Patents by Inventor Ludovic Poupinet
Ludovic Poupinet 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: 10297641Abstract: A memory device, containing a first electrode, a second electrode and an oxide layer arranged between the first electrode and the second electrode, is produced. The oxide layer has a first zone and a second zone, with the first zone surrounding or being located on either side of the second zone, with the minimum distance d2 separating the two electrodes on the second zone of the oxide layer being less than the minimum distance d1 separating the two electrodes on the first zone of the oxide layer.Type: GrantFiled: July 29, 2016Date of Patent: May 21, 2019Assignee: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Christelle Charpin-Nicolle, Eric Jalaguier, Luca Perniola, Ludovic Poupinet, Boubacar Traore
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Publication number: 20170033160Abstract: A memory device, containing a first electrode, a second electrode and an oxide layer arranged between the first electrode and the second electrode, is produced. The oxide layer has a first zone and a second zone, with the first zone surrounding or being located on either side of the second zone, with the minimum distance d2 separating the two electrodes on the second zone of the oxide layer being less than the minimum distance d1 separating the two electrodes on the first zone of the oxide layer.Type: ApplicationFiled: July 29, 2016Publication date: February 2, 2017Applicant: Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Christelle CHARPIN-NICOLLE, Eric JALAGUIER, Luca PERNIOLA, Ludovic POUPINET, Boubacar TRAORE
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Patent number: 8614698Abstract: An electrode of a light-emitting device of the OLED type adapted for forming with a second electrode, an optical cavity, including at least one layer based on a material of refraction index n1 including a structured face comprising a plurality of recesses filled with a material of refractive index n2 different from n1.Type: GrantFiled: November 20, 2007Date of Patent: December 24, 2013Assignee: Commissariat a l'Energie AtomiqueInventors: Yohan Desieres, Pierre Gidon, Ludovic Poupinet, Bruno Mourey
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Patent number: 8030604Abstract: A near-field detection optical component operating in transmission. It includes at least one portion (11b) forming at least one grating (11) of diffraction microstructures (11a) succeeding one another over several periods (p), this grating (11) being capable of converting evanescent waves (16), which are established between the component and an object (12) located in the near field, when it reflects or emits radiation having a wavelength, into propagating waves (16?) by a diffraction effect during transmission through the portion (11b) forming the grating (11) of diffraction microstructures (11a). The period (p) of the grating (11) being of the order of magnitude of the wavelength of the radiation.Type: GrantFiled: June 8, 2007Date of Patent: October 4, 2011Assignee: Commissariat a l'Energie AtomiqueInventors: Salim Mimouni, Ludovic Poupinet
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Patent number: 7957244Abstract: The invention relates to the reading of digital optical recordings at very high density (CD, DVD, etc.). Reading is done by a PRML (“Partial Response Maximum Likelihood”) technique which uses a model of analog response to the recording of an isolated information bit. Customarily, the response model is represented by four or five signal samples having standardized levels 1 or 2. To take account of particular phenomena of super-resolution reading, the invention proposes the use of a model having 6 to 10 samples that can take 4 or 5 standardized levels. This model can result from the superposition of two simpler models having only two possible levels of samples taken from 1, 2 and 3.Type: GrantFiled: April 25, 2008Date of Patent: June 7, 2011Assignee: Commissariat a l'Energie AtomiqueInventors: Alain Fargeix, Olivier Lemonnier, Ludovic Poupinet
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Patent number: 7940477Abstract: The invention generally pertains to the field of solid immersion lenses for optical applications in high resolution microscopy. The lens of the invention includes a spherical sector limited by a planar surface and an object having nanometric dimensions arranged on the planar surface at the focus of said solid immersion lens. A light-opaque layer having a central opening with nanometric dimensions can be provided on the planar surface, said opening being centred on the focus of the solid immersion lens. The nano-object can be a tube or a thread having a cylindrical shape. The lens of the invention can be made using lithography techniques.Type: GrantFiled: September 16, 2008Date of Patent: May 10, 2011Assignee: Commissariat A l'Energie Atomique Et Aux Energies AlternativesInventors: Mickaël Brun, Salim Mimouni, Sergio Nicoletti, Ludovic Poupinet, Hubert Moriceau
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Patent number: 7924690Abstract: The invention relates to the field of optical information recording. In order to prevent abusive or fraudulent use of storage media, the invention provides a process for intentional degradation of information by application of a laser power below the normal power for reading information recorded in super-resolution on the media. This process relies on the surprising observation that a laser power below the super-resolution read power produces an irreversible degradation of the information recorded. This observation has been made with regard to media composed of a three-layer structure comprising an InSb or GaSb layer between two ZnS/SiO2 layers. Application for protecting sensitive data.Type: GrantFiled: April 1, 2008Date of Patent: April 12, 2011Assignee: Commissariat A l'Energie AtomiqueInventors: Bérangère Hyot, Bernard Andre, Pierre Desre, Ludovic Poupinet, Patrick Chaton
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Patent number: 7903536Abstract: An irreversible optical recording medium comprises at least an active layer presenting a rear face and a front face designed to receive at least an optical writing radiation. The optical writing radiation enables gas bubbles forming write marks to be formed locally in said active layer by means of a layer forming a gas source arranged on the rear face of the active layer. The layer forming the gas source moreover has a thickness less than or equal to 100 nm so as to limit the height of the bubbles formed in the active layer and therefore to improve tracking when read operations are performed. The layer forming the gas source is preferably made of carbon-doped hydrogenated amorphous silicon oxide.Type: GrantFiled: March 23, 2006Date of Patent: March 8, 2011Assignees: Commissariat a l'Energie Atomique, MPO InternationalInventors: Ludovic Poupinet, Jerome Hazart, Berangere Hyot, Marc Plissonnier
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Publication number: 20100291338Abstract: The invention relates to optical information storage. According to the invention, what is provided is a high-resolution optical information storage structure, comprising a substrate (10) provided with physical marks, the geometric configuration of which defines the information recorded, a superposition of three layers over the top of the marks on the substrate, and a transparent protective layer over the top of this superposition, the superposition comprising an indium antimonide or gallium antimonide layer (14) inserted between two ZnS/SiO2 dielectric layers (12, 16). The information may be prerecorded in the substrate with a resolution (in terms of size and space) better than the theoretical read resolution permitted by the wavelength of the read laser. The non-linearity in behaviour of the three-layer superposition allows the information to be read if the laser power is well chosen.Type: ApplicationFiled: February 5, 2008Publication date: November 18, 2010Applicant: Commissariat A L'Energie AtomiqueInventors: Bérangère Hyot, Ludovic Poupinet, Bernard Andre, Patrick Chaton
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Patent number: 7776419Abstract: An optical data storage medium comprises at least one active layer of inorganic material, that is able to undergo local deformations during write operations. The active layer presents a front face which is designed to receive an optical radiation at least during read operations. The support also comprises a thin tin and tellurium based alloy layer forming a semi-reflective layer disposed on the front face of the active layer.Type: GrantFiled: February 24, 2006Date of Patent: August 17, 2010Assignees: Commissariat a l'Energie Atomique, MPO InternationalInventors: Ludovic Poupinet, Berangere Hyot, Pierre Desre
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Publication number: 20100200770Abstract: The invention generally pertains to the field of solid immersion lenses for optical applications in high resolution microscopy. The lens of the invention includes a spherical sector limited by a planar surface and an object having nanometric dimensions arranged on the planar surface at the focus of said solid immersion lens. A light-opaque layer having a central opening with nanometric dimensions can be provided on the planar surface, said opening being centred on the focus of the solid immersion lens. The nano-object can be a tube or a thread having a cylindrical shape. The lens of the invention can be made using lithography techniques.Type: ApplicationFiled: September 16, 2008Publication date: August 12, 2010Applicant: Commissariat A L' Energie Atomique Et Aux Energies AlternativeInventors: Mickaël Brun, Salim Mimouni, Sergio Nicoletti, Ludovic Poupinet, Hubert Moriceau
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Publication number: 20100141612Abstract: An electrode of a light-emitting device of the OLED type adapted for forming with a second electrode, an optical cavity, including at least one layer based on a material of refraction index n1 including a structured face comprising a plurality of recesses filled with a material of refractive index n2 different from n1.Type: ApplicationFiled: November 20, 2007Publication date: June 10, 2010Applicant: COMISSARIAT A L'ENERGIE ATOMIQUEInventors: Yohan Desieres, Pierre Gidon, Ludovic Poupinet, Bruno Mourey
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Publication number: 20100092717Abstract: The optical recording medium comprises an active layer made of inorganic material, presenting a front face for receiving an optical radiation during writing operations, and a rear face. The inorganic material is a tellurium and zinc alloy comprising an atomic percentage of between 60% and 70% of zinc and between 30% and 40% of tellurium. The alloy comprises preferably 65% of zinc and 35% of tellurium. The medium may comprise a semi-reflecting layer arranged on the front face of the active layer and/or an additional metal layer arranged on the rear face and/or a protective layer of polymer material on the rear face. Thus, writing powers, a mark resolution and a storage density corresponding to DVD format specifications may be achieved.Type: ApplicationFiled: December 16, 2009Publication date: April 15, 2010Applicant: MPO INTERNATIONALInventors: Ludovic Poupinet, Bérangère Hyot, Marie-Françoise Armand
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Patent number: 7582346Abstract: The optical recording medium comprises an active layer of inorganic material, able to undergo deformations due to the effect of an optical radiation, presenting a front face designed to receive an optical radiation during writing operations and a rear face. An additional metal layer is arranged on the rear face of the active layer. The additional metal layer preferably has a thickness comprised between 9 nanometers and 12 nanometers. The inorganic material of the active layer can be a tellurium and zinc alloy comprising an atomic percentage of between 60% and 70% of zinc and between 30% and 40% of tellurium, and preferably 65% of zinc and 35% of tellurium. The medium can comprise a semi-reflecting layer arranged on the front face of the active layer and/or a protective layer made of polymer material on the rear face.Type: GrantFiled: December 2, 2003Date of Patent: September 1, 2009Assignees: Commissariat a l'Energie Atomique, MPO InternationalInventors: Ludovic Poupinet, Bérangère Hyot, Marie-Françoise Armand
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Publication number: 20090205090Abstract: This is a near-field detection optical component operating in transmission. It includes at least one portion (11b) forming at least one grating (11) of diffraction microstructures (11a) succeeding one another over several periods (p), this grating (11) being capable of converting evanescent waves (16), which are established between the component and an object (12) located in the near field, when it reflects or emits radiation having a wavelength, into propagating waves (16?) by a diffraction effect during transmission through the portion (11b) forming the grating (11) of diffraction microstructures (11a). The period (p) of the grating (11) being of the order of magnitude of the wavelength of the radiation. Application to near-field detection devices.Type: ApplicationFiled: June 8, 2007Publication date: August 13, 2009Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Salim Mimouni, Ludovic Poupinet
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Publication number: 20090181205Abstract: An optical data storage medium comprises at least one active layer of inorganic material, that is able to undergo local deformations during write operations. The active layer presents a front face which is designed to receive an optical radiation at least during read operations. The support also comprises a thin tin and tellurium based alloy layer forming a semi-reflective layer disposed on the front face of the active layer.Type: ApplicationFiled: February 24, 2006Publication date: July 16, 2009Applicants: Commissariat A L'Energie Atomique, MPO InternationalInventors: Ludovic Poupinet, Berangere Hyot, Pierre Desre
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Publication number: 20080267048Abstract: An irreversible optical recording medium comprises at least an active layer presenting a rear face and a front face designed to receive at least an optical writing radiation. The optical writing radiation enables gas bubbles forming write marks to be formed locally in said active layer by means of a layer forming a gas source arranged on the rear face of the active layer. The layer forming the gas source moreover has a thickness less than or equal to 100 nm so as to limit the height of the bubbles formed in the active layer and therefore to improve tracking when read operations are performed. The layer forming the gas source is preferably made of carbon-doped hydrogenated amorphous silicon oxide.Type: ApplicationFiled: March 23, 2006Publication date: October 30, 2008Applicants: Commissariat a L'Energie Atomique, MPO InternationalInventors: Ludovic Poupinet, Jerome Hazart, Berangere Hyot, Marc Plissonnier
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Publication number: 20080267037Abstract: The invention relates to the reading of digital optical recordings at very high density (CD, DVD, etc.). Reading is done by a PRML (“Partial Response Maximum Likelihood”) technique which uses a model of analog response to the recording of an isolated information bit. Customarily, the response model is represented by four or five signal samples having standardized levels 1 or 2. To take account of particular phenomena of super-resolution reading, the invention proposes the use of a model having 6 to 10 samples that can take 4 or 5 standardized levels. This model can result from the superposition of two simpler models having only two possible levels of samples taken from 1, 2 and 3.Type: ApplicationFiled: April 25, 2008Publication date: October 30, 2008Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Alain Fargeix, Olivier Lemonnier, Ludovic Poupinet
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Publication number: 20080259778Abstract: The invention relates to the field of optical information recording. In order to prevent abusive or fraudulent use of storage media, the invention provides a process for intentional degradation of information by application of a laser power below the normal power for reading information recorded in super-resolution on the media. This process relies on the surprising observation that a laser power below the super-resolution read power produces an irreversible degradation of the information recorded. This observation has been made with regard to media composed of a three-layer structure comprising an InSb or GaSb layer between two ZnS/SiO2 layers. Application for protecting sensitive data.Type: ApplicationFiled: April 1, 2008Publication date: October 23, 2008Applicant: Commissariat A L'Energie AtomiqueInventors: Berangere HYOT, Bernard ANDRE, Pierre DESRE, Ludovic POUPINET, Patrick CHATON
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Publication number: 20080260983Abstract: An irreversible optical recording medium comprises at least a substrate whereon is arranged at least a photosensitive layer comprising a structured front face destined to receive an optical radiation during data recording and/or reading operations. The medium also comprises a track comprising raised zones, having: a height comprised between about 25 nm and about 35 nm for widths of raised zones comprised between 250 nm and 370 nm, and a height comprised between a minimum value varying substantially linearly, in decreasing manner, from 25 nm to 32 nm, and a maximum value substantially of 35 nm, for widths of raised zones comprised between 200 nm and 250 nm.Type: ApplicationFiled: January 25, 2006Publication date: October 23, 2008Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE, MPO INTERNATIONALInventors: Ludovic Poupinet, Fabien Laulagnet