Patents by Inventor Riad Haïdar
Riad Haïdar 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).
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Publication number: 20240068937Abstract: A detector (100) for surface-enhanced infrared absorption spectroscopy comprises resonators which are distributed over a surface (S) of a support (1), said surface being intended to receive a sample (101) to be tested. The resonators are able to provoke a spectral reflectance of at least 40% for electromagnetic radiation that is incident on the surface of the support, in the absence of a sample, and when the radiation is at the resonance wavelength value of the resonators. The detector has high sensitivity to small amounts of a target molecule.Type: ApplicationFiled: December 9, 2021Publication date: February 29, 2024Inventors: Alice FABAS, Patrick BOUCHON, Hasnaa EL OUAZZANI, Riad HAÏDAR, Jean-Paul HUGONIN, Jean-Jacques GREFFET
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Patent number: 11485200Abstract: A filtering vision element forming a windshield or rearview mirror of a road vehicle includes a lower region and an upper region. The filtering vision element is designed so that a difference in attenuation between two linear polarizations of an incident radiation has values that are of opposite signs in the lower and upper regions. The two linear polarizations may respectively be horizontal and contained in a vertical plane. Blinding of the driver caused by a spot of reflected light produced on a road by headlights of an external vehicle may thus be decreased or prevented.Type: GrantFiled: September 20, 2017Date of Patent: November 1, 2022Assignee: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALESInventors: Riad Haïdar, Sylvain Maine, Gregory Vincent, Jérôme Primot, Hervé Lachaud
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Patent number: 11326947Abstract: Disclosed is a spectral filter including a plurality of Fabry-Perot structures which are collectively carried by a support, and coupled together so as to produce a coupling resonance that is distinct from individual resonances of each of the Fabry-Perot structures. The coupling resonance may have a higher quality factor than the quality factors of the individual resonances. Each Fabry-Perot structure includes two portions of metal surfaces which are parallel to a face of the substrate, so that electromagnetic radiation wave components propagating within each Fabry-Perot structure, and which contribute to the coupling resonance, have a direction of propagation that is parallel to the face of the substrate.Type: GrantFiled: June 25, 2019Date of Patent: May 10, 2022Assignee: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALESInventors: Baptiste Fix, Julien Jaeck, Patrick Bouchon, Riad Haidar
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Publication number: 20210364354Abstract: Disclosed is a spectral filter including a plurality of Fabry-Perot structures which are collectively carried by a support, and coupled together so as to produce a coupling resonance that is distinct from individual resonances of each of the Fabry-Perot structures. The coupling resonance may have a higher quality factor than the quality factors of the individual resonances. Each Fabry-Perot structure includes two portions of metal surfaces which are parallel to a face of the substrate, so that electromagnetic radiation wave components propagating within each Fabry-Perot structure, and which contribute to the coupling resonance, have a direction of propagation that is parallel to the face of the substrate.Type: ApplicationFiled: June 25, 2019Publication date: November 25, 2021Inventors: Baptiste FIX, Julien JAECK, Patrick BOUCHON, Riad HAIDAR
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Patent number: 11175181Abstract: A device for imaging and delivering spectroscopic information comprises an objective (1), an image sensor (2) and an optical component (3) having a spectral differentiation function. The optical component having a spectral differentiation function modifies the image of a point in different ways for at least two colours, so that a form of the image of the point delivers spectroscopic information that appears directly in the image as captured by the image sensor. Such device may be used in a detection and/or surveillance system, which then possesses a lower probability of false alarm value.Type: GrantFiled: February 22, 2019Date of Patent: November 16, 2021Assignee: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALESInventors: Jérôme Primot, Sabine Suffis, Sophie Thetas, Cindy Bellanger, Alain Kattnig, Riad Haïdar, Julien Jaeck, Patrick Bouchon, Micke Boher
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Patent number: 11171174Abstract: A device for multispectral imaging in the infrared, suitable for detecting at at least one first and one second detection wavelength is provided. It comprises a detection matrix array comprising a set of elementary detectors of preset dimensions forming an image field of given dimensions; and an image-forming optic having a given aperture number (N) and a given focal length (F), which aperture number and focal length are suitable for forming, at any point of the image field, an elementary focal spot covering a set of at least two juxtaposed elementary detectors.Type: GrantFiled: April 6, 2018Date of Patent: November 9, 2021Assignees: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)Inventors: Antoine Bierret, Grégory Vincent, Riad Haidar, Fabrice Pardo, Jean-Luc Pelouard
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Publication number: 20210300160Abstract: A filtering vision element forming a windshield or rearview mirror of a road vehicle includes a lower region and an upper region. The filtering vision element is designed so that a difference in attenuation between two linear polarizations of an incident radiation has values that are of opposite signs in the lower and upper regions. The two linear polarizations may respectively be horizontal and contained in a vertical plane. Blinding of the driver caused by a spot of reflected light produced on a road by headlights of an external vehicle may thus be decreased or prevented.Type: ApplicationFiled: September 20, 2017Publication date: September 30, 2021Inventors: Riad HAÏDAR, Sylvain MAINE, Gregory VINCENT, Jérôme PRIMOT, Hervé LACHAUD
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Publication number: 20210010858Abstract: A device for imaging and delivering spectroscopic information comprises an objective (1), an image sensor (2) and an optical component (3) having a spectral differentiation function. The optical component having a spectral differentiation function modifies the image of a point in different ways for at least two colours, so that a form of the image of the point delivers spectroscopic information that appears directly in the image as captured by the image sensor. Such device may be used in a detection and/or surveillance system, which then possesses a lower probability of false alarm value.Type: ApplicationFiled: February 22, 2019Publication date: January 14, 2021Inventors: Jérôme PRIMOT, Sabine SUFFIS, Sophie THETAS, Cindy BELLANGER, Alain KATTNIG, Riad HAÏDAR, Julien JAECK, Patrick BOUCHON, Micke BOHER
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Patent number: 10776679Abstract: According to a first aspect, the present description relates to a device for optically encoding an image, which device is intended to be observed in at least one first spectral band of observation. The encoding device comprises a supporting structure and a set of metal-dielectric-metal plasmonic antennae formed on said supporting structure, each plasmonic antenna being resonant at at least one wavelength comprised in said first spectral band of observation, the plasmonic antennae being arranged spatially on the supporting structure in such a way as to form at least one first spatial encoding of said image in said first spectral band of observation.Type: GrantFiled: July 5, 2016Date of Patent: September 15, 2020Assignee: Office National d'Etudes et de Recherches Aérospatiales-ONERAInventors: Patrick Bouchon, Julien Jaeck, Mathilde Makhsiyan, Riad Haïdar
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Patent number: 10749054Abstract: A photodetector includes a Helmholtz resonator and a photosensitive structure that is placed in an electric-field-concentrating interval forming part of the Helmholtz resonator. Such a photodetector is in particular suitable for imaging applications. The wavelength of the radiation to be detected is determined by dimensions of the Helmholtz resonator, within a detection spectral interval of the photosensitive structure.Type: GrantFiled: October 12, 2018Date of Patent: August 18, 2020Assignees: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)Inventors: Emilie Steveler, Paul Chevalier, Jean-Luc Pelouard, Fabrice Pardo, Patrick Bouchon, Riad Haidar, Michaël Verdun
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Patent number: 10612979Abstract: A spectral conversion element for electromagnetic radiation includes Terahertz antennas and infrared antennas which are distributed in pixel zones. The Terahertz antennas and the infrared antennas which are in one same pixel zone are thermally coupled, and those which are in different pixel zones are uncoupled. Such an element enables the capture of images which are formed with Terahertz radiation, by using an infrared image detector.Type: GrantFiled: June 6, 2018Date of Patent: April 7, 2020Assignee: OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIALESInventors: Patrick Bouchon, Riad Haidar, Mathilde Makhsiyan
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Publication number: 20200082234Abstract: According to a first aspect, the present description relates to a device for optically encoding an image, which device is intended to be observed in at least one first spectral band of observation. The encoding device comprises a supporting structure and a set of metal-dielectric-metal plasmonic antennae formed on said supporting structure, each plasmonic antenna being resonant at at least one wavelength comprised in said first spectral band of observation, the plasmonic antennae being arranged spatially on the supporting structure in such a way as to form at least one first spatial encoding of said image in said first spectral band of observation.Type: ApplicationFiled: July 5, 2016Publication date: March 12, 2020Applicants: Office National d'Etudes et de Recherches Aérospatiales, Office National d'Etudes et de Recherches AérospatialesInventors: Patrick Bouchon, Julien Jaeck, Mathilde Makhsiyan, Riad Haïdar
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Publication number: 20200066782Abstract: A device for multispectral imaging in the infrared, suitable for detecting at at least one first and one second detection wavelength is provided. It comprises a detection matrix array comprising a set of elementary detectors of preset dimensions forming an image field of given dimensions; and an image-forming optic having a given aperture number (N) and a given focal length (F), which aperture number and focal length are suitable for forming, at any point of the image field, an elementary focal spot covering a set of at least two juxtaposed elementary detectors.Type: ApplicationFiled: April 6, 2018Publication date: February 27, 2020Inventors: Antoine BIERRET, Grégory VINCENT, Riad HAIDAR, Fabrice PARDO, Jean-Luc PELOUARD
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Publication number: 20190115483Abstract: A photodetector includes a Helmholtz resonator and a photosensitive structure that is placed in an electric-field-concentrating interval forming part of the Helmholtz resonator. Such a photodetector is in particular suitable for imaging applications. The wavelength of the radiation to be detected is determined by dimensions of the Helmholtz resonator, within a detection spectral interval of the photosensitive structure.Type: ApplicationFiled: October 12, 2018Publication date: April 18, 2019Inventors: Emilie STEVELER, Paul CHEVALIER, Jean-Luc PELOUARD, Fabrice PARDO, Patrick BOUCHON, Riad HAIDAR, Michaël VERDUN
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Publication number: 20180348060Abstract: A spectral conversion element for electromagnetic radiation includes Terahertz antennas and infrared antennas which are distributed in pixel zones. The Terahertz antennas and the infrared antennas which are in one same pixel zone are thermally coupled, and those which are in different pixel zones are uncoupled. Such an element enables the capture of images which are formed with Terahertz radiation, by using an infrared image detector.Type: ApplicationFiled: June 6, 2018Publication date: December 6, 2018Inventors: Patrick BOUCHON, Riad HAIDAR, Mathilde MAKHSIYAN
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Patent number: 9810822Abstract: According to one aspect, the invention relates to an angular optical filtering element (Ei) optimized for angular filtering about a given operating angle of incidence (?i, 1) in a given spectral band. The angular filtering element (Ei) comprises a first nanostructured, band-pass, spectral filter (11i, 301) and a second nanostructured, band-pass, spectral filter (12i, 302). Each of the first and second spectral filters comprises, respectively, in said spectral band, a first and a second central filtering wavelength that respectively has a first and second angular dispersion curve defined depending on the angle of incidence (?inc) on the optical filtering element (Ei), the curves of angular dispersion being secant about the operating angle of incidence (?i, 1) of the optical filtering element. The invention applies to the production of a selective angular filtering device and to a multidirectional optical detection system.Type: GrantFiled: June 17, 2014Date of Patent: November 7, 2017Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, Office National d'Etudes et de Recherches Aérospatiales—ONERAInventors: Emilie Sakat, Riad Haïdar, Jean-Luc Pelouard, Patrick Bouchon, Grégory Vincent
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Patent number: 9755090Abstract: According to one aspect, the invention relates to an element for quantum photodetection of an incident radiation in a spectral band centered around a central wavelength ?0, having a front surface intended for receiving said radiation, and including: a stack of layers of semiconductor material forming a PN or PIN junction and including at least one layer made of an absorbent semiconductor material having a cut-off wavelength ?0>?0, the stack of layers of semiconductor material forming a resonant optical cavity; and a structure for coupling the incident radiation with the optical cavity such as to form a resonance at the central wavelength ?0 allowing the absorption of more than 80% in the layer of absorbent semiconductor material at said central wavelength, and an absence of resonance at the radiative wavelength ?rad, wherein the radiative wavelength ?rad is the wavelength for which, at operating temperature, the radiative recombination rate is the highest.Type: GrantFiled: December 17, 2014Date of Patent: September 5, 2017Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, Office National d'Etudes et de Recherches Aérospatials—ONERAInventors: Benjamin Portier, Michaël Verdun, Riad Haidar, Jean-Luc Pelouard, Fabrice Pardo
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Patent number: 9588339Abstract: According to one aspect, the invention relates to a device (20, 50) for controlling the phase of an incident optical wavefront of wavelength comprised in a spectral band of given use, comprising a substrate (21) that is at least partially transparent in said spectral band and a set of strips (22i, 23i, 24i) arranged substantially perpendicularly to the surface of the substrate, characterized in that: said set of strips comprises an alternation of juxtaposed strips respectively made of a metal (22i), of a first dielectric (23i) and of at least one second dielectric (24i) different from the first dielectric, such as to form juxtaposed metal/multi dielectric/metal (MmultiDM) structures (Si) of subwavelength widths (wi), each structure forming a cavity having one or more propagation modes—the respective thicknesses of the strips made of the first dielectric and of the second dielectric(s) are adjusted in each of said MmultiDM structures to induce a local shift (??i) in the phase of the wavefront, the local phaseType: GrantFiled: November 29, 2013Date of Patent: March 7, 2017Assignees: Office National d'Etudes et de Recherches Aérospatiales—ONERA, Centre Nationale de la Recherche Scientifique—CNRSInventors: Quentin Levesque, Patrick Bouchon, Riad Haidar, Fabrice Pardo
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Publication number: 20160322516Abstract: According to one aspect, the invention relates to an element for quantum photodetection of an incident radiation in a spectral band centred around a central wavelength ?0, having a front surface intended for receiving said radiation, and including: a stack of layers of semiconductor material forming a PN or PIN junction and including at least one layer made of an absorbent semiconductor material having a cut-off wavelength ?0>?0, the stack of layers of semiconductor material forming a resonant optical cavity; and a structure for coupling the incident radiation with the optical cavity such as to form a resonance at the central wavelength ?0 allowing the absorption of more than 80% in the layer of absorbent semiconductor material at said central wavelength, and an absence of resonance at the radiative wavelength ?rad, wherein the radiative wavelength ?rad is the wavelength for which, at operating temperature, the radiative recombination rate is the highest.Type: ApplicationFiled: December 17, 2014Publication date: November 3, 2016Applicants: Centre National de la Recherche Scientifique - CNR S, Office National d'Etudes et de Recherches Aérospa tiales - ONERAInventors: Benjamin Portier, Michaël Verdun, Riad Haidar, Jean-Luc Pelouard, Fabrice Pardo
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Patent number: 9417134Abstract: According to one aspect, the invention relates to a microbolometer array for thermal detection of light radiation in a given spectral band, comprising a supporting substrate and an array of microbolometers (300) of given dimensions, arranged in an array. Each of said microbolometers comprises a membrane (301) suspended above said supporting substrate, said membrane consisting of an element (305) for absorbing the incident radiation and a thermometric element (304) in thermal contact with the absorber, electrically insulated from said absorber element. The absorber element comprises at least one first metal/insulator/metal (MIM) structure comprising a multilayer of three superposed films of submicron-order thickness i.e. a first metallic film (311), a dielectric film (310), and a second metallic film (309), said MIM structure being able to have a resonant absorption of said incident radiation at at least one wavelength in said spectral band.Type: GrantFiled: July 13, 2012Date of Patent: August 16, 2016Assignees: Centre Nationale de la Recherche Scientifique—CNRS, Office Nathional d'Etudes et de Recherches Aerospatiales—ONERA—Chemie de la Huniere, Commissariat à l'énergie atomique et aux énergies alternatives—CEAInventors: Charlie Koechlin, Patrick Bouchon, Riad Haidar, Jean-Luc Pelouard, Jean-Jacques Yon, Joël Deschamps, Fabrice Pardo, Stéphane Collin