04-29 Способ получения комбинированного черно-белого и полноцветного персонализационного изображения на многослойной структуре

Publications (1)

Publication Number Publication Date
WO2015167363A1 true WO2015167363A1 (fr) 2015-11-05

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ID=53538763

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2015/000182 WO2015167363A1 (fr) 2014-04-29 2015-03-26 Procédé de formation d'une image combinée personnalisée et noir et blanc et en pleines couleurs personnalisée sur une structure à couches multiples

Country Status (2)

Country Link
RU (1) RU2556328C1 (fr)
WO (1) WO2015167363A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111531282A (zh) * 2020-05-29 2020-08-14 青岛星成激光科技有限公司 利用飞秒激光在镜面金属材料表面进行炫彩标记的方法
US20220184990A1 (en) * 2019-02-28 2022-06-16 Idemia France Colour image formed from a hologram

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240262A2 (fr) * 1986-03-31 1987-10-07 Xerox Corporation Réalisation d'images en couleur utilisant des réseaux de diffraction
RU2079167C1 (ru) * 1994-09-06 1997-05-10 Эрнест Ярославович Никируй Носитель информации
US5909313A (en) * 1993-05-25 1999-06-01 Commonwealth Scientific And Industrial Research Organisation Multiple image diffractive device
US20030232179A1 (en) * 2002-01-24 2003-12-18 Nanoventions, Inc. Light control material for displaying color information, and images

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240262A2 (fr) * 1986-03-31 1987-10-07 Xerox Corporation Réalisation d'images en couleur utilisant des réseaux de diffraction
US5909313A (en) * 1993-05-25 1999-06-01 Commonwealth Scientific And Industrial Research Organisation Multiple image diffractive device
RU2079167C1 (ru) * 1994-09-06 1997-05-10 Эрнест Ярославович Никируй Носитель информации
US20030232179A1 (en) * 2002-01-24 2003-12-18 Nanoventions, Inc. Light control material for displaying color information, and images

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220184990A1 (en) * 2019-02-28 2022-06-16 Idemia France Colour image formed from a hologram
CN111531282A (zh) * 2020-05-29 2020-08-14 青岛星成激光科技有限公司 利用飞秒激光在镜面金属材料表面进行炫彩标记的方法

Also Published As

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RU2556328C1 (ru) 2015-07-10

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