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公开(公告)号：US11785391B2
公开(公告)日：2023-10-10
申请号：US17721950
申请日：2022-04-15
Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE , UNIVERSITE DU MANS
Inventor： Romain Liechti , Fabrice Casset , Thierry Hilt , Stephane Durand
CPC classification number: H04R7/24 , H04R1/288 , H04R7/02 , H04R17/00 , H04R2207/021 , H04R2400/11 , H04R2499/11
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.
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公开(公告)号：US10670942B2
公开(公告)日：2020-06-02
申请号：US16244257
申请日：2019-01-10
Inventor： Fabrice Casset , Thierry Hilt
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.
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Patent Agency Ranking
公开(公告)号：US11209642B2
公开(公告)日：2021-12-28
申请号：US16921117
申请日：2020-07-06
Inventor： Stephane Fanget , Fabrice Casset , Laurent Mollard
IPC: G02B26/10
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.
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公开(公告)号：US10538731B2
公开(公告)日：2020-01-21
申请号：US15046803
申请日：2016-02-18
Inventor： Fabrice Casset , Arnaud Millet
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.
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公开(公告)号：US09900700B2
公开(公告)日：2018-02-20
申请号：US14915749
申请日：2014-09-04
Inventor： Fabrice Casset , Remy Dejaeger , Stephane Fanget , David Henry , Quentin Leclere
CPC classification number: H04R7/26 , H04R1/005 , H04R17/00 , H04R31/00 , H04R2201/003 , H04R2307/201 , H04R2307/207
Abstract: A digital acoustic device including: at least one suspended diaphragm facing a support and at least one actuator associated with the diaphragm, the associated actuator being configured to move the diaphragm away from and/or closer to the support; a stop mechanism configured to interrupt movement of the diaphragm further to activating the actuator when the diaphragm has a non-zero speed, the stop mechanism being sized to interrupt the movement of the diaphragm when the movement of the diaphragm is greater than or equal to 50% of the theoretical maximum stroke of the diaphragm and lower than or equal to 95% of the theoretical maximum stroke of the diaphragm.
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公开(公告)号：US11650668B2
公开(公告)日：2023-05-16
申请号：US17651444
申请日：2022-02-17
Inventor： Fabrice Casset
CPC classification number: G06F3/016 , G06F3/0412 , G06F2203/04102 , G06F2203/04103
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.
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公开(公告)号：US10954118B2
公开(公告)日：2021-03-23
申请号：US16335511
申请日：2017-09-22
Inventor： Fabrice Casset , Pauline Poncet
IPC: H02K33/00 , H02K1/12 , H02K5/04 , H02K41/035 , H01L41/09 , H01L41/29 , B81B3/00 , H01L41/31 , H01L41/332 , H01L41/187
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.
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