Patents by Inventor Alain Gliere
Alain Gliere 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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Patent number: 11774347Abstract: A photoacoustic detecting device to be applied, via a contact face, against a medium to be analyzed, is disclosed. The device includes: a hollow cavity that opens onto a contact aperture, the contact aperture being produced in the contact face; a pulsed or amplitude-modulated light source configured to emit, when activated, an incident light beam, in an emission spectral band, through the cavity, to the contact aperture; and an acoustic transducer connected to the cavity and configured to detect a photoacoustic wave extending through the cavity. Under the effect of illuminating the medium by the incident light beam, the acoustic transducer detects an acoustic wave produced by heating the medium. The cavity includes a membrane extending through the cavity, facing the contact face. The membrane is bounded by a lower face and an upper face. The membrane includes through-apertures produced between the lower face and the upper face.Type: GrantFiled: December 23, 2021Date of Patent: October 3, 2023Assignee: Commissariat à l'Energie Atomique et aux Energies AlternativesInventors: Jean-Guillaume Coutard, Alain Gliere, Maryse Fournier
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Patent number: 11674931Abstract: Photoacoustic detecting device (1), intended to be applied, via a contact face (3), against a medium to be analysed, the device comprising: a hollow cavity (20) comprising a first aperture (22) produced in the contact face, the cavity being bounded by a containment shell (21) that extends around the first aperture; a pulsed or amplitude-modulated light source (10) configured to emit, in an emission spectral band (??), an incident light wave (11) through the cavity (20) to the first aperture; an acoustic transducer (28) linked to the cavity and configured to detect a photoacoustic wave (12) extending through the cavity. The photoacoustic detecting device is optimized to increase the amplitude of the photoacoustic wave detected by the acoustic transducer.Type: GrantFiled: March 23, 2021Date of Patent: June 13, 2023Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Jean-Guillaume Coutard, Laurent Duraffourg, Alain Gliere, Alexandre Teulle
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Publication number: 20230037289Abstract: The invention relates to a device and method for detecting an acoustic wave propagating toward a membrane, the membrane carrying a waveguide comprising an optical cavity defining a resonant frequency. Under the effect of a vibration of the membrane, the resonance frequency of the optical cavity varies. The device includes a light source for directing a light wave into the optical cavity, and a servo circuit for servo-controlling the wavelength of the light wave to the resonant wavelength of the optical cavity. Monitoring the variation in the wavelength of the light wave allows an amplitude of the acoustic wave to be estimated.Type: ApplicationFiled: December 24, 2020Publication date: February 9, 2023Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE GRENOBLE ALPES, C.N.R.S., INSTITUT POLYTECHNIQUE DE GRENOBLEInventors: Thomas LAUWERS, Skandar BASROUR, Jean-Guillaume COUTARD, Alain GLIERE, Guillaume LAFFONT
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Publication number: 20220364981Abstract: The invention is a device and method for detecting an analyte in a medium. An exciting light source produces an exciting light wave, which propagates to the medium and heats the latter. The device comprises a transducer for detecting the heating of the medium. According to one embodiment, the transducer is a thermal transducer, configured to detect a variation in the temperature of the medium. According to another embodiment, the transducer is an acoustic transducer, configured to detect a photoacoustic wave propagating from the medium. Whatever the embodiment, the transducer employs a membrane, on which a waveguide is placed. The waveguide comprises a resonant optical cavity. Transduction is achieved by analyzing a variation in a resonant wavelength of the optical cavity.Type: ApplicationFiled: December 24, 2020Publication date: November 17, 2022Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE GRENOBLE ALPES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, INSTITUT POLYTECHNIQUE DE GRENOBLEInventors: Thomas LAUWERS, Skandar BASROUR, Jean-Guillaume COUTARD, Alain GLIERE, Guillaume LAFFONT
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Publication number: 20220205901Abstract: Photoacoustic detecting device (1) intended to be applied, via a contact face (3), against a medium (2) to be analysed, the device comprising: a hollow cavity (20) that opens onto a contact aperture (22), the contact aperture being produced in the contact face; a pulsed or amplitude-modulated light source (10) configured to emit, when it is activated, an incident light beam (11), in an emission spectral band (LA), through the cavity (20), to the contact aperture; an acoustic transducer (28) connected to the cavity, and configured to detect a photoacoustic wave (12) extending through the cavity; such that, under the effect of an illumination of the medium by the incident light beam, the acoustic transducer detects an acoustic wave produced by heating of the medium (2); wherein the cavity comprises a membrane extending through the cavity, facing the contact face; the membrane is bounded by a lower face (23i) and an upper face (23s), the membrane comprising through-apertures (23o) produced between the loweType: ApplicationFiled: December 23, 2021Publication date: June 30, 2022Applicant: Commissariat à l'Energie Atomique et aux Energies AlternativesInventors: Jean-Guillaume COUTARD, Alain GLIERE, Maryse FOURNIER
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Publication number: 20210302387Abstract: Photoacoustic detecting device (1), intended to be applied, via a contact face (3), against a medium to be analysed, the device comprising: a hollow cavity (20) comprising a first aperture (22) produced in the contact face, the cavity being bounded by a containment shell (21) that extends around the first aperture; a pulsed or amplitude-modulated light source (10) configured to emit, in an emission spectral band (??), an incident light wave (11) through the cavity (20) to the first aperture; an acoustic transducer (28) linked to the cavity and configured to detect a photoacoustic wave (12) extending through the cavity. The photoacoustic detecting device is optimized to increase the amplitude of the photoacoustic wave detected by the acoustic transducer.Type: ApplicationFiled: March 23, 2021Publication date: September 30, 2021Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Jean-Guillaume COUTARD, Laurent DURAFFOURG, Alain GLIERE, Alexandre TEULLE
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Patent number: 11119073Abstract: A photoacoustic device for detecting gas includes a photoacoustic cavity having a side wall extending between a first end and a second end and having an outer surface; a light source suitable for emitting a modulated light radiation, and coupled to the first end; a microphone coupled to the side wall, the photoacoustic cavity being made of a material transparent to the light radiation of the light source; a mirror being arranged on at least one portion of the outer surface of the side wall; and the side wall having a thickness chosen as a function of the depth of penetration ? of a thermal wave coming from the mirror into the transparent material.Type: GrantFiled: June 15, 2018Date of Patent: September 14, 2021Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Alain Gliere
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Publication number: 20200240958Abstract: A photoacoustic device for detecting gas includes a photoacoustic cavity having a side wall extending between a first end and a second end and having an outer surface; a light source suitable for emitting a modulated light radiation, and coupled to the first end; a microphone coupled to the side wall, the photoacoustic cavity being made of a material transparent to the light radiation of the light source; a mirror being arranged on at least one portion of the outer surface of the side wall; and the side wall having a thickness chosen as a function of the depth of penetration ? of a thermal wave coming from the mirror into the transparent material.Type: ApplicationFiled: June 15, 2018Publication date: July 30, 2020Inventor: Alain GLIERE
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Patent number: 10641702Abstract: A source (100) that includes a membrane, where the membrane includes: an emissive layer (130) including an emissive surface (131); an adaptor (121a, 121b, 121c, 121d), each adaptor (121a, 121b, 121c, 121d) facing a different section of the emissive section (131), called the emissive section (132a, 132b, 132c, 132d), and with which it forms an emissive assembly (134a, 134b, 134c, 134d) adapted to reduce the spectral extent of infrared radiation emitted by the emissive section; and a plurality of heaters (140a, 140b) for heating the emissive layer (130), the heaters (140a, 140b) being arranged so as to impose different relative temperature variations in different emissive sections (132a, 132b, 132c, 132d).Type: GrantFiled: October 10, 2018Date of Patent: May 5, 2020Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Salim Boutami, Alain Gliere
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Patent number: 10627339Abstract: Modular photoacoustic detection device comprising: a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; acoustic detectors coupled to the chambers; a light source capable of emitting a light beam having at least one wavelength capable of exciting a gas intended to be detected and which can be modulated to a resonance frequency of the photoacoustic cell; a first photonic circuit optically coupling the light source to an input face of a first of the chambers; wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the acoustic cell and emerging on the input face of the first chamber.Type: GrantFiled: March 19, 2019Date of Patent: April 21, 2020Assignee: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Justin Rouxel, Mickael Brun, Alain Gliere, Sergio Nicoletti
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Publication number: 20190212251Abstract: Modular photoacoustic detection device comprising: a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; acoustic detectors coupled to the chambers; a light source capable of emitting a light beam having at least one wavelength capable of exciting a gas intended to be detected and which can be modulated to a resonance frequency of the photoacoustic cell; a first photonic circuit optically coupling the light source to an input face of a first of the chambers; wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the acoustic cell and emerging on the input face of the first chamber.Type: ApplicationFiled: March 19, 2019Publication date: July 11, 2019Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Justin ROUXEL, Mickael BRUN, Alain GLIERE, Sergio NICOLETTI
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Patent number: 10288553Abstract: Modular photoacoustic detection device comprising: a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; acoustic detectors coupled to the chambers; a light source capable of emitting a light beam having at least one wavelength capable of exciting a gas intended to be detected and which can be modulated to a resonance frequency of the photoacoustic cell; a first photonic circuit optically coupling the light source to an input face of a first of the chambers; wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the acoustic cell and emerging on the input face of the first chamber.Type: GrantFiled: June 6, 2016Date of Patent: May 14, 2019Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Justin Rouxel, Mickael Brun, Alain Gliere, Sergio Nicoletti
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Publication number: 20190113446Abstract: The invention relates to a source (100) comprising a membrane, the membrane comprises: an emissive layer (130) comprising an emissive surface (131). adaptation means (121a, 121b, 121c, 121d), each adaptation means (121a, 121b, 121c, 121d) facing a different section of the emissive section (131), called the emissive section (132a, 132b, 132c, 132d), and with which it forms an emissive assembly (134a, 134b, 134c, 134d) adapted to reduce the spectral extent of infrared radiation emitted by the emissive section, a plurality of means (140a, 140b) of heating the emissive layer (130), the heating means (140a, 140b) being arranged so as to impose different relative temperature variations in different emissive sections (132a, 132b, 132c, 132d).Type: ApplicationFiled: October 10, 2018Publication date: April 18, 2019Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Salim Boutami, Alain Gliere
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Publication number: 20170082975Abstract: The invention describes a device allowing the observation of a sample, comprising particles, for example biological particles, by lensless imaging. The sample is disposed against a substrate, the substrate being interposed between a light source and an image sensor. The substrate comprises at least one thin film, extending across a thin film plane, structured so as to form a diffraction grating, designed to confine a part of a light wave emitted by the light source, in a plane parallel to said thin film plane. The device does not comprise magnification optics between the substrate and the image sensor.Type: ApplicationFiled: September 23, 2016Publication date: March 23, 2017Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Alain GLIERE, Salim BOUTAMI, Alexei TCHELNOKOV, Ivan VOZNYUK, Cedric ALLIER
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Publication number: 20160356700Abstract: Modular photoacoustic detection device comprising: a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; acoustic detectors coupled to the chambers; a light source capable of emitting a light beam having at least one wavelength capable of exciting a gas intended to be detected and which can be modulated to a resonance frequency of the photoacoustic cell; a first photonic circuit optically coupling the light source to an input face of a first of the chambers; wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the acoustic cell and emerging on the input face of the first chamber.Type: ApplicationFiled: June 6, 2016Publication date: December 8, 2016Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Justin ROUXEL, Mickael Brun, Alain Gliere, Sergio Nicoletti
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Patent number: 9335259Abstract: Microelectronic photoacoustic detection device comprising: a substrate comprising cavities forming a Helmholtz differential acoustic resonator; acoustic detectors coupled to the chambers of the resonator; a light source; a waveguide comprising a first end coupled to the light source and a second end coupled to a first chamber; in which the second end comprises, at the interface with the first chamber, a width greater than that of the first end and that of the given wavelength, and/or in which the device comprises a diffraction grating arranged in the second end and capable of diffracting a first part of the beam towards a lower reflective layer arranged under the second end and a second part of the beam towards an upper reflective layer arranged at an upper wall of the first chamber.Type: GrantFiled: April 2, 2015Date of Patent: May 10, 2016Assignee: Commissariat a l'energie atomique et aux energies alternativesInventors: Alain Gliere, Salim Boutami, Mickael Brun, Pierre Labeye, Sergio Nicoletti, Justin Rouxel
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Publication number: 20150285737Abstract: Microelectronic photoacoustic detection device comprising: a substrate comprising cavities forming a Helmholtz differential acoustic resonator; acoustic detectors coupled to the chambers of the resonator; a light source; a waveguide comprising a first end coupled to the light source and a second end coupled to a first chamber; in which the second end comprises, at the interface with the first chamber, a width greater than that of the first end and that of the given wavelength, and/or in which the device comprises a diffraction grating arranged in the second end and capable of diffracting a first part of the beam towards a lower reflective layer arranged under the second end and a second part of the beam towards an upper reflective layer arranged at an upper wall of the first chamber.Type: ApplicationFiled: April 2, 2015Publication date: October 8, 2015Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Alain GLIERE, Salim BOUTAMI, Mickael BRUN, Pierre LABEYE, Sergio NICOLETTI, Justin ROUXEL
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Publication number: 20090152474Abstract: A fluorescence imaging device comprises a light source with two wavelengths and variable lighting power. The light source is in the form of a ring and it comprises an alternation of first and second zones respectively able to emit first and second light radiations respectively having distinct first and second wavelengths. Each of the zones further comprises a plurality of elementary light sources controllable independently by selective lighting control means of said elementary sources.Type: ApplicationFiled: July 28, 2006Publication date: June 18, 2009Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Michel Berger, Alain Gliere, Henri Grateau
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Patent number: 6763147Abstract: The invention relates to a process for the formation of an image obtained from an array of detector pixels comprising at least one detector pixel, the image formed constituted by at least one set of P image pixels for each detector pixel, characterized in that it successively comprises: a stage (E2) making it possible to create N elementary pixels from one detector pixel, N being an integer equal to or lower than P and a stage (E3) of the random distribution of events received by a detector pixel in the N elementary pixels corresponding thereto. The invention applies to the field of medical imaging.Type: GrantFiled: April 17, 2000Date of Patent: July 13, 2004Assignee: Commissariat a l'Energie AtomiqueInventors: Anne Koenig, Jean-Marc Dinten, Alain Gliere, Corinne Mestais