Patents by Inventor Fabrice Casset

Fabrice Casset 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).

  • Publication number: 20220337954
    Abstract: A micrometric speaker includes a frame, an electromechanical transducer, and a mechanical-acoustic transducer comprising a rigid plate movably mounted in the frame. The electromechanical transducer comprises two piezoelectric actuators and two elastic strips. The frame comprises a central crossmember from which the two strips extend until engaging two lateral coupling edges of the mechanical-acoustic transducer, and the mechanical-acoustic transducer comprises two linearising springs each extending from one of the lateral edges to the rigid plate, to enable, during a deformation of the strips, a movement of the two lateral edges to the central crossmember and reduce the longitudinal constraints applied to the strips during their deformation due to their “recessed-guided” bending configuration.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 20, 2022
    Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DU MANS
    Inventors: Romain LIECHTI, Fabrice CASSET, Thierry HILT, Stephane DURAND
  • Publication number: 20220336725
    Abstract: A piezoelectric transducer device includes a support, a piezoelectric element, a first connecting element and a second electrical connecting element, the piezoelectric element being carried by the support and each of the first and second electrical connecting elements being electrically connected, respectively, to a first area and a second area, distinct from the first area, of the piezoelectric element, the piezoelectric element including a lower face opposite the support and an upper face, opposite to the lower face, wherein the upper face is integrally exposed or is covered, partially or not, only with the second electrical connecting element.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 20, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Fabrice CASSET
  • Patent number: 11474607
    Abstract: A portable virtual, augmented, or mixed reality device, including: a mount intended to be worn on a user's head; a display screen attached to the mount and intended to be arranged in front of one of the user's eyes; a plurality of ultrasound transducers attached to the mount; and a control circuit configured to control the display screen to display images, and the ultrasound transducers to generate, in air, at a distance from the mount, a pressure distribution detectable by the user's hand to obtain a haptic effect.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: October 18, 2022
    Assignee: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Fabrice Casset, Stéphane Fanget, Angélique Rascle
  • Publication number: 20220300076
    Abstract: Flexible haptic interface including a chamber containing a non-newtonian fluid and bounded at least partially by a flexible wall the exterior face of which defines a touch surface capable of being touched by a user; a plurality of actuators borne by a flexible carrier and placed so as to transmit a local mechanical excitation to the fluid; and a control circuit connected to the actuators and configured to modulate the signals sent to the actuators in order to mechanically induce a modification of the rheology of the fluid and to generate a haptic sensation perceptible by the user on the touch surface.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 22, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Fabrice CASSET
  • Publication number: 20220261081
    Abstract: A flexible haptic interface including a haptic structure defining a touch surface touchable by a user, the structure including a plurality of stiff touch pixels borne by a flexible carrier, at least one actuator that makes contact with each pixel and that is arranged to transmit, to the pixel, a mechanical excitation that leads to an effect perceptible tactilely by the user.
    Type: Application
    Filed: February 17, 2022
    Publication date: August 18, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Fabrice CASSET
  • Publication number: 20220171464
    Abstract: A multimodal haptic device includes a matrix incorporating at least one cell, each cell comprising: at least one thermal element capable of generating a cooling and a heating; at least one vibratory element capable of generating a vibration; and at least one encapsulation layer made of an electrically insulating material; the at least one vibratory element and the at least one thermal element being anchored in at least one part in the at least one encapsulation layer; each cell being adapted to be in contact directly or indirectly with the skin of a person so as to transmit thermal and/or vibratory sensations to that person, the cell having a thickness less than or equal to ten millimetres.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventors: Emmanuel OLLIER, Tristan CAROFF, Fabrice CASSET
  • Publication number: 20220164043
    Abstract: A haptic interface of the ‘mid-air’ type, including a control circuit, a plurality of ultrasonic transducers connected to the circuit, which includes a first set of transducers emitting at a first ultrasound carrier frequency and at least a second set of transducers emitting at a second ultrasound carrier frequency different from the first; the control circuit being configured for modulating the signals sent to the transducers in order to generate, with the ultrasound waves emitted by at least a part of the transducers of the first set, an acoustic pressure detectable by touch within at least a first focal region, and generate, with the ultrasound waves emitted by at least a part of the transducers of the second set, an acoustic pressure detectable by touch within at least a second focal region.
    Type: Application
    Filed: November 26, 2021
    Publication date: May 26, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Fabrice CASSET, Angélique RASCLE
  • Patent number: 11209642
    Abstract: A scanner includes at least a support including at least one first movable part, an actuator configured to move the first movable part of the support, and a phased optical grating disposed on the first movable part of the support. The grating includes at least one plurality of optical phase shifters and an optical source coupled to a plurality of optical phase shifters which is able to emit an optical beam coming from the optical source.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: December 28, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Stephane Fanget, Fabrice Casset, Laurent Mollard
  • Publication number: 20210397027
    Abstract: A phase modulator for a light beam comprising a waveguide having a longitudinal axis, and a piezoelectric actuator to apply a mechanical stress within said waveguide in response to an electrical bias, said actuator comprising a first part covering a first side of the waveguide and having a first axis of symmetry essentially parallel to the longitudinal axis. The actuator comprises a second part covering a second side of the waveguide, said second part having a second axis of symmetry essentially parallel to the longitudinal axis.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 23, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Fabrice CASSET
  • Publication number: 20210154670
    Abstract: Device for locating biological cells of at least one size, including a fluid cavity (3), fluid connection means (6.1, 6.2) configured to allow the introduction of liquid and cells into the fluid cavity, a plate (4) provided with an accommodating surface (8) having properties of adhesion vis-à-vis cells, said plate (4) being suspended in the fluid cavity (3), means (10) for vibrating the plate (4) in at least one stationary mode including at least one actuator (16) intended to act on the plate (4) and a control unit (UC) configured to control the at least one actuator so as to actuate the vibrating plate in a stationary mode at a wavelength greater than the size of the cells.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Institut National de la Sante et de la recherche Medicale
    Inventors: Fabrice CASSET, Arnaud MILLET, Baptiste NEFF
  • Patent number: 10968422
    Abstract: A device for treating at least one biological cell includes at least one treatment support comprising a receiving surface enabling the adhesion of the at least one biological cell, at least one actuator capable of deforming said support in order to apply a stress to said at least one cell, and means of controlling said at least one actuator such that the actuator deforms the treatment support according to a given amplitude of deformation and for a given duration so as to generate at least one transitory pore in a membrane of the biological cell.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: April 6, 2021
    Assignees: Commissariat A L'Energie Atomique et aux Energies Alternatives, INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM)
    Inventors: Fabrice Casset, Arnaud Millet
  • Patent number: 10954118
    Abstract: A device with a membrane comprising a support, a membrane made of a polymer material suspended on said support and at least one actuating module arranged opposite a face of the membrane and separate from said membrane, said actuating module comprising at least one actuator comprising at least one piezoelectric material and a beam connected to the support and separate from the membrane, the piezoelectric material being connected to the beam, such that, when a difference in electric potential is applied to the piezoelectric material, a bimetal effect appears between the piezoelectric material and the beam deforming the beam in the direction of the membrane, causing the deformation of the membrane, said device also comprising at least one electrostatic actuator configured for compressing at least one part of the membrane on the at least one part of the actuating module.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: March 23, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Fabrice Casset, Pauline Poncet
  • Publication number: 20210011280
    Abstract: A scanner including at least: a support including at least one first movable part, an actuator configured to move the first movable part of the support, and a phased optical grating disposed on the first movable part of the support and including at least one plurality of optical phase shifters and an optical source coupled to a plurality of optical phase shifters which is able to emit an optical beam coming from the optical source.
    Type: Application
    Filed: July 6, 2020
    Publication date: January 14, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Stephane FANGET, Fabrice CASSET, Laurent MOLLARD
  • Publication number: 20200257366
    Abstract: A portable virtual, augmented, or mixed reality device, including: a mount intended to be worn on a user's head; a display screen attached to the mount and intended to be arranged in front of one of the user's eyes; a plurality of ultrasound transducers attached to the mount; and a control circuit configured to control the display screen to display images, and the ultrasound transducers to generate, in air, at a distance from the mount, a pressure distribution detectable by the user's hand to obtain a haptic effect.
    Type: Application
    Filed: February 5, 2020
    Publication date: August 13, 2020
    Applicant: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Fabrice Casset, Stéphane Fanget, Angélique Rascle
  • Patent number: 10670942
    Abstract: The invention relates to an optical device (100) comprising: a waveguide (200) comprising a core (210) extending along an axis of symmetry XX?, and encapsulated in a cladding layer (220), an actuator (400) with width La, overlapping the core (210) and extending along an axis of symmetry YY? parallel to the axis of symmetry XX?, said actuator (400) is designed so that when a voltage is applied to it, it imposes a mechanical stress at the core (210) to modify its refraction index the device being characterised in that the second axis of symmetry YY? is offset by a lateral offset D from a plane of symmetry of the waveguide (200) including the first axis of symmetry and perpendicular to the cladding layer (220), the lateral offset is between 15% and 50% of the width La.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: June 2, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Fabrice Casset, Thierry Hilt
  • Patent number: 10538731
    Abstract: Device for sorting living cells, comprising at least one support including a surface having adherence properties with respect to said type of living cells, actuators capable of making said surface vibrate at at least one given frequency and a controller for controlling the actuators such that the surface vibrates at a frequency causing the detachment of at least one type of living cells.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: January 21, 2020
    Assignee: Commissariat a L'Energie Atomique et aux Energies Alternatives
    Inventors: Fabrice Casset, Arnaud Millet
  • Publication number: 20200017354
    Abstract: A device with a membrane comprising a support, a membrane made of a polymer material suspended on said support and at least one actuating module arranged opposite a face of the membrane and separate from said membrane, said actuating module comprising at least one actuator comprising at least one piezoelectric material and a beam connected to the support and separate from the membrane, the piezoelectric material being connected to the beam, such that, when a difference in electric potential is applied to the piezoelectric material, a bimetal effect appears between the piezoelectric material and the beam deforming the beam in the direction of the membrane, causing the deformation of the membrane, said device also comprising at least one electrostatic actuator configured for compressing at least one part of the membrane on the at least one part of the actuating module.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 16, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Fabrice CASSET, Pauline PONCET
  • Patent number: 10532379
    Abstract: A mechanical structure comprising a stack including an active substrate and at least one actuator designed to generate vibrations at the active substrate, the stack comprises an elementary structure for amplifying the vibrations: positioned between the actuator and the active substrate, the structure designed to transmit and amplify the vibrations; and comprising at least one trench, located between the actuator and the active substrate. A method for manufacturing the structure comprising the use of a temporary substrate is provided.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 14, 2020
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, STMICROELECTRONICS (CROLLES 2) SAS, UNIVERSITÉ GRENOBLE ALPES
    Inventors: Fabrice Casset, Skandar Basrour, Cédrick Chappaz, Jean-Sébastien Danel
  • Patent number: 10503259
    Abstract: A vibrating device comprises: a first support configured to be deformed having a surface defined in a plane in directions X and Y; at least one actuator configured to generate plate modes propagated in the first support; the first support comprising: at least one defect with respect to the propagation of the plate modes; the defect being of geometrical nature or corresponding to a structural heterogeneity; comprising: a second support; at least one embedded mechanical reflector secured to the first support and in contact with the first support, configured to immobilize the first support in at least one direction Z at right angles to the directions X and Y, the mechanical reflector being secured to the second support and; the embedded mechanical reflector being configured to isolate a so-called active zone belonging to the surface defined in a plane in directions X and Y in which the plate modes are propagated, the active zone excluding the defect; the actuator being situated in the active region.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: December 10, 2019
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, STMICROELECTRONICS (CROLLES 2) SAS, UNIVERSITE GRENBOLE ALPES, INSTITUT POLYTECHNIQUE DE GRENOBLE
    Inventors: Cédrick Chappaz, Fabrice Casset, Skandar Basrour, Marie Gorisse
  • Publication number: 20190344278
    Abstract: A system for handling biological cells includes a main channel having an inlet end and an outlet end, and, at least over a first portion from the inlet end, including a cross section such that a cell circulating in the portion undergoes mechanical stresses. The system further includes first means for detecting the presence of a cell at the inlet end of the main channel and at least one access zone opening into the main channel between its inlet end and its outlet end in the first portion, in order to make it possible to exert an action on the cell. The system also includes means for displacing the cell in order to control the displacement of the cell between the inlet end and the outlet end.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 14, 2019
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Vincent AGACHE, Fabrice CASSET, Stephane FANGET, Yves FOUILLET, Arnaud MILLET