Abstract: An optical element driving device includes: a driving part configured to drive a holding part configured to hold an optical element; a substrate including a circuit including an inductor configured to increase an input voltage to the driving part; and a cover member comprising a metal and including an opening and a flange part extending at an outer periphery of the opening, the cover member being configured to cover the inductor in a state where the inductor is housed in the opening and the flange part is disposed on the substrate. The substrate includes a metal layer disposed to face the inductor. The metal layer is formed to include a region where the inductor is disposed in plan view.

Abstract: An optical element driving device includes: a holding part configured to hold an optical element; a housing part configured to house the holding part such that the holding part is movable in an optical path direction of the optical element; a driving part including a piezoelectric element configured to drive the holding part; an inductor configured to increase an input voltage to the piezoelectric element; and a position sensor configured to acquire a relative position of the holding part and the housing part in the optical path direction by detecting a magnetic force of a magnet. In regions defined by dividing the holding part and the housing part into equal quarters around an optical axis, the driving part and the position sensor are disposed in a same region, and the inductor is disposed in a region different from the same region.

Abstract: A current detecting circuit includes a first switching element, a second switching element, and a third switching element electrically coupled in series with the first switching element. An output side of the third switching element is electrically coupled to an output terminal. The current detecting circuit includes a current amplifier configured to detect a difference between a first output voltage of the first switching element and a second output voltage of the second switching element. The current amplifier outputs a relative current to be used for detecting an output current that flows out from the output terminal. A ratio of resistance associated with the first switching element to resistance associated with the second switching element is n:1.

Abstract: An electrical connector contains a plurality of contacts, a first ground plate and a second ground plate facing the plurality of contacts and arranged so as to be separated from each other in a ground plane parallel to the at least one plane in which the plurality of contacts are arranged and an insulator for holding the plurality of contacts, the first ground plate and the second ground plate in a state that the plurality of contacts, the first ground plate and the second ground plate are insulated from each other. Both of the first ground plate and the second ground plate include an extending portion extending from one of the first ground plate and the second ground plate toward the other one of the first ground plate and the second ground plate in the ground plane.

Abstract: A lens drive device is provided with: a lens holder for holding a lens; an ultrasonic motor configured to move the lens holder in a direction of an optical axis; and a support part configured to support the lens holder in a state where the lens holder is urged in a direction orthogonal to the optical axis and such that the lens holder is capable of moving in the direction of the optical axis. The support part includes two pairs of support portions which are disposed respectively on two straight lines along an urging direction and parallel to each other such that the support portions of each pair holds the lend holder therebetween.

Abstract: A rotary reciprocating drive actuator includes: a main body unit including: a movable body including a shaft part to which a movable object is connected and to which a magnet is fixed, and a base portion including a pair of wall portions disposed to sandwich the movable object, the base portion supporting the shaft part by the pair of wall portions; a core assembly including: a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body, and a magnet position holding portion; and a connecting surface portion that is integrally disposed on the one end portion side of the core assembly, and that is attached to the one wall portion in a state where the shaft part is inserted into an opening portion and the magnet is disposed in the core assembly.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed and being capable of performing a reciprocating rotation around an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing such that the shaft part is rotatable; a core assembly including: a core body having a plurality of magnetic poles facing an outer circumference of the magnet to sandwich the magnet, a coil body wound around the core body and energized to cause a reciprocating rotation of the movable body, and a magnet position holding portion generating a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a preload applying part externally fitted to the shaft part and configured to apply a preload to the bearing.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected, and a magnet; a base portion including a pair of wall portions disposed to sandwich the movable object and support the shaft part; a core assembly including a core body including a plurality of magnetic poles, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being attached to one wall portion; and a sensor board that is attached to an other wall portion and on which a sensor configured to detect a rotational angle of the one end portion of the shaft part is mounted, in which the sensor board is disposed such that the sensor faces the other wall portion from an outer surface side of the other wall portion and detects the rotational angle.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed, the movable body being configured to perform a reciprocating rotation about an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing; and a core assembly including: a core body including a plurality of magnetic poles facing the magnet, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being fixed to one wall portion, in which at least one of the base portion, the core body, or the core assembly includes a positioning fixation part for positioning and fixing the at least one of the base portion, the core body, or the core assembly to a fixation target object in a direction parallel to the shaft part.

Abstract: The present invention includes: a movable body including a magnet fixed to an other end portion side of a shaft part to which a movable object is connected at one end portion side; a core assembly including a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body wound around the core body, a magnet position holding portion energized to generate a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a circuit board disposed to cover the core assembly at the other end side, in which the coil body includes a terminal part to which an end portion of a coil is connected and that is disposed to protrude to the circuit board side so as to be connected to a circuit of the circuit board.

Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected at one end portion side of the shaft part, and a magnet fixed to an other end portion side of the shaft part, the movable body being supported to be capable of performing a reciprocating rotation about an axis; a core assembly including a magnet position holding portion defining a reference position of the reciprocating rotation; and a sensor board on which a sensor for detecting a rotational angle of the shaft part is mounted, the sensor board being disposed to cover the core assembly from the other end portion side, with the sensor facing the magnet side.

Abstract: An antenna attachment including: a male screw part to be screwed with an antenna main body of an antenna device to be installed on a moving body, the male screw part including a head portion, a thread portion, and an intermediate portion between the head portion and the thread portion having a cross section smaller than the head portion and the thread portion; and a washer including a hole portion allowing passage of part of the male screw part. The hole portion has a shape in which a first hole and a second hole having different sizes are overlapped. The first hole has a shape not allowing passage of the head portion and the thread portion and allowing passage of the intermediate portion. The second hole has a shape not allowing passage of the head portion and allowing passage of the thread portion and the intermediate portion.

Abstract: An antenna device including: an antenna element; an enclosure having a wall body on which the antenna element is placed in a state of being joined to an inner surface of the wall body; and a printed substrate on which the antenna element is mounted with a leg portion of the antenna element connected to one surface of the printed substrate, which is stored inside the enclosure. Holding pieces to sandwich the antenna element between the wall body of the enclosure and the holding pieces are formed at a predetermined interval on the inner surface of the wall body of the enclosure. Respective sizes of and intervals between the holding pieces are set such that a difference between a deflection amount of the wall body and a deflection amount of the antenna element when the enclosure vibrates is less than or equal to a predetermined value.

Abstract: An insulated power supply apparatus includes: a transformer; a switching element connected in series with a primary-side winding of the transformer; an active clamp circuit connected between terminals of the winding; and a semiconductor device for power supply control that controls the switching element and the active clamp circuit. A current-to-voltage converter element is connected in series with the switching element. The semiconductor device includes: a circuit that generates a timing to turn off the switching element based on a voltage obtained by conversion by the converter element and a predetermined turn-off threshold level; a circuit that performs ON/OFF control of the switching element in a burst mode at a predetermined load or less; and a circuit that, in the burst mode, changes a burst frequency to be lower as a load current is smaller with the number of switching times of the switching element in one burst cycle fixed.

Abstract: A movable device includes a movable portion and a drive structure configured to drive the movable portion. The movable device includes a support frame that surrounds the movable portion and supports the drive structure. The movable device includes electrodes electrically coupled to the drive structure. The movable device includes pseudo electrodes electrically isolated from the drive structure. The electrodes and the pseudo electrodes are provided on the support frame.

Abstract: A magnetic detection device that comprises an amplification circuit amplifying a detection signal from a magnetic sensor that is positioned, for example, in a location where an alternating current magnetic field enters as noise, and detects an alternating current magnetic field targeted for monitoring, said magnetic detection device further comprising: timer circuits that are activated in response to a change in the output of the amplification circuit, and if these clock a prescribed time, the outputs thereof change; a logic circuit that treats the outputs of the timer circuits as inputs; and an oscillation circuit for generating an operation clock signal for the timer circuits. The timer circuits are structured such that if the output of the amplification circuit changes to a different direction before the clocking of the prescribed time is complete, the timer circuits are reset.

Abstract: A semiconductor integrated circuit includes: one input terminal; multiple output terminals; multiple first current control elements connected between the input terminal and the respective output terminals; a control circuit that controls the first current control elements; a fault detection circuit that includes multiple voltage comparator circuits each of which compares a voltage proportional to a voltage of one of the output terminals with a predetermined threshold voltage and that detects an open-circuit state or a short-circuit state of the output terminals; an external terminal connected to an external resistor; a voltage convertor circuit that generates the threshold voltage according to a voltage of the external terminal that is generated by flowing a current through the external resistor, the threshold voltage being applied to an input terminal of each of the voltage comparator circuits; and a detection result output terminal for outputting a detection result by the fault detection circuit.

Abstract: A switch according to the present invention includes a base including a recessed portion on one surface of the base; a click spring having a dome shape, the click spring being provided at the recessed portion such that the bottom of the recessed portion is contacted at a dome-shaped opening side of the click spring; a cover provided to cover the recessed portion and to house the click spring at the recessed portion; and a strain detecting element attached to another surface of the base. The strain detecting element is configured to detect strain of the base, the strain occurring in accordance with a depression amount of the click spring that is depressed.

Abstract: Provided are an optical element drive device, a camera module, and a camera-equipped device that are small and low-profile but also improve drive performance and noise reduction performance. An optical element drive device that comprises a fixed part, a mobile part that is separated from the fixed part in the optical axis direction, a support part that supports the mobile part on the fixed part, a drive unit that moves the mobile part relative to the fixed part within an optical axis orthogonal plane that is orthogonal to the optical axis direction, and a tension coil spring that connects the fixed part and the mobile part and urges the fixed part and the mobile part toward each other. A damper material is provided to the tension coil spring.

Abstract: An optical element driving device includes: a fixed part; a movable part disposed apart from the fixed part; a support part which supports the movable part with respect to the fixed part; and a driving unit which has an ultrasonic motor that converts a vibration motion into a linear motion and a power transmission part that transmits the driving force of the ultrasonic motor to the movable part, and moves the movable Dart with respect to the fixed Dart, wherein the power transmission part has a plate which is in contact with a resonance part of the ultrasonic motor, and a damper material is disposed on a second surface side opposite to a first surface which is in contact with the resonance part in the plate.