Mitsumi Electric Company Ltd.

Minebea Mitsumi Inc.

Takayuki Numakunai

Kenichi Furukawa

Kensuke Yamada

Yuki Takahashi

Tomoya Ishitani

Yoshihiro Sakanushi

Shintaro Tomitsuka

Provided is a vibration actuator that gives vibration to a vibration presenting unit that presents vibration depending on a pressing operation, the vibration actuator comprising: a fixing part; a movable part fixed to the vibration presenting unit; an elastic support part connected to the fixing part and the movable part, and movably supports the movable part with respect to the fixing part; and a support-part side fixing part fixed to the elastic support part in the movable part; wherein a strain body that is strained in accordance with the pressing operation on the vibration presenting unit and a strain detection unit configured to detect strain of the strain body are provided between the support-part side fixing part and a presenting-unit side fixing part fixed to the vibration presenting unit, and the movable part is configured to vibrate by electromagnetic driving in accordance with the strain of the strain body.

Vibration actuator and vibration presenting apparatus

A foreign material adhesion preventing device () that is mounted on a camera main body () having an image capturing surface () exposed to external surroundings for preventing foreign material from adhering to the image capturing surface () has a cover () having a cover member () configured to cover the image capturing surface () and a nozzle () for spraying a fluid towards an outer surface () of the cover member (). This can provide the highly versatility foreign material adhesion preventing device () that can prevent foreign material from adhering directly to the image capturing surface () of the camera main body ().

Foreign material adhesion preventing device and camera device provided with same

Provided is a power generator. The power generator includes two magnetostrictive rodsarranged side by side and formed on a magnetostrictive material, coilsrespectively wound around the magnetostrictive rodsand a beam memberhaving a function of generating stress in the two magnetostrictive rods. The power generatoris configured so that elastic energy stored in the beam memberis larger than elastic energy stored in each of the magnetostrictive rodswhen tip end portions of the two magnetostrictive rodsand the beam memberare displaced with respect to base end portions of the two magnetostrictive rodsand the beam memberto deform the two magnetostrictive rodsand the beam member

Power generator

A power generatorincludes a magnetostrictive rodthrough which lines of magnetic force pass in an axial direction thereof, a beam memberhaving a function of generating stress in the magnetostrictive rod, and a coilarranged so that the lines of magnetic force pass inside the coilin an axial direction of the coil. The beam memberis arranged along the magnetostrictive rodand configured to allow one end portion and the other end portion of the magnetostrictive rodto approach to each other to generate compressive stress in the magnetostrictive rod. Further, in the power generator, it is preferable that a gap between the beam memberand the magnetostrictive rodon the side of the one end portion of the magnetostrictive rodis larger than a gap between the beam memberand the magnetostrictive rodon the side of the other one end portion of the magnetostrictive rodin a side view.

A power generating element includes a magnetostrictive rod through which lines of magnetic force pass in an axial direction thereof, the magnetostrictive rod formed of a magnetostrictive material; a magnetic rod arranged in parallel with the magnetostrictive rod, the magnetic rod formed of a magnetic material; a first coupling mechanism for coupling one end portion of the magnetostrictive rod and one end of the magnetic rod; a second coupling mechanism for coupling the other end portion of the magnetostrictive rod and the other end portion of the magnetic rod; and a coil provided so that the lines of magnetic force pass inside the coil in an axial direction thereof and in which a voltage is generated on the basis of a variation of density of the lines of magnetic force caused when the magnetostrictive rod is expanded or contracted. Further, at least one of the one end portion and the other end portion of the magnetostrictive rod is formed into a male screw portion.

Power generating element

An operation input apparatus configured to receive a force from an operator, including: a boardincluding a placement surface on which coilsare placed, the coils being arranged in a circumferential direction of a circle formed by connecting points apart from a reference point by the same distance; a keythat is provided in a side where the force is input with respect to the board; and a return springelastically supporting the key, wherein the keyincludes an opposed surface opposed to the placement surface and an operation surface configured to receive an application of the force, and causes an inductance of at least one of the coilsto change with an approach of the opposed surface to the placement surface due to the application of the force on the operation surface.

Operation input apparatus and operation input detection apparatus

An input device includes a first yoke; a substrate disposed on the first yoke; a coil disposed on the substrate; and a second yoke disposed above the coil and configured to be displaced downward by a force applied and thereby to change inductance of the coil. The input device is configured to output a signal corresponding to the amount of displacement of the second yoke. The substrate has an opening that communicates with a hollow of the coil, and the first yoke includes a step that is inserted into the opening of the substrate.

Input device

The present invention relates to an amplitude modulation apparatus, an amplitude limiting method, and a transmission apparatus for performing amplitude limitation on an orthogonally modulated signal. The amplitude modulation apparatus, the amplitude limiting method, and the transmission apparatus enable peak value suppression of a transmission wave with a simple structure. An amplitude limiting apparatus that performs amplitude limitation on an orthogonally modulated signal includes first amplitude limiting means () for limiting to predetermined amplitudes the amplitudes of an I-component and a Q-component of the orthogonally modulated signal that are orthogonal to each other, and second amplitude limiting means (-) for performing further amplitude limitation on the I-component and the Q-component according to the difference between the amplitude-limited I-component and Q-component obtained by the first amplitude limiting means.

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Tokyo, Japan

Takayuki Numakunai