EP2681052A1 - Method for producing a colour laser image that can be observed in three dimensions and document on which a colour laser image that can be observed in three dimensions is produced - Google Patents

Method for producing a colour laser image that can be observed in three dimensions and document on which a colour laser image that can be observed in three dimensions is produced

Info

Publication number
EP2681052A1
EP2681052A1 EP12709675.8A EP12709675A EP2681052A1 EP 2681052 A1 EP2681052 A1 EP 2681052A1 EP 12709675 A EP12709675 A EP 12709675A EP 2681052 A1 EP2681052 A1 EP 2681052A1
Authority
EP
European Patent Office
Prior art keywords
rgb
pixels
sub
lens array
color laser
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.)
Granted
Application number
EP12709675.8A
Other languages
German (de)
French (fr)
Other versions
EP2681052B1 (en
Inventor
Jean-Pierre Lazzari
Jean Marc Lazzari
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2681052A1 publication Critical patent/EP2681052A1/en
Application granted granted Critical
Publication of EP2681052B1 publication Critical patent/EP2681052B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/34—Multicolour thermography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • 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
    • B42D25/24—Passports
    • 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
    • B42D25/309—Photographs
    • 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
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/455—Associating two or more layers using heat
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/46—Associating two or more layers using pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F7/00—Designs imitating three-dimensional effects

Definitions

  • the present invention relates to the production of a color laser image observable in three dimensions. It finds applications particularly in identity images dedicated to official documents: identity cards, credit cards, vital cards, passports, driving licenses, badges. secure entry, etc.
  • the modern identification cards are composed of a plastic support, comprising various decoration, identification, or anti-forgery patterns, covered by a transparent protective sheet.
  • the transparent protective sheet is hot welded and under strong pressure on the plastic support of the document. This operation is called “rolling" according to the professional language.
  • the identity documents In addition to the printed motifs on the support, the identity documents must bear the identity photo of the owner. This identity photo is produced by a laser beam which through the transparent protective sheet, which will be named later "lasérisable”, generates gray levels, by carbonization in this protective sheet. A secure black and white image is thus obtained. It can not be replaced by a image printed by inkjet for example, without destroying the identity document.
  • US Pat. No. 4,765,656 discloses an information carrier covered with cylindrical lenses through which a laser beam by severe carbonization two black and white images, distinct according to the angle of inclination of the laser beam. The reverse path of light, allows the observer to see one or the other image according to the inclination of the support.
  • the RGB primary colors therefore include the YMC colors from which they are derived.
  • These color triplets RGB, YMC are said to be independent, because the mixture of two colors of the same triplet can not form the third color of this same triplet. There is therefore a large number of independent color triplets, and therefore of
  • RGB pixels the sub-pixels whose colors correspond to the definition of independent colors
  • RGB red, green, blue
  • the present invention aims to overcome the drawbacks of the state of the art, by
  • the invention proposes a matrix of pixels comprising sub-pixels with primary colors, which will be named subsequently by pixels (RGB) an array of optical lenses, deviating the laser beam during carbonization etching of the laserizable protective sheet to form the gray levels of the sub-pixels (RGB) producing, according to the angle of incidence of the laser beam, two separate color laser images, and by reflection of the ambient light, to reveal these two color laser images separately observable or simultaneously producing in this case by effect
  • the subject of the invention is a method for forming two distinct color laser images from an assembly comprising a support, a lasérisable protection sheet, a network of cylindrical optical lenses, pixels made up of sub-pixels. (RGB), printed with primary colors in the form of parallel columns (C1, C2, C3).
  • RGB sub-pixels.
  • the lens array is composed of cylindrical, parallel lenses, and the sub pixels (RGB) of columns parallel to the primary colors having their major axis located perpendicularly to that of the long axis of the cylindrical lenses of the lens array.
  • the sub-pixel array (RGB) is printed on the laserizable, offset, ink jet, thermal transfer, or other technique. It can according to one embodiment of the invention be printed on the support.
  • the lasérisable protective sheet In a second manufacturing step, called “rolling" the lasérisable protective sheet, is heat-welded under pressure on the document support trapping the matrix of sub-pixels (RGB) between the lasérisable protective sheet, and the support of the document.
  • the lamination forms on the upper surface of the lasérisable protective sheet, the lens array. The latter partially or totally overlaps the matrix of sub pixels (RGB).
  • the formation of the images, object of the invention, apparently restoring the relief image of the subject is carried out using a laser beam which carbonizes in its thickness the lasérisable protection sheet, with intensities or variable surfaces, opposite each sub-pixel, (RGB) the laser beam scanning the sub-pixel columns (C1, C2, C3) parallel to the long axis of these columns, and having a certain angle of incidence relative to the plane of the lens array, is deflected by the latter, makes appear by carbonization in the lasérisable protective film, the gray levels of two separate images corresponding to the two stereoscopic images of the subject.
  • a laser beam which carbonizes in its thickness the lasérisable protection sheet, with intensities or variable surfaces, opposite each sub-pixel, (RGB) the laser beam scanning the sub-pixel columns (C1, C2, C3) parallel to the long axis of these columns, and having a certain angle of incidence relative to the plane of the lens array, is deflected by the latter, makes appear by carbonization in the lasérisable
  • Ambient light follows the reverse path of the laser beam, and is reflected through the lens array at different angles, both color laser images that stereoscopically appear to the observer in a direction perpendicular to the plane of the document, as a single image in three dimensions.
  • the invention also relates to a document comprising a laser image. color observable in three dimensions, by the implementation of the method above.
  • This document comprises a laserizable protective sheet on which a lens array has been hot printed. This sheet is at least partially carbonized by a laser beam.
  • Printed pixels have sub-pixels (RGB) in the form of columns. They are under the lens array and have the same surface.
  • the lasérisable protection sheet, on which the lens array, the sub-pixel (RGB) columns and the document support are located, are suitable for being laminated together.
  • the axis of the lens array is perpendicular to that of the column axis of sub pixels (RGB).
  • the formation of the three-dimensional observable color laser image is carried out on the document, by a laser beam that sweeps through the lens array, along the axis of the sub-pixel (RGB) columns at a first angle. incident on the plane of the lens array, forming the gray levels in the laserizable protective sheet, of a first color laser image taken at a first angle of the subject, and at a second angle of incidence with respect to the plane of the lens array, forming the gray levels of a second color laser image, taken at a second angle of the subject.
  • the two color laser images by inverse reflection of ambient light through the network of lenses, appear to the observer as a three-dimensional color laser image of the subject.
  • FIG. 1 shows in section according to the prior art the assembly for producing a black and white laser image producing a three-dimensional vision.
  • FIG. 2 shows in section according to the prior art the assembly for producing a color laser image.
  • FIG. 3 shows a front view of the sub-pixel columns (RGB) and the optical lens array (L1, L2, L3)
  • FIG. 4 shows in section, the path of the laser beam burning by carbonization the gray levels of color laser images.
  • FIG. 5 shows in section the reflection of the ambient light, allowing the three-dimensional vision of the laser color images.
  • FIG. 6 shows in section the sub-pixel matrix (RGB), the laserizable protective layer comprising the lens array, the assembly being laminated on the support.
  • RGB sub-pixel matrix
  • Figure 1 shows the section (13) of a lens array (10) according to the prior art.
  • the laser beams (11) and (12) having a certain angle of incidence with respect to the plane of the lens array, are deflected by the lenses and form gray levels (14) and (15) constituting two distinct images. white engraved by laser carbonization.
  • Figure 2 shows the section (20) of a . assembly comprising the support (21), a matrix (25) of sub pixels (RGB) a laser beam (23) which by carbonization in the lasérisable protective sheet (22) forms non-reflecting surfaces (24) constituting the gray levels of a color laser image, according to the prior art.
  • FIG. 3 shows a front view (30) of a matrix of sub pixels (RGB), (25) with primary colors.
  • the sub pixels of this matrix have the form of parallel columns (C1, C2, C3) aligned along their major axis (31).
  • a network (10) of cylindrical lenses, (L1, L2, L3) are aligned along their major axis (32), covers the matrix of sub pixels (RGB), (25).
  • the axes (31) of the subpixel columns and the axes (32) of the cylindrical lenses are perpendicular;
  • FIG. 4 shows the section (40) along the axis (31) of the assembly represented in FIG. sub pixel matrix (RGB), (25) is shown here in section.
  • Laserizable materials are, by way of non-limiting examples, polycarbonates, certain polyvinyl chlorides treated, acrylonitrile-butadiene-styrenes treated, or treated polyethylene terephthalates ethylene.
  • the lasérisable material is partially carbonized by the laser to form gray levels of a personalized image.
  • the lasérisable protection film is transparent and has a thickness of between 20 ⁇ m and 500 ⁇ m.
  • the laser scanning is performed along the axis (31) at a first angle of incidence (43) with respect to the plane of the lens array, forming the gray levels (46) of a first color laser image taken under a first angle of the subject, and at a second angle of incidence (44) with respect to the plane of the lens array, forming the gray levels (45) of a second color laser image, taken at a second angle of the subject.
  • Figure 5 shows in section (50) the reverse path of the ambient light through the network of. lenses (L1, L2, L3) printed on the lasérisable protective layer (22) is reflected on the matrix. sub-pixels (RGB), (25), showing the gray levels (45) of the first color image, and (46) of the second color image, to the view (53) of the observer, located at the perpendicular to the plane of the lenses (L1, L2, L3), according to the reflected rays (52) and (51) producing stereoscopic color laser vision of the subject in three dimensions.
  • RGB sub-pixels
  • FIG. 6 shows in section (60) an assembly, comprising the support (21) on which is laminated the lasérisable protection sheet (22), the matrix of sub pixels (RGB), (25) and opposite this matrix of under pixels, the lens array
  • This lens array is made by hot pressing on the sheet (22) during the lamination of the lasérisable protective sheet

Abstract

The invention relates to a colour laser image that can be observed in three dimensions. It comprises a laserable protection sheet (22), a network of lenses (10), coloured sub-pixels in a columnar form (C1,C2,C3), a laser beam that causes the grey shade levels of two colour laser images observable in three dimensions to appear by means of a stereoscopic effect, and a substrate (21). It is all laminated. The axes (31) of the columns of sub-pixels (C1,C2,C3) and the axes (32) of the lenses (L1,L2,L3) are perpendicular. The laser beam scans the sub-pixels according to the axis (32). The invention is applicable to official documents.

Description

PROCEDE DE REALISATION D'IMAGE LASER COULEUR OBSERVABLE EN TROIS DIMENSIONS ET DOCUMENT SUR LEQUEL UNE IMAGE LASER COULEUR OBSERVABLE EN TROIS DIMENSIONS EST REALISEE.  METHOD OF MAKING A LASER COLOR OBSERVABLE IN THREE DIMENSIONS AND DOCUMENT IN WHICH A LASER COLOR OBSERVABLE IN THREE DIMENSIONS IS REALIZED.
DESCRIPTIF DESCRIPTION
Domaine d'application de l'invention: Field of application of the invention
La présente invention concerne la réalisation d'une image laser couleur observable en trois dimensions. Elle trouve des applications notamment dans les images d'identité dédiées aux documents officiels : cartes d'identité, cartes de crédit, cartes vital, passeports, permis de conduire, badges . d'entrée sécurisés, etc.  The present invention relates to the production of a color laser image observable in three dimensions. It finds applications particularly in identity images dedicated to official documents: identity cards, credit cards, vital cards, passports, driving licenses, badges. secure entry, etc.
Etat de 1 ' art antérieur : State of the art:
Les cartes d'identification modernes, sont composées d'un support plastique, comprenant divers motifs de décoration, d'identification, ou d' anti-contrefaçon, recouverts par une feuille protectrice transparente. La feuille protectrice transparente est soudée à chaud et sous forte pression sur le support plastique du document. Cette opération se nomme « laminage » selon le langage professionnel.  The modern identification cards are composed of a plastic support, comprising various decoration, identification, or anti-forgery patterns, covered by a transparent protective sheet. The transparent protective sheet is hot welded and under strong pressure on the plastic support of the document. This operation is called "rolling" according to the professional language.
En plus des motifs imprimés sur le support, les documents identitaires doivent porter la photo d'identité du propriétaire. Cette photo d'identité est produite par un faisceau laser qui au travers de la feuille protectrice transparente, que l'on nommera par la suite « lasérisable », génère des niveaux de gris, par carbonisation dans cette feuille de protection. Une image noir et blanc sécurisée, est ainsi obtenue. Elle ne peut être remplacée par une image imprimée par jet d'encre par exemple, sans détruire le document identitaire. In addition to the printed motifs on the support, the identity documents must bear the identity photo of the owner. This identity photo is produced by a laser beam which through the transparent protective sheet, which will be named later "lasérisable", generates gray levels, by carbonization in this protective sheet. A secure black and white image is thus obtained. It can not be replaced by a image printed by inkjet for example, without destroying the identity document.
Afin d'élever encore le niveau sécuritaire, il a été proposé de réaliser ces images laser noir et blanc, produisant une apparence en trois dimensions. Le brevet US4765656 décrit un support d'information recouvert de lentilles cylindriques au travers desquels un faisceau laser par carbonisation grave deux images noir et blanc, distinctes selon l'angle d'inclinaison du faisceau laser. Le trajet inverse de la lumière, permet à l'observateur de voir l'une ou l'autre image selon l'inclinaison du support.  In order to raise the security level further, it has been proposed to make these black and white laser images, producing a three-dimensional appearance. US Pat. No. 4,765,656 discloses an information carrier covered with cylindrical lenses through which a laser beam by severe carbonization two black and white images, distinct according to the angle of inclination of the laser beam. The reverse path of light, allows the observer to see one or the other image according to the inclination of the support.
Le brevet WO2006110038A2 décrit à partir du dispositif précédent, une vision en relief d'un objet pris en photo selon deux angles différents, les deux images laser reproduisant ces deux prises de vues, permet à l'observateur de voir l'image de l'objet en noir et blanc, l'objet au travers des lentilles cylindriques, avec une apparence en trois dimensions. Les demandes de brevet FR 10 01415 portant le titre « Dispositif de personnalisation d'images latentes encastrées » déposée le 7 avril 2010, et la demande de brevet FR 11/00578 déposée le 28 février 2011, portant le titre «Procédé de formation d'une image laser couleur à haut rendement réflectif et document sur lequel une image laser couleur est ainsi The patent WO2006110038A2 describes from the previous device, a relief view of an object photographed from two different angles, the two laser images reproducing these two shots, allows the observer to see the image of the object in black and white, the object through the cylindrical lenses, with a three-dimensional appearance. Patent applications FR 10 01415 entitled "device for personalization of embedded latent images" filed on April 7, 2010, and patent application FR 11/00578 filed February 28, 2011, bearing the title "Training method of a reflective high-performance color laser image and document on which a color laser image is thus
réalisée » décrivent un ensemble comprenant une matrice de pixels constitués de sous pixels aux couleurs primaires, encastrée sous une feuille de protection transparente lasérisable. A l'aide d'un faisceau laser, des niveaux de gris sont créés dans la feuille de protection lasérisable, recouvrant les sous pixels RGB d'une surface non réfléchissante noire, au travers de la feuille transparente de protection. Ce traitement permet la personnalisation d'une image laser couleur de haute qualité. Les couleurs primaires RGB (en abréviation, initiales de « red, green, et bleue », en terminologie anglaise), sont obtenues par mélange à part égale de couleurs primaires jaune magenta, et cyan (YMC en abréviation, initiales de « yellow, magenta et cyan en performed "describe a set comprising a matrix of pixels consisting of sub-pixels with primary colors, embedded under a lasérisable transparent protective sheet. Using a laser beam, gray levels are created in the lasérisable protection sheet, covering the RGB sub pixels of a non-reflecting black surface, through the transparent sheet of protection. This treatment allows the customization of a high quality color laser image. The primary RGB colors (abbreviated to "red, green, and blue" in English terminology) are obtained by mixing equal parts of yellow magenta and cyan (YMC abbreviations, initials of "yellow, magenta" and cyan in
terminologie anglaise) . Les couleurs primaires RGB comprennent donc de fait les couleurs YMC dont elles sont issues. Ces triplets de couleurs RGB, YMC sont dits indépendants, car le mélange de deux couleurs d'un même triplet ne peut former la troisième couleur de ce même triplet. Il existe donc un grand nombre de triplet de couleurs indépendantes, et donc de English terminology). The RGB primary colors therefore include the YMC colors from which they are derived. These color triplets RGB, YMC are said to be independent, because the mixture of two colors of the same triplet can not form the third color of this same triplet. There is therefore a large number of independent color triplets, and therefore of
couleurs primaires. primary colors.
Nous appellerons par la suite, sous pixels RGB, les sous pixels dont les .couleurs répondent à la définition de couleurs indépendantes, et  We will call later, under RGB pixels, the sub-pixels whose colors correspond to the definition of independent colors, and
correspondent aux couleurs détectées par les correspond to the colors detected by the
bâtonnets RGB (rouge, vert, bleu) de l'œil humain.. Bien qu'intéressante à certains égards, ces RGB (red, green, blue) rods of the human eye .. While interesting in some ways, these
structures d'images laser couleurs, ne permettent pas la vision en relief. Color laser image structures, do not allow the relief vision.
Exposé de l'invention : Presentation of the invention
La présente invention, a pour but de remédier aux inconvénients, de l'état de la technique, en  The present invention aims to overcome the drawbacks of the state of the art, by
proposant une image laser couleur offrant une vision en trois dimensions. offering a color laser image offering a three-dimensional vision.
Pour ce faire, l'invention propose une matrice de pixels comprenant des sous pixels aux couleurs primaires, que l'on nommera par la suite sous pixels (RGB) un réseau de lentilles optiques, déviant le faisceau laser lors du gravage par carbonisation de la feuille de protection lasérisable pour former les niveaux de gris des sous pixels (RGB) produisant selon l'angle d'incidence du faisceau laser, deux images laser couleur distinctes, et par réflexion de la lumière ambiante, faire apparaître ces deux images laser couleur distinctes observables séparément ou simultanément produisant dans ce cas par effet To do this, the invention proposes a matrix of pixels comprising sub-pixels with primary colors, which will be named subsequently by pixels (RGB) an array of optical lenses, deviating the laser beam during carbonization etching of the laserizable protective sheet to form the gray levels of the sub-pixels (RGB) producing, according to the angle of incidence of the laser beam, two separate color laser images, and by reflection of the ambient light, to reveal these two color laser images separately observable or simultaneously producing in this case by effect
stéréoscopique, l'apparence de relief, d'une image laser couleur. stereoscopic, the appearance of relief, a color laser image.
De façon plus précise, l'invention a pour objet un procédé de formation de deux images laser couleur distinctes à partir d'un assemblage comprenant un support, une feuille de protection lasérisable, un réseau de lentilles optiques cylindriques, des pixels constitués de sous pixels (RGB) , imprimés aux couleurs primaires en forme de colonnes parallèles (C1,C2,C3). Un faisceau laser, au travers, du réseau de lentilles optiques fait apparaître par carbonisation dans la feuille de protection lasérisable en. regard de chaque sous pixel (RGB) les niveaux de gris de deux images laser couleur distinctes, issues de deux prises de vues d'un même sujet selon des angles différents. Ces deux images laser couleur par réflexion inverse de la lumière ambiante au travers du réseau de. lentilles, apparaissent à l'observateur comme une image laser couleur en trois dimensions du sujet.  More specifically, the subject of the invention is a method for forming two distinct color laser images from an assembly comprising a support, a lasérisable protection sheet, a network of cylindrical optical lenses, pixels made up of sub-pixels. (RGB), printed with primary colors in the form of parallel columns (C1, C2, C3). A laser beam, through the optical lens array, appears by carbonization in the lasérisable protection sheet. look at each sub-pixel (RGB) gray levels of two separate color laser images, from two shots of the same subject from different angles. These two color laser images by inverse reflection of the ambient light through the network of. lenses, appear to the viewer as a three-dimensional color laser image of the subject.
Le réseau de lentilles est composé de lentilles cylindriques, parallèles, et les sous pixels (RGB) de colonnes parallèles aux couleurs primaires ayant leur grand axe situé perpendiculairement par rapport à celui du grand axe des lentilles cylindriques du réseau de lentilles. La matrice de sous pixels (RGB) est imprimée sur la feuille de protection lasérisable, par offset, jet d'encre, transfert thermique, ou toute autre technique. Elle peut selon une variante de l'invention être imprimée sur le support. The lens array is composed of cylindrical, parallel lenses, and the sub pixels (RGB) of columns parallel to the primary colors having their major axis located perpendicularly to that of the long axis of the cylindrical lenses of the lens array. The sub-pixel array (RGB) is printed on the laserizable, offset, ink jet, thermal transfer, or other technique. It can according to one embodiment of the invention be printed on the support.
Dans une seconde étape de fabrication, appelée « laminage » la feuille de protection lasérisable, est soudée à chaud sous pression sur le support du document emprisonnant la matrice de sous pixels (RGB) entre la feuille de protection lasérisable, et le support du document. La lamination forme sur la surface supérieure de la feuille de protection lasérisable, le réseau de lentilles. Ce dernier, recouvre partiellement ou totalement la matrice de sous pixels (RGB) . In a second manufacturing step, called "rolling" the lasérisable protective sheet, is heat-welded under pressure on the document support trapping the matrix of sub-pixels (RGB) between the lasérisable protective sheet, and the support of the document. The lamination forms on the upper surface of the lasérisable protective sheet, the lens array. The latter partially or totally overlaps the matrix of sub pixels (RGB).
A partir de deux images stéréoscopiques d'un même sujet, prises selon deux angles différents, La formation des images, objet de l'invention, reconstituant en apparence l'image en relief du sujet, s'effectue à l'aide d'un, faisceau laser qui carbonise dans son épaisseur la feuille de protection lasérisable, selon des intensités ou des surfaces variables, en regard de chaque sous pixel, (RGB) le faisceau laser balayant les colonnes (C1,C2,C3) de sous pixels parallèlement au grand axe de ces colonnes, et ayant un certain angle d'incidence par rapport au plan du réseau de lentilles, est dévié par ce dernier, fait apparaître par carbonisation dans la feuille de protection lasérisable, les niveaux de gris de deux images distinctes correspondant aux deux images stéréoscopiques du sujet.  From two stereoscopic images of the same subject, taken from two different angles, the formation of the images, object of the invention, apparently restoring the relief image of the subject, is carried out using a laser beam which carbonizes in its thickness the lasérisable protection sheet, with intensities or variable surfaces, opposite each sub-pixel, (RGB) the laser beam scanning the sub-pixel columns (C1, C2, C3) parallel to the long axis of these columns, and having a certain angle of incidence relative to the plane of the lens array, is deflected by the latter, makes appear by carbonization in the lasérisable protective film, the gray levels of two separate images corresponding to the two stereoscopic images of the subject.
La lumière ambiante, suit le trajet inverse du faisceau laser, et se réfléchit au travers du réseau de lentilles, selon des angles différents, les deux images laser couleur qui par effet stéréoscopique apparaissent alors à l'observateur selon une direction perpendiculaire au plan du document, comme une image unique en trois dimensions. Ambient light follows the reverse path of the laser beam, and is reflected through the lens array at different angles, both color laser images that stereoscopically appear to the observer in a direction perpendicular to the plane of the document, as a single image in three dimensions.
L'invention concerne également un document comportant une image laser . couleur observable en trois dimensions, par la mise en œuvre du procédé ci- dessus. Ce document comporte une feuille de protection lasérisable sur laquelle un réseau de lentilles a été imprimé à chaud. Cette feuille est au moins partiellement carbonisée par un faisceau laser. Des pixels imprimés comportent des sous pixels (RGB) sous forme de colonnes. Ils se situent sous le réseau de lentilles et ont la même surface. La feuille de protection lasérisable, sur laquelle se situe le réseau de lentilles, les colonnes de sous pixels (RGB) et le support de document, sont aptes, à être laminés ensemble.  The invention also relates to a document comprising a laser image. color observable in three dimensions, by the implementation of the method above. This document comprises a laserizable protective sheet on which a lens array has been hot printed. This sheet is at least partially carbonized by a laser beam. Printed pixels have sub-pixels (RGB) in the form of columns. They are under the lens array and have the same surface. The lasérisable protection sheet, on which the lens array, the sub-pixel (RGB) columns and the document support are located, are suitable for being laminated together.
L'axe du réseau de lentilles est perpendiculaire à celui de l'axe des colonnes de sous pixels (RGB). La formation de l'image laser couleur observable en trois dimensions, s'effectue sur le document, par un faisceau laser qui balaye au travers du réseau de lentilles, selon l'axe des colonnes de sous pixels (RGB) sous un premier angle d'incidence par rapport au plan du réseau de lentilles, formant les niveaux de gris dans la feuille de protection lasérisable, d'une première image laser couleur prise sous un premier angle du sujet, et sous un second angle d' incidence par rapport au plan du réseau de lentilles, formant les niveaux de gris d'une seconde image laser couleur, prise sous un second angle du sujet. Les deux images laser couleurs par réflexion inverse de la lumière ambiante au travers du réseau de lentilles, apparaissent à l'observateur comme une image laser couleur en trois dimensions du sujet. The axis of the lens array is perpendicular to that of the column axis of sub pixels (RGB). The formation of the three-dimensional observable color laser image is carried out on the document, by a laser beam that sweeps through the lens array, along the axis of the sub-pixel (RGB) columns at a first angle. incident on the plane of the lens array, forming the gray levels in the laserizable protective sheet, of a first color laser image taken at a first angle of the subject, and at a second angle of incidence with respect to the plane of the lens array, forming the gray levels of a second color laser image, taken at a second angle of the subject. The two color laser images by inverse reflection of ambient light through the network of lenses, appear to the observer as a three-dimensional color laser image of the subject.
Présentation des figures : Presentation of the figures:
L' invention, apparaîtra mieux après la description qui suit, donnée à titre explicatif et nullement limitatif. Cette description se réfère aux dessins annexés, sur lesquels :  The invention will appear better after the description which follows, given for explanatory purposes and in no way limiting. This description refers to the accompanying drawings, in which:
--La figure 1 montre en coupe selon la technique antérieure l'assemblage pour la réalisation d'une image laser noir et blanc produisant une vision en trois dimensions. - Figure 1 shows in section according to the prior art the assembly for producing a black and white laser image producing a three-dimensional vision.
--La figure 2 montre en coupe selon la technique antérieure l'assemblage pour la réalisation d'une image laser couleur. - Figure 2 shows in section according to the prior art the assembly for producing a color laser image.
--La figure 3 montre une vue frontale des colonnes de sous pixels (RGB) et du réseau de lentilles optiques (L1,L2,L3) FIG. 3 shows a front view of the sub-pixel columns (RGB) and the optical lens array (L1, L2, L3)
--La figure 4 montre en coupe, le trajet du faisceau laser gravant par carbonisation les niveaux de gris des images laser couleurs. - Figure 4 shows in section, the path of the laser beam burning by carbonization the gray levels of color laser images.
—La figure 5 montre en coupe la réflexion de la lumière ambiante, permettant la vision en trois dimensions des images couleur laser. FIG. 5 shows in section the reflection of the ambient light, allowing the three-dimensional vision of the laser color images.
--la figure 6 montre en coupe la matrice de sous pixels (RGB) , la couche de protection lasérisable comprenant le réseau de lentilles l'ensemble étant laminé sur le support. FIG. 6 shows in section the sub-pixel matrix (RGB), the laserizable protective layer comprising the lens array, the assembly being laminated on the support.
La figure 1 montre la coupe (13) d'un réseau de lentilles (10) selon l'art antérieur. Les faisceaux laser (11) et (12) ayant un certain angle d' incidence par rapport au plan du réseau de lentilles, sont déviés par les lentilles et forment des niveaux de gris (14) et (15) constituant deux images distinctes rioir et blanc gravées par carbonisation laser. Figure 1 shows the section (13) of a lens array (10) according to the prior art. The laser beams (11) and (12) having a certain angle of incidence with respect to the plane of the lens array, are deflected by the lenses and form gray levels (14) and (15) constituting two distinct images. white engraved by laser carbonization.
La figure 2 montre la section (20) d' un . ensemble comprenant le support (21), une matrice (25) de sous pixels (RGB) un faisceau laser (23) qui par carbonisation dans la feuille de protection lasérisables (22) forme des surfaces non réfléchissantes (24) constituant les niveaux de gris d'une image laser couleur, selon la technique antérieure. Figure 2 shows the section (20) of a . assembly comprising the support (21), a matrix (25) of sub pixels (RGB) a laser beam (23) which by carbonization in the lasérisable protective sheet (22) forms non-reflecting surfaces (24) constituting the gray levels of a color laser image, according to the prior art.
La figure 3 montre une vue frontale (30) d'une matrice de sous pixels (RGB), (25) aux couleurs primaires. Les sous pixels .de cette matrice, ont la- forme de colonnes parallèles (Cl, C2, C3) alignées suivant leur grand axe (31) . Un réseau (10) de lentilles cylindriques, (Ll, L2, L3) sont alignées selon leur grand axe (32), recouvre la matrice de sous pixels (RGB), (25). Les axes (31) des colonnes de sous pixels et les axes (32) des lentilles cylindriques sont perpendiculaires; FIG. 3 shows a front view (30) of a matrix of sub pixels (RGB), (25) with primary colors. The sub pixels of this matrix have the form of parallel columns (C1, C2, C3) aligned along their major axis (31). A network (10) of cylindrical lenses, (L1, L2, L3) are aligned along their major axis (32), covers the matrix of sub pixels (RGB), (25). The axes (31) of the subpixel columns and the axes (32) of the cylindrical lenses are perpendicular;
La figure 4 montre la section (40) selon l'axe (31) de l'ensemble représenté à la figure 3. La matrice de sous pixels (RGB), (25) est représentée ici en coupe. Les lentilles cylindriques (L1,L2,L3) représentées en coupe perpendiculairement à leur grand axe (32) de la figure 3, sont réalisées sur la feuille de protection lasérisable (22). FIG. 4 shows the section (40) along the axis (31) of the assembly represented in FIG. sub pixel matrix (RGB), (25) is shown here in section. The cylindrical lenses (L1, L2, L3) shown in section perpendicular to their major axis (32) of Figure 3, are made on the lasérisable protective sheet (22).
Des matériaux lasérisables sont, à titre d'exemples non limitatifs, des polycarbonates , certains polychlorures de vinyle traités, des acrylonitrille-butadiène-styrènes traités, ou des poly-téréphtalates d'éthylène traités. Le matériau lasérisables est partiellement carbonisé par le laser pour former des niveaux de gris d'une image personnalisée. La feuille de protection lasérisable est transparente, et a une épaisseur comprise entre 20μιη et 500μιη.  Laserizable materials are, by way of non-limiting examples, polycarbonates, certain polyvinyl chlorides treated, acrylonitrile-butadiene-styrenes treated, or treated polyethylene terephthalates ethylene. The lasérisable material is partially carbonized by the laser to form gray levels of a personalized image. The lasérisable protection film is transparent and has a thickness of between 20 μm and 500 μm.
Le balayage laser s'effectue selon l'axe (31) sous un premier angle d'incidence (43) par rapport au plan du réseau des lentilles, formant les niveaux de gris (46) d'une première image laser couleur prise sous un premier angle du sujet, et sous un second angle d'incidence (44) par rapport au plan du réseau de lentilles, formant les niveaux de gris (45) d'une seconde image laser couleur, prise sous un second angle du sujet.  The laser scanning is performed along the axis (31) at a first angle of incidence (43) with respect to the plane of the lens array, forming the gray levels (46) of a first color laser image taken under a first angle of the subject, and at a second angle of incidence (44) with respect to the plane of the lens array, forming the gray levels (45) of a second color laser image, taken at a second angle of the subject.
La figure 5 montre en coupe (50) le parcours inverse de la lumière ambiante qui au travers du réseau de. lentilles (L1,L2,L3) imprimé sur la couche de protection lasérisable (22) se réfléchit sur la matrice . de sous pixels (RGB), (25), faisant apparaître les niveaux de gris (45) de la première image couleur, et (46) de la seconde image couleur, à la vue (53) de l'observateur, situé à la perpendiculaire du plan des lentilles (Ll,L2,L3) , selon les rayons réfléchis (52) et (51) produisant une vision laser couleur stéréoscopique du sujet en trois dimensions. Figure 5 shows in section (50) the reverse path of the ambient light through the network of. lenses (L1, L2, L3) printed on the lasérisable protective layer (22) is reflected on the matrix. sub-pixels (RGB), (25), showing the gray levels (45) of the first color image, and (46) of the second color image, to the view (53) of the observer, located at the perpendicular to the plane of the lenses (L1, L2, L3), according to the reflected rays (52) and (51) producing stereoscopic color laser vision of the subject in three dimensions.
La figure 6 montre en section (60) un ensemble, comprenant le support (21) sur lequel est laminé la feuille de protection lasérisable (22), la matrice de sous pixels (RGB), (25) et en regard de cette matrice de sous pixels, le réseau de lentillesFIG. 6 shows in section (60) an assembly, comprising the support (21) on which is laminated the lasérisable protection sheet (22), the matrix of sub pixels (RGB), (25) and opposite this matrix of under pixels, the lens array
(L1,L2,L3), (10). Ce réseau de lentilles est réalisé par pression à chaud sur la feuille (22) lors de la lamination de la feuille de protection lasérisable(L1, L2, L3), (10). This lens array is made by hot pressing on the sheet (22) during the lamination of the lasérisable protective sheet
(22) sur le support (21), emprisonnant les colonnes de sous pixels (RGB) (25) entre la feuille de protection lasérisable, (22) et le support (21). (22) on the carrier (21), trapping the sub-pixel (RGB) columns (25) between the laserizable protective sheet (22) and the carrier (21).

Claims

REVENDICATIONS
1. Procédé de formation de deux images laser couleur distinctes à partir d'un assemblage comprenant un support (21) une feuille de protection lasérisable (22 ) un réseau de lentilles optiques cylindriques (10) des pixels constitués de sous pixels (RGB) (25) imprimés aux couleurs primaires en forme de colonnes parallèles (C1,C2,C3), caractérisé en ce qu'un faisceau laser, au travers, du réseau de lentilles optiques fait apparaître par carbonisation dans la feuille de protection lasérisable (22) en regard de chaque sous pixel (RGB) les niveaux de gris de deux images laser couleur distinctes, issues de deux prises de vues d'un même sujet selon des angles différents, et 1 en ce que ces deux images laser couleur par réflexion inverse de la lumière ambiante au travers du réseau de lentilles, apparaissent à l'observateur comme une image laser couleur en trois dimensions du sujet. A method of forming two distinct color laser images from an assembly comprising a carrier (21), a lasérisable protective sheet (22), a network of cylindrical optical lenses (10), pixels consisting of sub pixels (RGB) ( 25) printed in primary colors in the form of parallel columns (C1, C2, C3), characterized in that a laser beam, through the optical lens array, appears by carbonization in the lasérisable protection sheet (22) in looking at each sub-pixel (RGB) the gray levels of two separate color laser images, from two shots of the same subject at different angles, and 1 in that these two color laser images by inverse reflection of the ambient light through the lens array, appear to the viewer as a three-dimensional color laser image of the subject.
2. Procédé de formation de deux images laser couleur distinctes à partir d'un assemblage comprenant un support (21) une feuille de protection lasérisable ( 22 ) un réseau de lentilles optiques cylindriques (10) des pixels constitués de sous pixels (RGB), (25) imprimés aux couleurs primaires en forme de colonnes parallèles (C1,C2,C3), selon la revendication 1, caractérisé en ce que l'axe (31) des colonnes (C1,C2,C3) constituant les sous pixels (RGB) est perpendiculaire à l'axe (32) du réseau de lentilles optiques (10) cylindriques (Ll,L2,L3), et en ce que ce dernier, recouvre partiellement ou totalement la matrice de sous pixels (RGB) . A method of forming two separate color laser images from an assembly comprising a carrier (21) a laserizable protective sheet (22), an array of cylindrical optical lenses (10), pixels consisting of sub pixels (RGB), (25) printed with primary colors in the form of parallel columns (C1, C2, C3), according to claim 1, characterized in that the axis (31) of the columns (C1, C2, C3) constituting the sub-pixels (RGB ) is perpendicular to the axis (32) of the network of optical lenses (10) cylindrical (L1, L2, L3), and in that the latter, partially or completely overlaps the matrix of sub pixels (RGB).
3. Procédé de formation de deux images laser couleur distinctes à partir d'un assemblage comprenant un support (21) une feuille de protection lasérisable ( 22 ) un réseau de .lentilles optiques cylindriques (10) des pixels constitués de sous pixels (RGB) , (25) imprimés aux couleurs primaires en forme de colonnes parallèles (C1,C2,C3), caractérisé en ce qu'un faisceau laser balaye la matrice (25) de colonnes (C1,C2,C3) selon, l'axe (31) sous un premier angle d'incidence (43) par rapport au plan du réseau des lentilles, formant les niveaux de gris (46) d'une première image laser couleur prise sous un premier angle du sujet, et sous un second angle d'incidence (44) par rapport au plan du réseau de lentilles, formant les niveaux de gris (45) d'une seconde image laser couleur, prise sous un second angle du sujet. A method of forming two separate color laser images from an assembly comprising a carrier (21) a laserizable protective sheet (22), an array of . cylindrical optical lenses (10) pixels consisting of sub pixels (RGB), (25) printed with primary colors in the form of parallel columns (C1, C2, C3), characterized in that a laser beam scans the matrix (25) of columns (C1, C2, C3) along the axis (31) under a first angle of incidence (43) with respect to the plane of the lens array, forming the gray levels (46) of a first laser image color taken at a first angle of the subject, and at a second angle of incidence (44) with respect to the plane of the lens array, forming the gray levels (45) of a second color laser image, taken at a second angle from subject.
4. Document comportant deux images laser couleur réalisées par la mise en œuvre du procédé, selon l'une quelconque des revendications précédentes, caractérisé en ce que le document comporte une feuille de protection lasérisable (22) sur laquelle un réseau de lentilles (10) a été imprimé, à chaud, cette feuille (22) étant au moins partiellement carbonisée par un faisceau laser, des pixels imprimes entre le réseau de lentilles (10) couvrant le même surface que le réseau de lentilles, et un support de document (21) et comportant des sous pixels (RGB) organisés sous forme de colonnes (C1,C2,C3) et en. ce que la feuille de protection lasérisable (22), les colonnes de sous pixels (RGB) et le support du document (21), sont aptes à être laminés ensemble. 4. Document comprising two color laser images produced by the implementation of the method, according to any one of the preceding claims, characterized in that the document comprises a lasérisable protective sheet (22) on which a lens array (10). was printed, hot, this sheet (22) being at least partially carbonized by a laser beam, pixels printed between the lens array (10) covering the same surface as the lens array, and a document carrier (21). ) and having sub pixels (RGB) organized in the form of columns (C1, C2, C3) and in. the lasérisable protection sheet (22), the sub-pixel columns (RGB) and the document support (21) can be laminated together.
5. Document selon la revendication précédente, caractérisé en ce que l'axe (31) des colonnes (C1,C2,C3) constituant les sous pixels (RGB) est perpendiculaire à l'axe (32) du réseau de lentilles optiques (10) cylindriques (Ll,L2,L3)et en ce que ce dernier, recouvre partiellement ou totalement la matrice de sous pixels (RGB) . 5. Document according to the preceding claim, characterized in that the axis (31) of the columns (C1, C2, C3) constituting the sub-pixels (RGB) is perpendicular to the axis (32) of the optical lens array (10). ) cylindrical (L1, L2, L3) and in that it covers partially or completely the matrix of sub pixels (RGB).
6. Document selon l'une quelconque des revendications 4 et 5, caractérisé en ce que deux images laser couleur par réflexion inverse de la lumière ambiante au travers du réseau de lentilles, apparaissent à l'observateur comme une image laser couleur en trois dimensions du sujet. 6. Document according to any one of claims 4 and 5, characterized in that two color laser images by inverse reflection of the ambient light through the lens array, appear to the observer as a three-dimensional color laser image of the subject.
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EP2681052B1 (en) 2015-04-08
US20140028775A1 (en) 2014-01-30
US9001173B2 (en) 2015-04-07
WO2012117169A1 (en) 2012-09-07
FR2972136A1 (en) 2012-09-07
FR2972136B1 (en) 2013-03-15

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