Abstract: A device to emit ultrasounds to wireless recharge an electronic device, wherein the emitting device includes at least one ultrasonic transducer and an electronic circuit to control the ultrasonic transducer, wherein the control electronic circuit is configured to: apply to the transducer an excitation electric signal in order to induce the emission of an ultrasonic wave towards the electronic device; and read a feedback electric signal generated by the transducer under the action of a part of the ultrasonic wave reflected by the electronic device, wherein the control electronic circuit comprises a feedback loop configured to adjust the frequency of said ultrasonic wave, so that the energy of said reflected part of the ultrasonic wave tends to a minimum value.

Abstract: An implantable medical device includes a first substrate based on a biocompatible material, wherein the first substrate constitutes a part of a housing of the device and has an external side configured to be put in contact with the biological tissues of a user, wherein the device comprises at least one ultrasonic transducer within a cavity created on an internal side of the first substrate, wherein the transducer is configured so that no layer of air, of gas or of void separates the transducer from the first substrate.

Abstract: A portable two-mode probe intended to be applied against a biological tissue to be examined, the probe comprising: an ultrasonic transducer (34, 63), configured to emit ultrasonic waves into the tissue and to receive ultrasonic waves reflected by the tissue, the transducer extending along a transverse axis; at least two optodes (32, 60, 62a, 62b) placed on either side of the transverse axis, such that the transducer extends between the two optodes; each optode comprising a casing (52, 61), the casing containing: a light emitter (31), configured to emit a light wave toward the tissue; and/or an optical detector (32), configured to detect a light wave scattered by the tissue; the optodes being arranged such that at least one light emitter and at least one optical detector are placed on either side of the transducer; at least one optical detector having a detection area (53, 63a, 63b) formed from a semiconductor and connected to a circuit board (54).

Abstract: An integrated self-sustainable power supply includes a piezoelectric energy harvesting (PEH) beam, a power management unit (PMU) circuit located on the PEH beam, a rechargeable battery located on the PEH beam, and a positive regulated power supply output and a negative regulated power supply output. The PMU circuit includes electrical inputs/outputs. The rechargeable battery includes a negative access pad and a positive access pad, which are in electrical communication with the electrical inputs/outputs of the PMU circuit. The positive regulated power supply output and the negative regulated power supply output are also in electrical communication with the electrical inputs/outputs of the PMU circuit.

Abstract: A piezoelectric bimorph cantilever beam system includes a shim having a first main surface, a second main surface opposite the first main surface, a proximal end connected to an anchor, and a distal end opposite the proximal end. The system further includes a first piezoelectric layer laminated on the first main surface of the shim and a second piezoelectric layer laminated on the second main surface of the shim. A first beam stiffener is provided over the first main surface of the shim adjacent to the anchor with the first beam stiffener at least partially covering the first piezoelectric layer. A second beam stiffener is provided over the second main surface of the shim adjacent to the anchor with the second beam stiffener at least partially covering the second piezoelectric layer.

Abstract: An integrated self-sustainable power supply includes a piezoelectric energy harvesting (PEH) beam, a power management unit (PMU) circuit located on the PEH beam, a rechargeable battery located on the PEH beam, and a positive regulated power supply output and a negative regulated power supply output. The PMU circuit includes electrical inputs/outputs. The rechargeable battery includes a negative access pad and a positive access pad, which are in electrical communication with the electrical inputs/outputs of the PMU circuit. The positive regulated power supply output and the negative regulated power supply output are also in electrical communication with the electrical inputs/outputs of the PMU circuit.

Abstract: A piezoelectric bimorph cantilever beam system includes a shim having a first main surface, a second main surface opposite the first main surface, a proximal end connected to an anchor, and a distal end opposite the proximal end. The system further includes a first piezoelectric layer laminated on the first main surface of the shim and a second piezoelectric layer laminated on the second main surface of the shim. A first beam stiffener is provided over the first main surface of the shim adjacent to the anchor with the first beam stiffener at least partially covering the first piezoelectric layer. A second beam stiffener is provided over the second main surface of the shim adjacent to the anchor with the second beam stiffener at least partially covering the second piezoelectric layer.

Abstract: The object of the invention is an optical coupling device between at least one waveguide embedded in a printed circuit, for conveying an optical beam (F), and an external waveguide, the circuit including, starting from an exterior surface of the circuit, at least one insulating first layer and at least one internal layer incorporating at least one core of embedded waveguide forming said optical path, the device including a coupling element, positioned in a cut, hollowed out in the circuit and cutting the embedded waveguide, the coupling element being furnished with means of refocusing of the optical beam between the embedded waveguide and the external waveguide and at least one lower positioning surface on a reference surface of the cut in relation to the axis of the embedded waveguide.

Abstract: To simplify the making of a connector of optical ferrules for interconnecting two optical fibers in particular of different types, an adapting space made of a material transparent to light rays is provided. A plate physically representing said space bears, on either side, two convergent lenses. Such an arrangement provides many degrees of freedom to adjust the characteristics of the transmission of light rays from one optical fiber to another optical fiber.

Abstract: In order to make an optical interconnection of either two optical fibers to each other or of one optical fiber with an optoelectronic conversion circuit, it is planned to have a module provided with a body or package in which sections of optical fibers are overmolded. The overmolding on the one hand simplifies industrial-scale manufacture and, on the other hand, enables the adoption, for the optical fiber sections, of shapes such as flared shapes and/or lenses enabling an appropriate refocusing or collimation of the light rays conveyed by these optical fibers.

Abstract: In order to resolve a problem related to the manufacture of an intermediary optoelectronic coupling device, the inventive device is provided with a curved mirror having focusing properties. In this way, an additional degree of freedom can be availed of in order to adapt the device to different optical transmission modes: single-mode or multimodes.

Abstract: The invention concerns an integrated intermediate ferrule comprising an optical port and optoelectronic circuits functionally interposed between the optical port and an electric port. To avoid having to place a reflecting mirror causing optical losses, the integrated circuit for detection and optoelectronic conversion is arranged perpendicular to a rectilinear path of the light signal in the ferrule. Such an arrangement eliminates the need for a mirror and makes it easy to obtain accurate setting of the alignment of the optical port and the optoelectronic conversion circuits and finally provides efficient cooling of said optoelectronic conversion circuits.