Patents by Inventor Christophe Martinez

Christophe Martinez 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).

  • Publication number: 20240219725
    Abstract: Device (1) for projecting an image onto an eye (O), comprising: a light emitter, along various emission axes; an optical combiner (30), configured to form, from each light wave, a collimated light wave; the device being such that: the light emitter comprises a directional screen (10), comprising various pixels (10i), configured to emit a divergent light wave along a predefined emission axis; the combiner has an object focal plane; the directional screen is placed in the object focal plane of the combiner; the optical combiner is configured to receive each light wave emitted by a pixel and to form a collimated light wave that propagates towards a central position (C3); the respective emission axes of various pixels of the directional screen converge to the same target point, downstream of the combiner; FIG.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 4, 2024
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Christophe MARTINEZ
  • Publication number: 20240219726
    Abstract: The invention relates to a device for projecting an image onto an eye, the device comprising: a light emitter, configured to emit light waves along various respective emission axes; an optical combiner, optically coupled to the light emitter, and configured to form, from each light wave emitted by the light emitter, a collimated light wave that propagates to the pupil of the eye; the device being characterized in that: the light emitter comprises a screen, comprising various pixels, each pixel being configured to emit a divergent light wave that propagates around an emission axis, the various pixels emitting respective divergent light waves that propagate along various emission axes, respectively; the optical combiner is configured to receive each light wave emitted by a pixel and to form a collimated light wave that propagates towards a central position corresponding to the centre of the pupil of the eye.
    Type: Application
    Filed: December 29, 2023
    Publication date: July 4, 2024
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Christophe MARTINEZ
  • Publication number: 20240201442
    Abstract: An optical coupling device (100) configured to optically couple a first optical guide device (102) to a second optical guide device (104), comprising at least one first optical input-output through which the first optical guide device is intended to emit and/or receive a first light beam (103), and a second optical input-output through which the second optical guide device is intended to receive and/or emit the first light beam, further including at least one holographic diffraction structure (108) configured to guide and adapt the first light beam between the first and second optical inputs-outputs of the optical coupling device.
    Type: Application
    Filed: December 18, 2023
    Publication date: June 20, 2024
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Christophe MARTINEZ, Daivid FOWLER, Quentin WILMART, Loïc LAPLATINE
  • Publication number: 20240201441
    Abstract: A multilevel retro-coupling device for an electromagnetic radiation, including at least one first level (n1) and one second level (n2) at least partially superposed, the first level including a first waveguide intended to guide a propagation of the light radiation in a first direction (s1) and the second level comprising a second waveguide intended to guide the propagation of the light radiation in a second direction (s2) opposite the first direction, the device including: a coupling portion, wherein the first and second waveguides are coupled by moving them closer to one another, such that the electromagnetic radiation is propagated from the first level (n1) to the second level (n2), and at least one reflector at an end of the coupling portion, configured to reflect the electromagnetic radiation.
    Type: Application
    Filed: December 15, 2023
    Publication date: June 20, 2024
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Kyllian MILLARD, Christophe MARTINEZ
  • Patent number: 11954829
    Abstract: The invention relates to a videoconferencing system 1, comprising: a display screen 10, for displaying an image Ie(ti) containing N images Iint(k)(ti); a camera 20, for acquiring an image Ic(tj); a single-pixel-imager-employing optical device suitable for determining N images Ico(k)(tj) on the basis of sub-matrices SMimp(k)(tj) comprising: an optical source 31, suitable for irradiating an ocular portion Po(tj) of the face of the user; a matrix of single-pixel imagers that are suitable for reconstructing a correction image Ico(k)(tj) on the basis of the light beam reflected by the ocular portion Po(tj); a processing unit 40, suitable for: determining, in each image Iint(k)(ti) of the image Ie(ti), a target point Pc(k)(tj), then selecting N sub-matrices SMimp(k)(tj) each centred on a target point Pc(k)(tj); correcting the image Ic(tj), by replacing a region of the image Pc(tj) representing the ocular portion Po(tj) with the N images Ico(k)(tj).
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: April 9, 2024
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Christophe Martinez, François Templier
  • Publication number: 20220413193
    Abstract: A retroreflective screen comprising including a film having a surface including a plurality of microrecesses, each microrecess having the shape of a truncated pyramid, the lateral walls and the back of each microrecess being coated with a reflective metallization.
    Type: Application
    Filed: October 14, 2020
    Publication date: December 29, 2022
    Applicant: Commissariat à l'Énergie Atomique et aux Énergie Alternatives
    Inventors: Christophe Martinez, Yann Lee
  • Publication number: 20220381968
    Abstract: Device for projecting an image onto an eye, the device comprising a stack comprising light guides, each light guide being coupled to a plurality of diffraction gratings, electrodes, each electrode being associated with a plurality of diffraction gratings of various light guides, each electrode being configured to activate each diffraction grating with which it is associated, a holographic film, the device being characterized in that each light guide extends along a longitudinal axis, in such a way as to form rectilinear segments, two successive rectilinear segments of a given light guide making two different acute angles to the longitudinal axis.
    Type: Application
    Filed: May 11, 2022
    Publication date: December 1, 2022
    Applicant: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Fabian RAINOUARD, Christophe MARTINEZ
  • Publication number: 20220366545
    Abstract: The invention relates to a videoconferencing system 1, comprising: a display screen 10, for displaying an image Ie(ti) containing N images Iint(k)(ti); a camera 20, for acquiring an image Ic(tj); a single-pixel-imager-employing optical device suitable for determining N images Ico(k)(tj) on the basis of sub-matrices SMimp(k)(tj) comprising: an optical source 31, suitable for irradiating an ocular portion Po(tj) of the face of the user; a matrix of single-pixel imagers that are suitable for reconstructing a correction image Ico(k)(tj) on the basis of the light beam reflected by the ocular portion Po(tj); a processing unit 40, suitable for: determining, in each image Iint(k)(ti) of the image Ie(ti), a target point Pc(k)(tj), then selecting N sub-matrices SMimp(k)(tj) each centred on a target point Pc(k)(tj); correcting the image Ic(tj), by replacing a region of the image Pc(tj) representing the ocular portion Po(tj) with the N images Ico(k)(tj).
    Type: Application
    Filed: May 12, 2022
    Publication date: November 17, 2022
    Applicant: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Christophe MARTINEZ, François TEMPLIER
  • Publication number: 20220276425
    Abstract: A matrix-array optical component that includes, superposed, a holder, a matrix-array of reflectors and at least one matrix-array of holographic lenses with the holder placed between the matrix-array of reflectors and the at least one matrix-array of holographic lenses. The holographic lenses are each formed by at least one reflection hologram, and each includes a through-aperture for letting light pass. Each individual cell of the matrix-array optical component includes one reflector of the matrix-array of reflectors and one holographic lens of the matrix-array of holographic lenses, which are arranged opposite one another on either side of the holder with respective reflective faces of the reflector and of the holographic lens located facing. Thus, a planar matrix-array optical component with a focusing efficiency higher than or equal to 50% and able to focus an incident light beam axially is produced.
    Type: Application
    Filed: July 2, 2020
    Publication date: September 1, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Christophe MARTINEZ
  • Publication number: 20210231861
    Abstract: A Distributed light projection device, including: one or a plurality of waveguides; and above each waveguide, a plurality of extraction cells coupled to distinct portions of the guide, each extraction cell including first and second stacked diffraction gratings.
    Type: Application
    Filed: January 20, 2021
    Publication date: July 29, 2021
    Applicant: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Christophe Martinez, Daivid Fowler, Basile Meynard
  • Patent number: 10935879
    Abstract: The invention relates to a system for forming a floating image, including: at least one image projector, a display screen including transparent segments and scattering segments, and a semi-reflective structure placed between the image projector and the display screen, including a face, termed the transmission face, suitable for transmitting light beams coming from the image projector and light beams coming from the scene to be observed, and an opposite face, termed the reflection face, suitable for reflecting light beams coming from the display screen, so as to form a virtual image, termed the floating image, of the image projected onto the display screen.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: March 2, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Christophe Martinez
  • Patent number: 10583585
    Abstract: A method of manufacturing a primary mold for the forming of a retroreflective screen, the method including the steps of: a) forming, on the front surface of such a substrate, a layer of a material such that the first substrate is selectively etchable over said layer; and b) forming microrecesses from the rear surface of the first substrate by selective etching of the first substrate over said layer, each microrecess emerging on the rear surface of said layer and having a back parallel to the front surface of the first substrate and first and second lateral walls orthogonal to each other and orthogonal to the back the first and second lateral walls and the back of the microrecess joining at a same point and forming a trihedron.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: March 10, 2020
    Assignee: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Christophe Martinez, Bernard Aventurier
  • Patent number: 10585280
    Abstract: The invention relates to a method of manufacturing a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: March 10, 2020
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVE
    Inventors: Christophe Martinez, Umberto Rossini
  • Publication number: 20190235375
    Abstract: The invention relates to a system for forming a floating image, including: at least one image projector, a display screen including transparent segments and scattering segments, and a semi-reflective structure placed between the image projector and the display screen, including a face, termed the transmission face, suitable for transmitting light beams coming from the image projector and light beams coming from the scene to be observed, and an opposite face, termed the reflection face, suitable for reflecting light beams coming from the display screen, so as to form a virtual image, termed the floating image, of the image projected onto the display screen.
    Type: Application
    Filed: October 10, 2017
    Publication date: August 1, 2019
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Christophe MARTINEZ
  • Publication number: 20180239135
    Abstract: The invention relates to a method of manufacturing a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Inventors: Christophe MARTINEZ, Umberto ROSSINI
  • Patent number: 9977240
    Abstract: The invention relates to a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: May 22, 2018
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Christophe Martinez, Umberto Rossini
  • Patent number: 9939639
    Abstract: A retroreflective screen including a first film having a surface including a plurality of microrecesses, each microrecess having a bottom substantially parallel to the mean plane of the screen and first and second lateral walls substantially orthogonal to each other and substantially orthogonal to the bottom, the first and second lateral walls and the bottom of the microrecess joining at a same point and forming a trihedron.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 10, 2018
    Assignee: Commissariat à l'Energie Atomique et aux Énergies Alternatives
    Inventor: Christophe Martinez
  • Publication number: 20180052323
    Abstract: A retroreflective screen including a first film having a surface including a plurality of microrecesses, each microrecess having a bottom substantially parallel to the mean plane of the screen and first and second lateral walls substantially orthogonal to each other and substantially orthogonal to the bottom, the first and second lateral walls and the bottom of the microrecess joining at a same point and forming a trihedron.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 22, 2018
    Applicant: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventor: Christophe Martinez
  • Patent number: 9835860
    Abstract: A retroreflective screen including a first film having a surface including a plurality of microrecesses, each microrecess having a bottom substantially parallel to the mean plane of the screen and first and second lateral walls substantially orthogonal to each other and substantially orthogonal to the bottom, the first and second lateral walls and the bottom of the microrecess joining at a same point and forming a trihedron.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: December 5, 2017
    Assignee: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventor: Christophe Martinez
  • Patent number: 9784431
    Abstract: A light-emitting device including at least a metal layer able to be heated and to propagate surface waves consecutive to the heating of the metal layer, with the metal layer being structured such that it comprises several diffraction patterns able to carry out a diffraction of the surface waves to free-space propagation modes, wherein a synthetic hologram is encoded such that a phase image of a pixel of the hologram is encoded by an offset in the position of one of the diffraction patterns, and a heater of the metal layer.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: October 10, 2017
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventor: Christophe Martinez