Patents by Inventor Philippe Lalanne
Philippe Lalanne 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: 20240085598Abstract: Nanostructured surface coating (1) configured to generate visual appearances in a visible spectrum range, comprising: —a first layer comprising a random distribution of nanoparticles (2); —a substrate (3), on which the first layer is arranged; —the nanoparticles having an optical refraction index npart having a value suitable for each individually diffusing the incident light; —the nanoparticles being arranged so that the mean distance between two adjacent particles d is defined in accordance with the following relationship so as to produce interference between the light diffused by the particles: 2 R?d?max (?/np), where R is the smallest geometric radius of a circle surrounding the particle, ? is the greatest wavelength of the visible spectrum, and np is the optical refractive index of the medium in which the nanoparticles are dispersed.Type: ApplicationFiled: January 24, 2022Publication date: March 14, 2024Inventors: Philippe LALANNE, Kevin VYNCK, Romain PACANOWSKI, Xavier GRANIER
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Patent number: 10483720Abstract: A laser device is provided for generating a helical-shaped optical wave and includes: (i) a gain region located between one first end defined by a first mirror and a second end defined by an exit region, (ii) a second mirror arranged so as to form with the first mirror an optical cavity including the gain region and a gap between the exit region and the second mirror, (iii) apparatus for pumping the gain region so as to generate the optical wave, wherein the laser device further includes at least one apparatus for shaping the light intensity and/or phase profiles of the optical wave and arranged for selecting at least one rotary-symmetrical transverse mode of the optical wave, the rotary-symmetrical transverse mode being chosen between those with a radial index equal to zero and with an azimuthal index being an integer with a module higher or equal to 1.Type: GrantFiled: December 15, 2015Date of Patent: November 19, 2019Assignees: UNIVERSITE DE MONTPELLIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Arnaud Garnache-Creuillot, Mikhael Myara, Isabelle Sagnes, Luc Le Gratiet, Mohammed Sellahi, Mohammed Seghilani, Philippe Lalanne
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Publication number: 20170346257Abstract: A laser device is provided for generating a helical-shaped optical wave and includes: (i) a gain region located between one first end defined by a first mirror and a second end defined by an exit region, (ii) a second mirror arranged so as to form with the first mirror an optical cavity including the gain region and a gap between the exit region and the second mirror, (iii) apparatus for pumping the gain region so as to generate the optical wave, wherein the laser device further includes at least one apparatus for shaping the light intensity and/or phase profiles of the optical wave and arranged for selecting at least one rotary-symmetrical transverse mode of the optical wave, the rotary-symmetrical transverse mode being chosen between those with a radial index equal to zero and with an azimuthal index being an integer with a module higher or equal to 1.Type: ApplicationFiled: December 15, 2015Publication date: November 30, 2017Inventors: Arnaud GARNACHE-CREUILLOT, Mikhael MYARA, Isabelle SAGNES, Luc LE GRATIET, Mohammed SELLAHI, Mohammed SEGHILANI, Philippe LALANNE
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Patent number: 9219180Abstract: The optoelectronic arrangement comprises a semiconductor nanowire intended to participate in the processing, notably in a reception and/or an emission, of a light concerned and a mirror reflecting the light concerned. The semiconductor nanowire comprises a first section and a second section, and the mirror surrounds, at least longitudinally, the first section of the semiconductor nanowire, said second section extending out of the mirror.Type: GrantFiled: May 2, 2014Date of Patent: December 22, 2015Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVE, CNRSInventors: Jean-Michel Gerard, Julien Claudon, Philippe Lalanne
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Publication number: 20140326945Abstract: The optoelectronic arrangement comprises a semiconductor nanowire intended to participate in the processing, notably in a reception and/or an emission, of a light concerned and a mirror reflecting the light concerned. The semiconductor nanowire comprises a first section and a second section, and the mirror surrounds, at least longitudinally, the first section of the semiconductor nanowire, said second section extending out of the mirror.Type: ApplicationFiled: May 2, 2014Publication date: November 6, 2014Applicants: Commissariat a L'energie Atomique et aux Energies, CNRSInventors: Jean-Michel Gerard, Julien Claudon, Philippe Lalanne
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Publication number: 20130092211Abstract: According to one aspect, the invention relates to an asymmetric MIM type absorbent nanometric structure (1, 1?) intended to receive a wide-band incident light wave the absorption of which is to be optimised within a given spectral band, comprising an absorbent dielectric layer (10) in said spectral band, of subwavelength thickness, arranged between a metal array (11) of subwavelength period and a metal reflector (12).Type: ApplicationFiled: April 15, 2011Publication date: April 18, 2013Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE- CNRSInventors: Stéphane Collin, Jean-Luc Pelouard, Fabrice Pardo, Philippe Lalanne, Christophe Sauvan, Anne-Marie Haghiri-Gosnet
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Patent number: 8218239Abstract: The invention relates to a transparent substrate comprising at its surface a grating of lines of at least 200 light-diffusing elements, said elements being separated by domains with a different refractive index from that of the elements, the distance d between centers of gravity of neighboring elements varying in a non-monotonic manner from one edge of the grating to the other, so that for any group of 50 successive elements, the distance d between the centers of gravity of neighboring elements of said group is at least once greater than and at least once less than the mean distance dm of distances d between centers of gravity of neighboring elements of said group, dm lying between 75 nm and 200 ?m. This substrate is transparent in direct vision and redirects the light while diffusing it without iridescence in a daylighting application.Type: GrantFiled: April 16, 2008Date of Patent: July 10, 2012Assignee: Saint-Gobain Glass FranceInventors: Ludivine Menez, Jean-Philippe Mulet, Philippe Lalanne
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Publication number: 20100128349Abstract: The invention relates to a transparent substrate comprising at its surface a grating of lines of at least 200 light-diffusing elements, said elements being separated by domains with a different refractive index from that of the elements, the distance d between centers of gravity of neighboring elements varying in a non-monotonic manner from one edge of the grating to the other, so that for any group of 50 successive elements, the distance d between the centers of gravity of neighboring elements of said group is at least once greater than and at least once less than the mean distance dm of distances d between centers of gravity of neighboring elements of said group, dm lying between 75 nm and 200 ?m. This substrate is transparent in direct vision and redirects the light while diffusing it without iridescence in a daylighting application.Type: ApplicationFiled: April 16, 2008Publication date: May 27, 2010Applicant: Saint-Gobain Glass FranceInventors: Ludivine Menez, Jean-Philippe Mulet, Philippe Lalanne
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Patent number: 7242837Abstract: A photonic crystal guided propagation structure. The structure includes a guide portion Wn, n being a positive real number or zero number, having a first configuration of rows of patterns, and a guide portion Wm, m being a real number, m>n, having a second configuration of rows of patterns, and a transition zone of distance D located between guide portion Wn and guide portion Wm, in which patterns aligned with at least one row of patterns in the first configuration decrease in size over distance D to allow progressive passing from the first configuration of rows of patterns to the second configuration of rows of patterns. The structures can be applied to the area of integrated optics (semiconductor lasers, laser modulators, filters, multiplexors, etc.).Type: GrantFiled: November 21, 2002Date of Patent: July 10, 2007Assignee: Centre National de la Recherche ScientifiqueInventors: Anne Juliette Talneau, Philippe Lalanne
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Publication number: 20070103782Abstract: A binary type diffractive optical element for scalar optics uses a composite artificial material comprising, in a first portion Ma1, microstructures according to a first geometry for which the effective index decreases with the fill factor and, in a second portion Ma2, microstructures according to a second geometry for which the effective index increases with the fill factor. In one example, a composite artificial material is thus formed by hole type microstructures over a first portion, the smallest hole giving the maximum effective index value of said composite artificial material, and pillar type microstructures, the smallest pillar giving the minimum effective index value of said composite artificial material.Type: ApplicationFiled: October 14, 2004Publication date: May 10, 2007Inventors: Mane-Si Lee, Philippe Lalanne, Andrew Wood, Christophe Sauvan
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Publication number: 20050152656Abstract: A photonic crystal guided propagation structure. The structure includes a guide portion Wn, n being a positive real number or zero number, having a first configuration of rows of patterns, and a guide portion Wm, m being a real number, m>n, having a second configuration of rows of patterns, and a transition zone of distance D located between guide portion Wn and guide portion Wm, in which patterns aligned with at least one row of patterns in the first configuration decrease in size over distance D to allow progressive passing from the first configuration of rows of patterns to the second configuration of rows of patterns. The structures can be applied to the area of integrated optics (semiconductor lasers, laser modulators, filters, multiplexors, etc.).Type: ApplicationFiled: November 21, 2002Publication date: July 14, 2005Applicant: Centre National De La Recherche ScientifiqueInventors: Ann Talneau, Philippe Lalanne
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Patent number: 6323362Abstract: A process for the continuous and simultaneous manufacture of at least two different acetates by at least two simultaneous transesterification reactions comprising continuously bringing into contact in the presence of a catalyst in a reaction zone: (i) an acetate of the formula CH3COOR in which R is an alkyl radical, with (ii) at least two alcohols of formulae R1OH and R2OH in which R1 and R2, are different, and are alkyl radicals with a linear or branched chain, or radicals of formula R3(OCH2CR4R5)m— in which R3 is an alkyl radical, R4 and R5, being identical or different, are a hydrogen atom or an alkyl radical, and m is an integer of from 1 to 4 to form a reaction mixture having a homogeneous liquid phase and produce in the reaction zone by at least two simultaneous transesterification reactions of (i) with (ii) at least two acetates of formulae CH3COOR1 and CH3COOR2 and continuously drawing off from the reaction zone the at least two acetates and continuously separating the at least two acetates fromType: GrantFiled: April 24, 2000Date of Patent: November 27, 2001Assignee: BP Chemicals LimitedInventors: Philippe Lalanne-Magne, Bruno Grenouiller, Daniel Brun-Buisson
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Patent number: 5511747Abstract: Arrangement for the thermal protection of an object, particularly a space vehicle, such as a space missile, including a frame structure covered with thermal insulating material, wherein the material is made of an aggregate of carbon or silica short fibers, the fibers being linked together by means of a binder made of the same constituent and possibly of an appropriate resin. The aggregate is in the form of at least one monobloc element, which is accordingly shaped and dimensioned, and adhered onto the frame structure.Type: GrantFiled: November 30, 1994Date of Patent: April 30, 1996Assignee: Aerospatiale Societe Nationale IndustrielleInventors: Pierre Parrot, Philippe Lalanne, Philippe Herman, Jean-Louis Tisne