Patents by Inventor Stephane Tisserand
Stephane Tisserand 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: 20240102861Abstract: Disclosed is a multispectral imager designed for analyzing a spectral domain of interest, comprising an image sensor (100) formed of an array of macropixels and comprising a first and a second photosensitive pixel (115) respectively dedicated to a first and a second spectral band, and a filtering structure (150) comprising a first and second interference filter (160) which are superimposed respectively on the first and second photosensitive pixel (115) and which are arranged to respectively transmit a first and second electromagnetic radiation belonging respectively to the first and second spectral bands, the multispectral imager in which a wavelength half of that of the second electromagnetic radiation is located in the spectral domain of interest, and a filtering layer (170) is superimposed on the second photosensitive pixel (160) and configured to block the passage of a third electromagnetic radiation of wavelength half that of the second electromagnetic radiation.Type: ApplicationFiled: November 18, 2021Publication date: March 28, 2024Inventors: Stéphane TISSERAND, Laurent ROUX
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Patent number: 11862658Abstract: A hybrid multispectral imaging sensor, characterized in that it comprises a photosensitive backside-illumination detector (DET) that is made on a substrate (100) made of InP, and that is formed of a matrix of pixels (105, P1, P2, P3) that are themselves made in a structure based on InGaAs (103), and a filter module (MF) that is formed of a matrix of elementary filters (?1, ?2, ?3) reproducing said matrix of pixels, and that is mounted into contact with said substrate (100), said substrate (100) made of InP having a thickness less than 50 ?m, and preferably less than 30 ?m.Type: GrantFiled: July 29, 2019Date of Patent: January 2, 2024Assignee: SILIOS TECHNOLOGIESInventors: Stephane Tisserand, Laurent Roux, Marc Hubert, Vincent Sauget
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Patent number: 11199446Abstract: A method of limiting cross-talk in an imaging sensor, the sensor being in the form of a matrix of macropixels defining an image, each macropixel being formed by a matrix of individual pixels, each of which is dedicated to a distinct spectral band, all of the individual pixels dedicated to the same spectral band forming a sub-image, the image being topologically subdivided into at least one parcel, and the method including the following steps: measuring the spectral response of each individual pixel ?1, ?2, ?3, . . . , ?9; calculating the mean spectral response of each sub-image in a parcel; targeting to define the ideal response of each sub-image in the parcel; estimating a series of coefficients for minimizing cross-talk in the parcel; and applying the coefficients to the macropixels in order to correct the sub-images in the parcel. The method is remarkable in that the ideal response is a Gaussian function.Type: GrantFiled: May 30, 2017Date of Patent: December 14, 2021Assignee: SILIOS TECHNOLOGIESInventors: Stéphane Tisserand, Laurent Roux, Marc Hubert, Vincent Sauget, Aurélien Faiola
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Patent number: 11143554Abstract: The invention relates to a multispectral imaging device including: a photosensitive detector DET made up of a matrix of pixels; an array of microlenses ML1, ML2, ML3 reproducing the matrix of pixels; and a filter module MF formed by a matrix of individual filters ?1, ?2, ?3 reproducing the matrix of pixels. The device is remarkable in that the array of microlenses is arranged directly in contact with the detector DET, and the filter module MF is made on a substrate SS that is put into contact with the array of microlenses.Type: GrantFiled: April 27, 2017Date of Patent: October 12, 2021Assignee: SILIOS TECHNOLOGIESInventors: Stephane Tisserand, Laurent Roux, Marc Hubert, Vincent Sauget, Aurelien Faiola
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Publication number: 20210288087Abstract: A hybrid multispectral imaging sensor, characterized in that it comprises a photosensitive backside-illumination detector (DET) that is made on a substrate (100) made of InP, and that is formed of a matrix of pixels (105, P1, P2, P3) that are themselves made in a structure based on InGaAs (103), and a filter module (MF) that is formed of a matrix of elementary filters (?1, ?2, ?3) reproducing said matrix of pixels, and that is mounted into contact with said substrate (100), said substrate (100) made of InP having a thickness less than 50 ?m, and preferably less than 30 ?m.Type: ApplicationFiled: July 29, 2019Publication date: September 16, 2021Applicant: SILIOS TECHNOLOGIESInventors: Stephane TISSERAND, Laurent ROUX, Marc HUBERT, Vincent SAUGET
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Publication number: 20200326235Abstract: A method of limiting cross-talk in an imaging sensor, the sensor being in the form of a matrix of macropixels defining an image, each macropixel being formed by a matrix of individual pixels, each of which is dedicated to a distinct spectral band, all of the individual pixels dedicated to the same spectral band forming a sub-image, the image being topologically subdivided into at least one parcel, and the method including the following steps: measuring the spectral response of each individual pixel ?1, ?2, ?3, . . . , ?9; calculating the mean spectral response of each sub-image in a parcel; targeting to define the ideal response of each sub-image in the parcel; estimating a series of coefficients for minimizing cross-talk in the parcel; and applying the coefficients to the macropixels in order to correct the sub-images in the parcel. The method is remarkable in that the ideal response is a Gaussian function.Type: ApplicationFiled: May 30, 2017Publication date: October 15, 2020Applicant: SILIOS TECHNOLOGIESInventors: Stephane TISSERAND, Laurent ROUX, Marc HUBERT, Vincent SAUGET, Aurelien FAIOLA
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Publication number: 20190145823Abstract: The invention relates to a multispectral imaging device including: a photosensitive detector DET made up of a matrix of pixels; an array of microlenses ML1, ML2, ML3 reproducing the matrix of pixels; and a filter module MF formed by a matrix of individual filters ?1, ?2, ?3 reproducing the matrix of pixels. The device is remarkable in that the array of microlenses is arranged directly in contact with the detector DET, and the filter module MF is made on a substrate SS that is put into contact with the array of microlenses.Type: ApplicationFiled: April 27, 2017Publication date: May 16, 2019Applicant: SILIOS TechnologiesInventors: Stephane TISSERAND, Laurent ROUX, Marc HUBERT, Vincent SAUGET, Aurélien FAIOLA
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Publication number: 20160103019Abstract: A wavelength spectroscopy device includes, on a substrate, a filter cell CF constituted by two mirrors separated by a spacer membrane, the filter cell being made up of a plurality of interference filters. Furthermore, the device also includes an emission cell CE having a plurality of emission sources, each of the sources being associated with one of the interference filters.Type: ApplicationFiled: August 24, 2015Publication date: April 14, 2016Applicant: SILIOS TECHNOLOGIESInventors: Stephane TISSERAND, Marc HUBERT, Laurent ROUX
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Patent number: 8599477Abstract: A system for homogenizing a laser pulse emitted by a laser source in order to illuminate a target homogeneously, the system having, between the laser source and the target: a phase plate constituted by a plurality of subpupils capable of generating a plurality of delayed laser beams towards the target, the path difference ?d between two adjacent delayed laser beams being greater than or equal to the length of the temporal coherence Tc of the laser pulse, and focusing device; wherein the subpupils and the focusing device are adjusted so that the delayed laser beams are superimposed on the target in a homogeneous spot.Type: GrantFiled: October 10, 2008Date of Patent: December 3, 2013Assignees: Ecole Polytechnique, Silios TechnologiesInventors: Federico Canova, Jean-Paul Chambaret, Stéphane Tisserand, Fabien Reversat
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Publication number: 20130194576Abstract: The invention relates to an optical probe including: a first cell C1 including a first emitter module LED1 and a first detector module D1 suitable for producing a first detection signal; a second cell C2 including a second detector module D2 suitable for producing a first monitoring signal for monitoring the first emitter module LED1; and a control circuit for producing a first measurement signal by weighting the first detection signal by means of the first monitoring signal. Furthermore, the second cell C2 has a second emitter module LED2, the second detector module D2 is suitable for producing a second detection signal, and the first detector module D1 is suitable for producing a second monitoring signal for monitoring the second emitter module LED2.Type: ApplicationFiled: July 18, 2011Publication date: August 1, 2013Applicant: SILIOS TECHNOLOGIESInventors: Fabien Reversat, Marc Hubert, Stephane Tisserand, Laurent Roux
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Publication number: 20110292392Abstract: The invention relates to an optical probe for measuring absorption in order to produce an absorption value Am, which probe comprises an analysis cell CA, said analysis cell including an emission module LED, F1, HD and a detection module H1, D1 suitable for producing a detection signal DS, the probe also including a monitoring cell CM suitable for producing a monitoring signal MS. The monitoring cell is arranged on the light path connecting the emission module to the detection module.Type: ApplicationFiled: December 15, 2009Publication date: December 1, 2011Applicant: SILIOS TECHNOLOGIESInventors: Stephane Tisserand, Marc Hubert, Laurent Roux, Fabien Reversat
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Publication number: 20110261365Abstract: The invention relates to a wavelength spectroscopy device comprising, on a substrate a filter cell CF constituted by two mirrors separated by a spacer membrane, the filter cell being made up of a plurality of interference filters. Furthermore, the device also comprises an emission cell CE comprising a plurality of emission sources, each of said sources being associated with one of said interference filters.Type: ApplicationFiled: December 10, 2009Publication date: October 27, 2011Applicant: SILIOS TECHNOLOGIESInventors: Stephane Tisserand, Marc Hubert, Laurent Roux
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Publication number: 20110049340Abstract: The invention relates to a wavelength spectroscopy device comprising, on a substrate SUB, a filter module made up of two mirrors MIR1, MIR2 that are spaced apart by a spacer membrane SP. The filter module comprises a plurality of interference filters FP1, FP2, FP3, the thickness of said spacer membrane SP being constant for any given filter and varying from one filter to another.Type: ApplicationFiled: January 20, 2009Publication date: March 3, 2011Applicant: SILIOS TECHNOLOGIESInventors: Stephane Tisserand, Marc Hubert, Laurent Roux
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Publication number: 20110038037Abstract: A system for homogenizing a laser pulse emitted by a laser source in order to illuminate a target homogeneously, the system having, between the laser source and the target: a phase plate constituted by a plurality of subpupils capable of generating a plurality of delayed laser beams towards the target, the path difference ?d between two adjacent delayed laser beams being greater than or equal to the length of the temporal coherence Tc of the laser pulse, and focusing device; wherein the subpupils and the focusing device are adjusted so that the delayed laser beams are superimposed on the target in a homogeneous spot.Type: ApplicationFiled: October 10, 2008Publication date: February 17, 2011Inventors: Federico Canova, Jean-Paul Chambaret, Stéphane Tisserand, Fabien Reversat
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Patent number: 7756377Abstract: The invention provides a waveguide comprising a channel 12 on an optical substrate 11, the refractive index of the channel being higher than that of the substrate. The waveguide includes at least one guide layer 13 arranged on the channel, the index of said guide layer being higher than that of the substrate. In addition, the channel 12 is integrated in the substrate 11. advantageously, the waveguide further includes a covering layer 14 deposited on the guide layer 13, the index of said covering layer being lower than that of the guide layer and lower than that of the channel. The invention also provides a method of fabricating the waveguide.Type: GrantFiled: December 14, 2001Date of Patent: July 13, 2010Inventors: Stéphane Tisserand, Laurent Roux, Frank Torregrossa, François Flory, Ludovic Escoubas, Emmanuel Drouard
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Publication number: 20080016941Abstract: The invention relates to a calibration device on a silicon substrate SU formed in addition to a reference level Nc by at least two distinct levels Ng, ND. These levels present distinct doping concentrations. The invention also provides a method of making the calibration device, the method including a definition step for defining at least two sections Sg, Sd distinct from a reference section Sc on a silicon substrate SU. This definition step consists in doping the sections different from the reference section at different concentrations.Type: ApplicationFiled: June 23, 2005Publication date: January 24, 2008Inventors: Stephane Tisserand, Laurent Roux, Sophie Jacob
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Publication number: 20050069259Abstract: The invention concerns an optical mode adapter comprising first (C1) and second (C2) channels on an optical substrate (31) designed for connection of first and second waveguides respectively to its first (11) and to its second (12) ends. Said two channels being covered with at least a guide layer (33), the refractive index of the first channel (C1) is lower than that of the second channel (C2). The invention also concerns a method for making said adapter.Type: ApplicationFiled: February 28, 2003Publication date: March 31, 2005Inventors: Stephane Tisserand, Boux Laurent, Fasieu Neversat, Jacob Sophie, Ludovic Escoubas, Emmanuel Drouard
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Publication number: 20040071428Abstract: The invention provides a waveguide comprising a channel 12 on an optical substrate 11, the refractive index of the channel being higher than that of the substrate. The waveguide includes at least one guide layer 13 arranged on the channel, the index of said guide layer being higher than that of the substrate. In addition, the channel 12 is integrated in the substrate 11. advantageously, the waveguide further includes a covering layer 14 deposited on the guide layer 13, the index of said covering layer being lower than that of the guide layer and lower than that of the channel. The invention also provides a method of fabricating the waveguide.Type: ApplicationFiled: November 28, 2003Publication date: April 15, 2004Inventors: Stephane Tisserand, Laurent Roux, Frank Torregrossa, Francois Flory, Ludovic Escoubas, Emmanuel Drouard