Patents by Inventor Sophie Morales
Sophie Morales 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: 10690501Abstract: A device for measuring rotation including an NMR gyroscope having a sensing axis, a computer, a generating member configured to generate a magnetic field directed along the sensing axis, and a MEMS gyroscope rigidly connected to the NMR gyroscope, the MEMS gyroscope having a sensing axis aligned with the sensing axis of the NMR gyroscope, the MEMS gyroscope being suitable for delivering a MEMS signal representing a rotation about the sensing axis, the computer being configured to calculate, from an NMR signal output by the NMR gyroscope, information relating to a rotation about the sensing axis, and to analyse the MEMS signal over time in order to determine a current cut-off frequency, the computer also being configured to control the generating member in order to generate, over time, a magnetic field of which the amplitude is a function of the current cut-off frequency.Type: GrantFiled: March 28, 2017Date of Patent: June 23, 2020Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, SAFRANInventors: Augustin Palacios Laloy, Etienne Brunstein, Marc Gramlich, Sophie Morales
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Patent number: 10401177Abstract: The invention relates to a navigational aid method for an inertial navigation system including at least one inertial sensor (4) having a sensitive axis (X-X), each inertial sensor (4) comprising an ASG gyroscope (8) able to deliver an ASG signal representative of a rotation about the corresponding sensitive axis (X-X), and a MEMS gyroscope (10) able to deliver a MEMS signal representative of a rotation about the corresponding sensitive axis (X-X), the method including the steps of: between a first date and a subsequent third date, calculating a path from the MEMS signals; from the third date, calculating the path from the ASG signals; estimating a bias vector introduced by the MEMS gyroscopes (10), from the MEMS signals and ASG signals; at a fourth date subsequent to the third date, resetting the path.Type: GrantFiled: December 13, 2017Date of Patent: September 3, 2019Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, SAFRANInventors: Sophie Morales, Augustin Palacios Laloy, Jean-Michel Leger, Georges Remillieux, Marc Gramlich, Etienne Brunstein
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Patent number: 10371764Abstract: An optical pumping and isotropic measurement magnetometer. The magnetometer is all-optical in the sense that resonance between Zeeman sub-levels is induced by modulating the intensity or the frequency of the pump beam. Resonance is detected either using the pump beam itself or an unmodulated probe beam. The pump beam is linearly polarised and its polarisation direction is kept constant relative to the direction of the magnetic field to be measured, so that a measurement independent of the orientation of the field can be made.Type: GrantFiled: July 7, 2016Date of Patent: August 6, 2019Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Sophie Morales, Mathieu Baicry, Francois Bertrand, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
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Publication number: 20190107395Abstract: A device for measuring rotation including an NMR gyroscope having a sensing axis, a computer, a generating member configured to generate a magnetic field directed along the sensing axis, and a MEMS gyroscope rigidly connected to the NMR gyroscope, the MEMS gyroscope having a sensing axis aligned with the sensing axis of the NMR gyroscope, the MEMS gyroscope being suitable for delivering a MEMS signal representing a rotation about the sensing axis, the computer being configured to calculate, from an NMR signal output by the NMR gyroscope, information relating to a rotation about the sensing axis, and to analyse the MEMS signal over time in order to determine a current cut-off frequency, the computer also being configured to control the generating member in order to generate, over time, a magnetic field of which the amplitude is a function of the current cut-off frequency.Type: ApplicationFiled: March 28, 2017Publication date: April 11, 2019Inventors: Augustin Palacios Laloy, Etienne Brunstein, Marc Gramlich, Sophie Morales
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Patent number: 10126379Abstract: A magnetometer including a detector configured to measure the amplitude of an output signal at an oscillation frequency to deduce a component of a magnetic field to be measured starting from the value of a resonance gradient, including a main excitation source outputting a measurement signal oscillating at a main oscillation frequency and a secondary excitation source outputting a reference signal with known amplitude oscillating at a secondary oscillation frequency, the detector being configured to measure the output signal amplitude at a harmonic of the secondary oscillation frequency and to deduce said resonance gradient. The invention also applies to a network of magnetometers and a method of measuring a magnetic field without slaving and compensation of fluctuations of the resonance gradient.Type: GrantFiled: September 17, 2015Date of Patent: November 13, 2018Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Matthieu Le Prado, Jean-Michel Leger, Sophie Morales
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Publication number: 20180164102Abstract: The invention relates to a navigational aid method for an inertial navigation system including at least one inertial sensor (4) having a sensitive axis (X-X), each inertial sensor (4) comprising an ASG gyroscope (8) able to deliver an ASG signal representative of a rotation about the corresponding sensitive axis (X-X), and a MEMS gyroscope (10) able to deliver a MEMS signal representative of a rotation about the corresponding sensitive axis (X-X), the method including the steps of: between a first date and a subsequent third date, calculating a path from the MEMS signals; from the third date, calculating the path from the ASG signals; estimating a bias vector introduced by the MEMS gyroscopes (10), from the MEMS signals and ASG signals; at a fourth date subsequent to the third date, resetting the path.Type: ApplicationFiled: December 13, 2017Publication date: June 14, 2018Inventors: Sophie Morales, Augustin Palacios Laloy, Jean-Michel Leger, Georges Remillieux, Marc Gramliche, Etienne Brunstein
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Patent number: 9797966Abstract: The invention relates to a magnetic field measurement device, including a detector (4) configured to measure the amplitude of an output signal at a harmonic of an oscillation frequency of an excitation source, said amplitude being proportional to the magnetic field (B) to be measured, characterised in that it comprises an excitation circuit configured to associate with a principal excitation source (B1cos?t) oscillating at a principal oscillation frequency at least one secondary excitation source (B2cos(?/3t+?2)) oscillating at a secondary oscillation frequency that is a fraction of the principal oscillation frequency, said fraction being odd if said harmonic is odd, and even if said harmonic is even.Type: GrantFiled: July 7, 2014Date of Patent: October 24, 2017Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Matthieu Le Prado, Francois Bertrand, Marie-Constance Corsi, Elisabeth Delevoye, Sophie Morales
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Patent number: 9709642Abstract: A magnetic resonance optical pumping isotropic magnetometer including a laser, a gas filled cell, a HF discharge circuit, RF magnetic field generating coils surrounding the cell, a first frequency regulating mechanism of an RF generator, a second polarization regulating mechanism of the laser beam, and a third regulating mechanism of the direction of the RF magnetic field. The direction of polarization of the laser beam at an inlet of the cell is orthogonally aligned with the magnetic field to be measured by virtue of a liquid crystal polarization rotator. The magnetometer is well-adapted to an integrated arrangement.Type: GrantFiled: December 13, 2012Date of Patent: July 18, 2017Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Sophie Morales, Laurence Clerc, William Fourcault, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
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Publication number: 20170010337Abstract: An optical pumping and isotropic measurement magnetometer. The magnetometer is all-optical in the sense that resonance between Zeeman sub-levels is induced by modulating the intensity or the frequency of the pump beam. Resonance is detected either using the pump beam itself or an unmodulated probe beam. The pump beam is linearly polarised and its polarisation direction is kept constant relative to the direction of the magnetic field to be measured, so that a measurement independent of the orientation of the field can be made.Type: ApplicationFiled: July 7, 2016Publication date: January 12, 2017Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Sophie Morales, Mathieu Baicry, Francois Bertrand, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
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Publication number: 20160157394Abstract: A magnetic shielding including at least one side wall defining a cavity to contain an object to be magnetically isolated. The side wall includes between three and five layers of ferromagnetic metallic material and between three and five layers of polymer material including a ferromagnetic powder. Two adjacent metallic layers are separated by a polymer material layer.Type: ApplicationFiled: November 30, 2015Publication date: June 2, 2016Applicant: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Matthieu LE PRADO, Sophie MORALES, Marie-Constance CORSI, Antonio VIANA
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Publication number: 20160084925Abstract: A magnetometer including a detector configured to measure the amplitude of an output signal at an oscillation frequency to deduce a component of a magnetic field to be measured starting from the value of a resonance gradient, including a main excitation source outputting a measurement signal oscillating at a main oscillation frequency and a secondary excitation source outputting a reference signal with known amplitude oscillating at a secondary oscillation frequency, the detector being configured to measure the output signal amplitude at a harmonic of the secondary oscillation frequency and to deduce said resonance gradient. The invention also applies to a network of magnetometers and a method of measuring a magnetic field without slaving and compensation of fluctuations of the resonance gradient.Type: ApplicationFiled: September 17, 2015Publication date: March 24, 2016Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Matthieu LE PRADO, Jean-Michel LEGER, Sophie MORALES
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Patent number: 9025095Abstract: The invention relates to a polarization rotator with small polarization ellipticity. The rotator includes a first optical unit (401) and a second optical unit (402) on a common optical axis. The first optical unit (401) is formed by a rectilinear polarizer (205) and a first quarter-wave plate (210), where the polarization direction of the polarizer is a bisector of the neutral axes of the quarter-wave plate. The second optical unit (402) is formed by a variable-delay plate (220) and a second quarter-wave plate (230), where the neutral axes of the second quarter-wave plate are bisectors of the neutral variable-delay plate axes.Type: GrantFiled: December 12, 2013Date of Patent: May 5, 2015Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Umberto Rossini, Maxime Favier, Stephanie Le Calvez, Sophie Morales
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Publication number: 20150008916Abstract: The invention relates to a magnetic field measurement device, including a detector (4) configured to measure the amplitude of an output signal at a harmonic of an oscillation frequency of an excitation source, said amplitude being proportional to the magnetic field (B) to be measured, characterised in that it comprises an excitation circuit configured to associate with a principal excitation source (B1cos?t) oscillating at a principal oscillation frequency at least one secondary excitation source (B2cos(?/3t+?2)) oscillating at a secondary oscillation frequency that is a fraction of the principal oscillation frequency, said fraction being odd if said harmonic is odd, and even if said harmonic is even.Type: ApplicationFiled: July 7, 2014Publication date: January 8, 2015Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALTInventors: Matthieu LE PRADO, Francois BERTRAND, Marie-Constance CORSI, Elisabeth DELEVOYE, Sophie MORALES
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Publication number: 20140368193Abstract: A magnetic resonance optical pumping isotropic magnetometer including a laser, a gas filled cell, a HF discharge circuit, RF magnetic field generating coils surrounding the cell, a first frequency regulating mechanism of an RF generator, a second polarization regulating mechanism of the laser beam, and a third regulating mechanism of the direction of the RF magnetic field. The direction of polarization of the laser beam at an inlet of the cell is orthogonally aligned with the magnetic field to be measured by virtue of a liquid crystal polarization rotator. The magnetometer is well-adapted to an integrated arrangement.Type: ApplicationFiled: December 13, 2012Publication date: December 18, 2014Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALTInventors: Sophie Morales, Laurence Clerc, William Fourcault, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
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Publication number: 20140168550Abstract: The invention relates to a polarisation rotator with small polarisation ellipticity. The rotator includes a first optical unit (401) and a second optical unit (402) on a common optical axis. The first optical unit (401) is formed by a rectilinear polariser (205) and a first quarter-wave plate (210), where the polarisation direction of the polariser is a bisector of the neutral axes of the quarter-wave plate. The second optical unit (402) is formed by a variable-delay plate (220) and a second quarter-wave plate (230), where the neutral axes of the second quarter-wave plate are bisectors of the neutral variable-delay plate axes.Type: ApplicationFiled: December 12, 2013Publication date: June 19, 2014Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE AUX ENE ALTInventors: Umberto Rossini, Maxime Favier, Stephanie Le Calvez, Sophie Morales