Abstract: A security document having a stack of layers including a matrix of coloured sub-pixels, an opaque layer with a white appearance above the matrix of coloured sub-pixels, the opaque layer with a white appearance having perforations facing sub-pixels of the matrix of coloured sub-pixels such that, when the device is observed from above, a coloured image appears.

Abstract: A security document including a metal layer comprising an arrangement of diffractive nanostructures arranged periodically in the metal layer to form a diffractive holographic structure forming an arrangement of pixels each comprising a plurality of sub-pixels of distinct colors, a lenticular array comprising convergent lenses positioned facing the metal layer, and a support layer on which the metal layer is disposed so that the metal layer is sandwiched between the lenticular array and the support layer. The metal layer includes perforations formed by focusing laser radiation through the lenticular array on the metal layer, the perforations including at least one group of perforations produced by focusing the laser radiation at a respective angle of incidence to reveal a corresponding personalized image when the security document is observed at this angle of incidence.

Abstract: An identity document and method for manufacturing the identity document, the method including providing a document body that includes at least a first and a second transparent external layer and a white central layer, the white central layer including a transparent substrate at least partially covered with a photosensitive opaque white coating, and exposing at least a point of the photosensitive opaque white layer to a first radiation, the radiation being able to perform ablation of the photosensitive opaque white layer, so that the point exposed to the radiation becomes transparent, and so that light passes through the thickness of the identity document at that point.

Abstract: A method for manufacturing a two-dimensional colored bar code comprising an arrangement of colored basic structural elements encoding at least one information element, the manufacturing method comprising determining, by data processing means, a set of colored basic structural elements corresponding to the at least one information element, at least one structural element of the set comprising a pattern; and forming the at least one structural element of the set on a backing, in order to create the arrangement of colored basic structural elements.

Abstract: A security document may include a laserizable first layer including a grayscale image formed by laserizing; a color pattern that is in alignment with the grayscale image; and a second layer arranged between the first layer and the pattern, such that the first layer is above the second layer, and the pattern is below the second layer. The second layer may be more opaque than the first layer, such that when observing the security document from the top, the grayscale image appears to be colored by the color pattern only when the bottom of the security document is being illuminated.

Abstract: A color image is disclosed. The color image comprises: a first layer including a holographic structure forming an arrangement of pixels each including sub-pixels of distinct colors; and color modulation means configured to select the color of the pixels by modifying the colorimetric contribution of the sub-pixels relative to each other in the pixels so as to reveal a customized color image. The color modulation means can comprise: regions of the holographic structure, called destroyed regions, which are locally destroyed by laser; masking means positioned facing the arrangement of pixels to locally mask all or part of the sub-pixels; or amplification means positioned facing the arrangement of pixels to locally amplify the lightness of all or part of the sub-pixels.

Abstract: A process for producing, under a lenticular grating, in an etching zone, by laser etching, using a tool, a first image and at least one second image that may be selectively viewed by varying angle of observation, the tool including a laser, a galvanometric head and a lens, and defining an optical axis and a working zone, which includes steps of: placing the etching zone in a first location included in the working zone and on the periphery of the working zone, and, perpendicularly to the optical axis, etching the first image; and then placing the etching zone in a second location, which is different from the first location, included in the working zone and on the periphery of the working zone, and, perpendicularly to the optical axis, etching the second image.

Abstract: The invention proposes a document configured to generate a color image, comprising: a set of pixels printed on or in a substrate, each pixel forming a pattern including an arrangement of sub-pixels of at least two different colors; and an array of lenses disposed opposite the set of pixels so as to generate the color image by focusing or diverging an incident light through the lenses on at least part of the sub-pixels, each lens being positioned, relative to a facing associated pixel, to focus or diverge the incident light on at least one of the sub-pixels of said associated pixel so as to modify the contribution of the respective colors of the sub-pixels of the associated pixel, in a region of the color image generated through said lens, with respect to the pattern intrinsically formed by the associated pixel independently of said lens.

Abstract: The invention proposes a document configured to generate a color image, comprising: a set of pixels printed on or in a substrate, each pixel forming a pattern including an arrangement of sub-pixels of at least two different colors; and an array of lenses disposed opposite the set of pixels so as to generate the color image by focusing or diverging an incident light through the lenses on at least part of the sub-pixels, each lens being positioned, relative to a facing associated pixel, to focus or diverge the incident light on at least one of the sub-pixels of said associated pixel so as to modify the contribution of the respective colors of the sub-pixels of the associated pixel, in a region of the color image generated through said lens, with respect to the pattern intrinsically formed by the associated pixel independently of said lens.

Abstract: A security document may include a laserizable first layer including a grayscale image formed by laserizing; a color pattern that is in alignment with the grayscale image; and a second layer arranged between the first layer and the pattern, such that the first layer is above the second layer, and the pattern is below the second layer. The second layer may be more opaque than the first layer, such that when observing the security document from the top, the grayscale image appears to be colored by the color pattern only when the bottom of the security document is being illuminated.

Abstract: A method for producing a security device (1) comprising a first colour pattern (A) visible along an associated viewing axis (??) and at least one second colour pattern (B) visible along an associated viewing axis (??), comprising the following steps:—assembling an image layer (4) suitable for forming at least one colour pattern (A, B) by laser etching, on a support (3),—laser etching the first colour pattern (A) in the image layer (4), along the associated viewing axis (??) of same, in such a way that it can be seen through a lens array (7),—for each of said at least one second colour pattern (B), laser etching said at least one second colour pattern (A) in the image layer (4), along the associated viewing axis (??) of same, in such a way that it can be seen through a lens array (7). A security device (1) obtained by said method.

Abstract: A security document may include a laserizable first layer including a grayscale image formed by laserizing; a color pattern that is in alignment with the grayscale image; and a second layer arranged between the first layer and the pattern, such that the first layer is above the second layer, and the pattern is below the second layer. The second layer may be more opaque than the first layer, such that when observing the security document from the top, the grayscale image appears to be colored by the color pattern only when the bottom of the security document is being illuminated.

Abstract: A method and device for producing a target image having pixels (2) juxtaposed in a substrate (1) presenting thickness and producing an image presenting thickness such that each pixel (2) produces a shadowing effect on its neighboring pixels. The method includes: determining a production setpoint from the target image; and producing an image made by the device using the production setpoint. The determining operation replaces the production setpoint with an improved production setpoint that is determined by modeling the image production device using a transfer function for transforming a production setpoint into a predicted image; and determining an improved production setpoint in which the image produced by the transfer function is as close as possible to the target image, so as to reduce the consequences of the shadowing effect in the resulting image. Also included is the image produced by such a method.

Abstract: An object processing machine for processing a plurality of objects, the machine comprising: a plurality of processing modules, each processing module having a modular structure co-operable with the modular structure of another processing module to form a modular assembly constituting the object processing machine; each processing module being operable to perform a corresponding processing operation on an object and being provided with at least one transfer unit located at a respective port of the processing module; each transfer unit being arranged to transfer an object to or from the corresponding processing module and/or to or from a transfer unit of another processing module of the modular assembly; the transfer units being arranged to co-operate with one another and/or with another processing unit such that objects can be guided from an input of the machine to an output of the machine via a plurality of different transport pathways through the machine, wherein the transport pathway taken by a said object

Abstract: A method for verifying a security device including an image having a signature. The method may include operations for acquiring the image in order to obtain a first representation of the image, extracting the signature, and verifying the signature. Also included are implementations in the form of a verification apparatus, a computer program, and a computer data medium including such a computer program.

Abstract: A method and device for producing a target image having pixels (2) juxtaposed in a substrate (1) presenting thickness and producing an image presenting thickness such that each pixel (2) produces a shadowing effect on its neighboring pixels. The method includes: determining a production setpoint from the target image; and producing an image made by the device using the production setpoint. The determining operation replaces the production setpoint with an improved production setpoint that is determined by modeling the image production device using a transfer function for transforming a production setpoint into a predicted image; and determining an improved production setpoint in which the image produced by the transfer function is as close as possible to the target image, so as to reduce the consequences of the shadowing effect in the resulting image. Also included is the image produced by such a method.

Abstract: A method for producing a security device (1) comprising a first colour pattern (A) visible along an associated viewing axis (??) and at least one second colour pattern (B) visible along an associated viewing axis (??), comprising the following steps:—assembling an image layer (4) suitable for forming at least one colour pattern (A, B) by laser etching, on a support (3),—laser etching the first colour pattern (A) in the image layer (4), along the associated viewing axis (??) of same, in such a way that it can be seen through a lens array (7),—for each of said at least one second colour pattern (B), laser etching said at least one second colour pattern (A) in the image layer (4), along the associated viewing axis (??) of same, in such a way that it can be seen through a lens array (7). A security device (1) obtained by said method.

Abstract: Disclosed is a process for producing, under a lenticular grating, in an etching zone, by laser etching, using a tool, a first image and at least one second image that may be selectively viewed by varying angle of observation, the tool including a laser, a galvanometric head and a lens, and defining an optical axis and a working zone and the process including the following steps: placing the etching zone in a first location included in the working zone and on the periphery of the working zone, and, perpendicularly to the optical axis, etching the first image; and then placing the etching zone in a second location, which is different from the first location, included in the working zone and on the periphery of the working zone, and, perpendicularly to the optical axis, etching the second image.

Abstract: A method for verifying a security device including an image having a signature. The method may include operations for acquiring the image in order to obtain a first representation of the image, extracting the signature, and verifying the signature. Also included are implementations in the form of a verification apparatus, a computer program, and a computer data medium including such a computer program.