Patents by Inventor Jean-Francois Mainguet

Jean-Francois Mainguet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10949638
    Abstract: The invention relates to a manufacturing process of a pixel array of a thermal pattern sensor comprising the steps of: providing a substrate; depositing a first layer of electrically conductive material, including depositing electrically conductive tracks, depositing of connector pins and depositing a ground strip; depositing of second layer of pyroelectric material covering the tracks and leaving at least part of the connector pins free; depositing of third layer of electrically conductive material; depositing of fourth layer of dielectric material in contact with the third layer; depositing of a fifth layer including electrically conductive heating tracks; depositing of a sixth protective layer, wherein the step of depositing the second and/or third and/or fourth and/or sixth layer is carried out by slot-die coating.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: March 16, 2021
    Assignees: IDEMIA IDENTITY & SECURITY FRANCE, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jean-Francois Mainguet, Joel-Yann Fourre, Christophe Serbutoviez, Mohammed Benwadih
  • Patent number: 10908427
    Abstract: A system for vision in virtual reality or augmented reality is provided, in a support to be mounted on a head of a user, the system including a matrix of light-emission elements extending according to a display surface for display of images configured to be seen by the user; an optical projection system to form an image of the elements on a focusing surface at a distance from an eye of the user; a matrix of photo-detectors to acquire an image of a region of the eye extending according to a capture surface and arranged coplanar with the elements and at least partially overlapping with the capture surface and the display surface; and a computer to receive as an input the image acquired, and to process the same to deduce a parameter relative to the user, the optical projection system being a variable-focal-length optical system.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 2, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Jean-Francois Mainguet
  • Patent number: 10909345
    Abstract: Method for capturing a heat pattern with a sensor including a plurality of pixels each comprising a heat-sensitive measuring element, the sensor comprising an element for heating the measuring element, the method including carrying out the following steps for each pixel: a first heating step in which a first amount of heating power is dissipated in the measuring element; a first step of measuring the heat pattern, comprising a first read-out of the heat-sensitive measuring element, after a first delay time; a second heating step in which a second amount of heating power is dissipated in the measuring element; a second step of measuring the heat pattern, comprising a second read-out after a second delay time; and wherein the first amount of power is different from the second amount of power and/or the length of the first delay time is different from that of the second delay time.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: February 2, 2021
    Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-François Mainguet, Joël Yann Fourre
  • Publication number: 20210018371
    Abstract: The invention relates to a pixel matrix of a thermal pattern sensor comprising several rows and several columns of pixels, said matrix comprising: an active thermal element formed by a thermosensitive material disposed between a lower layer and an upper layer, the lower layer being constituted by a plurality of first tracks made of electrically conductive material and extending along a first direction, said first tracks forming pixel columns; a heating element, disposed on the active thermal element and forming a serpentine path, said heating element being constituted by a plurality of second tracks (L1, L2, L3, L4, L5, L6) made of electrically conductive material and connecting segments (w1, w2, w3, w4, w5, w6) made of electrically conductive material connected to the ends of the second tracks (L1, L2, L3, L4, L5, L6), said second tracks (L1, L2, L3, L4, L5, L6) extending in a second direction different from the first direction and forming lines of pixels, the second tracks being connected except for the
    Type: Application
    Filed: July 17, 2020
    Publication date: January 21, 2021
    Applicants: IDEMIA IDENTITY & SECURITY FRANCE, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Joël-Yann FOURRE, Jean-François MAINGUET
  • Publication number: 20210018370
    Abstract: Method for capturing a thermal pattern by a sensor comprising a plurality of pixels each comprising a heat-sensitive measuring element, the method comprising, for each pixel: heating the measuring element; first reading of the electrical charges outputted by the pixel during a first measurement duration and giving a first measurement value x1; second reading of the electrical charges outputted by the pixel during a second measurement duration and giving a second measurement value x2; calculating a difference x1??·x2, where ? is a positive real number, and wherein more than half of the heating duration is implemented during the first measurement duration and less than half of the heating duration is implemented during the second measurement duration.
    Type: Application
    Filed: July 8, 2020
    Publication date: January 21, 2021
    Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-Francois MAINGUET, Joel Yann FOURRE
  • Patent number: 10867152
    Abstract: Thermal pattern sensor including a matrix of multiple rows and columns of pixels, each pixel comprising: - a pyroelectric capacitor comprising a pyroelectric portion positioned between lower and upper electrodes, in which a first of these electrodes forms a readout electrode; and —a heating element that is capable of heating the pyroelectric portion of said pixel; and in which: - for each row of pixels, the heating elements are capable of heating the pyroelectric portion of the pixels of the row independently of the heating elements of the pixels of the other rows; and —for each column of pixels, the readout electrodes of each pixel are electrically linked to one another and are formed by a first electrically conductive portion that makes contact with the pyroelectric portions of the pixels of the column, and that is separate from the first portions of the other columns.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: December 15, 2020
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Jean-François Mainguet, Joël Yann Fourre, Josep Segura Puchades
  • Patent number: 10810406
    Abstract: A method for determining if a papillary print is comprised of living human tissue or not, using a papillary print sensor comprising in superposition, a contact surface, an array optical sensor, and a plurality of illuminating devices parallel between them. The method comprises illumination of the papillary print by the illuminating devices forming together, on the contact surface, a light pattern which is uniform along an axis that extends from one side to the other of a detecting surface of the array optical sensor, and acquisition of an image by the array optical sensor, with these steps being implemented at least once; in each image, selection of the pixels corresponding to the valleys or ridges of the print; and using the pixels selected, extraction of an optical characteristic defining the response to illumination, of the material comprising the papillary print.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 20, 2020
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SCIENCE FRANCE
    Inventors: Jean-François Mainguet, Jérôme Boutet, Joël Yann Fourre
  • Publication number: 20200311366
    Abstract: Method for capturing a heat pattern with a sensor including a plurality of pixels each comprising a heat-sensitive measuring element, the sensor comprising an element for heating the measuring element, the method including carrying out the following steps for each pixel: a first heating step in which a first amount of heating power is dissipated in the measuring element; a first step of measuring the heat pattern, comprising a first read-out of the heat-sensitive measuring element, after a first delay time; a second heating step in which a second amount of heating power is dissipated in the measuring element; a second step of measuring the heat pattern, comprising a second read-out after a second delay time; and wherein the first amount of power is different from the second amount of power and/or the length of the first delay time is different from that of the second delay time.
    Type: Application
    Filed: November 28, 2016
    Publication date: October 1, 2020
    Inventors: Jean-François MAINGUET, Joël Yann FOURRE
  • Patent number: 10719685
    Abstract: A papillary print sensor comprising in superposition a contact surface to which the print to be imaged is intended to be applied, an array optical sensor and illuminating device. The illuminating device is arranged between the contact surface and a detecting surface of the array optical sensor, and consists of a plurality of organic light-emitting diodes, referred to as OLEDs. Each OLED extends uninterruptedly over more than a third of a width (L1) of the detecting surface, and the OLEDs extend together along one or two series of patterns that are parallel to one another and distributed along the length (L2) of the detecting surface. This configuration of the OLEDs allows in particular the transistors for controlling the OLEDs to be placed off the detecting surface (125).
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 21, 2020
    Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-François Mainguet, Jérôme Boutet, Joël Yann Fourre, François Templier
  • Patent number: 10691915
    Abstract: A compact device for capturing an imprint of a body part working by total reflection with dark background. The device includes a plurality of optically coupled elements including: a first transparent plate including a top face on which the body part bearing the imprint to be imaged can rest; a light source; a screen opaque to light situated below the first transparent plate including a network of holes; a second transparent plate situated below the opaque screen; and a sensor capable of generating an imprint image situated below the second transparent plate; each transparent plate having a refractive index greater than a refractive index of air, and the light source being able to be positioned at the level of the screen to directly illuminate the top face or below the screen to illuminate the top face through the holes.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: June 23, 2020
    Assignees: IDEMIA IDENTITY & SECURITY FRANCE, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Joël-Yann Fourre, Jean-François Mainguet
  • Publication number: 20200194653
    Abstract: Method for manufacturing a device comprising a stack including a first layer comprising electrical conductors electrically insulated from each other, a second electrically conducting layer, a third layer of pyroelectric material, said third layer being arranged between the first layer and the second layer, said method comprising, a) producing said stack on a substrate, the material of the third layer not being pyroelectric at this stage, b) producing a polarisation layer made of epoxy glue in electrical contact with the electrical conductors in the first layer, c) applying polarisation voltage to said third layer such that its material becomes pyroelectric, d) exposing the polarisation layer in its second state by ultraviolet radiation so as to make it at least partly electrically insulating.
    Type: Application
    Filed: December 16, 2019
    Publication date: June 18, 2020
    Applicant: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Jean-Francois MAINGUET, Amelie Revaux
  • Publication number: 20200124482
    Abstract: A thermal pattern sensor including a plurality of pixels arranged on a substrate. Each pixel has a pyroelectric capacitance formed by at least one pyroelectric material portion arranged between a lower electrode and an upper electrode. The sensor has an abrasion-resistance coating, located on the side opposite the substrate and including pillars embedded in an abrasion-resistance layer, the pillars having a thermal conductivity strictly higher than that of the abrasion-resistance layer. A high thickness of the anti-abrasion protection coating can be achieved with a high rate of thermal transfer through the latter.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 23, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ATTERNATIVES
    Inventors: Amelie REVAUX, Mohammed Benwadih, Jean-Francois Mainguet
  • Publication number: 20200103655
    Abstract: A system for vision in virtual reality or augmented reality is provided, in a support to be mounted on a head of a user, the system including a matrix of light-emission elements extending according to a display surface for display of images configured to be seen by the user; an optical projection system to form an image of the elements on a focusing surface at a distance from an eye of the user; a matrix of photo-detectors to acquire an image of a region of the eye extending according to a capture surface and arranged coplanar with the elements and at least partially overlapping with the capture surface and the display surface; and a computer to receive as an input the image acquired, and to process the same to deduce a parameter relative to the user, the optical projection system being a variable-focal-length optical system.
    Type: Application
    Filed: September 23, 2019
    Publication date: April 2, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Jean-Francois MAINGUET
  • Patent number: 10591360
    Abstract: A pyroelectric sensor includes several pixels distributed above a substrate and each pixel includes a first portion made of a pyroelectric material, in direct physical contact with a charge collection electrode, a second portion made of a pyroelectric material, in direct physical contact with a charge collection electrode, the first portion, the second portion and the at least one charge collection electrode being superposed above the substrate, at least one heating element to heat the first and second portions including a pyroelectric material, and an electronic device to measure a difference between charges generated by the first portion including a pyroelectric material and charges generated by the second portion including a pyroelectric material. The pyroelectric sensor makes it possible to suppress a useless part of a measurement signal. It is particularly advantageous for taking an image of a papillary print.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: March 17, 2020
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-Francois Mainguet, Joel Yann Fourre
  • Patent number: 10586088
    Abstract: The invention relates to a skin print sensor (120) comprising a plurality of elementary acquisition cells (121) which are arranged in and/or on a substrate and each of which includes: a pyroelectric conversion element (PYR) comprising first and second electrodes that are separated by a layer of pyroelectric material, the first electrode being connected to a node (GND) applying a reference potential of the sensor, and the second electrode being connected to a reading node (SN) of the cell; and a third electrode (EL) which is connected to the reading node (SN), is coated with a dielectric layer and is designed to form a capacitance along with the skin of a user.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: March 10, 2020
    Assignees: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-François Mainguet, Joel Yann Fourre, Josep Segura Puchades
  • Patent number: 10580956
    Abstract: A method produces a matrix of pixels of a thermal sensor, suitable for passive addressing. The matrix of pixels includes a layer including a first series of electrically conducting strips, forming charge collection macro-electrodes; a layer including a pyroelectric material; and a layer including a second series of electrically conducting strips, forming heating strips. The method includes a step of transfer of one on the other of a first and a second elementary stack, the first elementary stack including the first series of strips, and the second elementary stack including the second series of strips. This method makes it possible to relax the manufacturing constraints of the series of strips.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: March 3, 2020
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Amelie Revaux, Joel Yann Fourre, Jean-Francois Mainguet
  • Publication number: 20200057879
    Abstract: The invention relates to a manufacturing process of a pixel array of a thermal pattern sensor comprising the steps of: providing a substrate; depositing a first layer of electrically conductive material, including depositing electrically conductive tracks, depositing of connector pins and depositing a ground strip; depositing of second layer of pyroelectric material covering the tracks and leaving at least part of the connector pins free; depositing of third layer of electrically conductive material; depositing of fourth layer of dielectric material in contact with the third layer; depositing of a fifth layer including electrically conductive heating tracks; depositing of a sixth protective layer, wherein the step of depositing the second and/or third and/or fourth and/or sixth layer is carried out by slot-die coating.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 20, 2020
    Inventors: Jean-Francois MAINGUET, Joel-Yann FOURRE, Christophe SERBUTOVIEZ, Mohammed BENWADIH
  • Publication number: 20200026897
    Abstract: Thermal pattern sensor including a matrix of multiple rows and columns of pixels, each pixel comprising: a pyroelectric capacitor comprising a pyroelectric portion positioned between lower and upper electrodes, in which a first of these electrodes forms a readout electrode; and a heating element that is capable of heating the pyroelectric portion of said pixel; and in which: for each row of pixels, the heating elements are capable of heating the pyroelectric portion of the pixels of the row independently of the heating elements of the pixels of the other rows; and for each column of pixels, the readout electrodes of each pixel are electrically linked to one another and are formed by a first electrically conductive portion that makes contact with the pyroelectric portions of the pixels of the column, and that is separate from the first portions of the other columns.
    Type: Application
    Filed: July 27, 2017
    Publication date: January 23, 2020
    Inventors: Jean-François Mainguet, Joël Yann Fourre, Josep Segura Puchades
  • Patent number: 10489625
    Abstract: A thermal pattern sensor is provided, including a matrix of several lines and columns of pixels, each pixel including at least one pyroelectric capacitance formed by at least one portion of pyroelectric material arranged between a lower electrode and an upper electrode; wherein one of the lower and upper electrodes forms a reading electrode of the pixels; and a plurality of electrically conductive portions, each being configured for Joule effect heating, independently of other portions of the plurality, of the at least one portion of pyroelectric material of the at least one pyroelectric capacitance of pixels of at least two adjacent lines of pixels associated with the each electrically conductive portion, and each being arranged facing at least a part of a surface of the reading electrode of each of the pixels of the at least two adjacent lines of pixels associated with the each electrically conductive portion.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 26, 2019
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-Francois Mainguet, Joel Yann Fourre
  • Patent number: 10474864
    Abstract: There is provided a method of capturing a thermal pattern by a sensor including a matrix of several rows and columns of pixels, and heating elements, each heating element associated with at least one pixel, and configured to heat a heat sensitive measurement element for measurement of the pixel independently of other heating elements during reading of the pixel, the method including, during a reading of at least one first pixel, the heat sensitive measurement element of the at least one first pixel is heated by a heating element associated with the at least one first pixel, and also during the reading, the heat sensitive measurement element of at least one second pixel is heated by at least one other heating element associated with the at least one second pixel, the at least one second pixel being read before or after the reading of the at least one first pixel.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 12, 2019
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, IDEMIA IDENTITY & SECURITY FRANCE
    Inventors: Jean-Francois Mainguet, Joel Yann Fourre