Murata Manufacturing Co., Ltd.

Yuuki Ishii

Katsumi Fujimoto

Hitoshi Sakaguchi

Kenji Nishiyama

Masaaki Takata

Chikahiro Horiguchi

Yasuhiro Kuratani

Shinichiro Ichiguchi

Noritaka Kishi

Takahide Nakadoi

Yuzo Mizushima

Nobumasa Kitamori

Takaaki Mori

Rei Higashida

A vibration device includes an internal vibration body to amplify a vibration, a piezoelectric element connected to one end of the internal vibration body, and a light transmission body connected to an another end of the internal vibration body. The vibration device further includes an external vibration body including a first connection portion connected to the light transmission body and a second connection portion extending outward of the light transmission body from the first connection portion to attenuate the vibration.

Vibration device and imaging device

A vibration device includes a light-transmissive body, and a vibrator to vibrate the light-transmissive body at a vibration acceleration of equal to or more than about 1.5×10m/sand equal to or less than about 8.0×10m/s.

Vibration device and vibration control method

An optical device includes a protective cover, a housing, and a vibrating body that vibrates the protective cover by selecting, from multiple vibration modes in which the protective cover is vibrated, a cleaning mode in which vibration displacement of the protective cover becomes maximum and a higher-order heating mode in which the number of nodes is larger than that in the cleaning mode. In the heating mode, the position of the maximum vibration displacement in this vibration mode is within a region of the protective cover that corresponds to the field of view of the optical sensor.

Optical device and optical unit including optical device

A vibrating device includes a vibrating element, a support, and a connector. The vibrating element includes a vibrating body that is tubular and includes a first opening end surface and a second opening end surface. The support extends in an axial direction and supports the vibrating body, the axial direction being a direction connecting the first opening end surface and the second opening end surface of the vibrating body. The connector connects the vibrating body and the support to each other. The vibrating body vibrates in a breathing vibration mode to generate a first node and a second node on the vibrating element at different positions in the axial direction. The connector is positioned between the first node and the second node.

Vibrating device and optical detection apparatus

A cleaning device includes a casing holding an image capturing device, a protective cover disposed in a visual field of the image capturing device, a vibrator to vibrate the protective cover, a controller to control the vibrator, a monitor to detect an electrical characteristic value associated with a vibration of the vibrator, and a storage to store determination criteria based on which the controller evaluates the electrical characteristic value detected by the monitor. The controller is configured to evaluate the electrical characteristic value based on the plurality of determination criteria stored in the storage and clean a surface of the translucent body by controlling the vibrator according to the determination.

Cleaning device, and image capturing apparatus including cleaning device

A vibration device includes a protective cover to transmit light with a predetermined wavelength, a first cylindrical body to hold the protective cover at one end, a plate spring to support the other end of the first cylindrical body, a second cylindrical body to support, at one end, a portion of the plate spring in an outer side portion of a portion that supports the first cylindrical body, and a vibrating body that is provided at the other end of the second cylindrical body to vibrate in an axial direction of the second cylindrical body.

Vibration device and imaging unit including vibration device

A vibration device includes a protective cover that transmits light with a predetermined wavelength, a first cylindrical body that holds the protective cover at one end, a plate-shaped plate spring that supports the other end of the first cylindrical body, a second cylindrical body that supports, at one end, a portion of the plate spring in an outer side portion of a portion that supports the first cylindrical body, and a plurality of piezoelectric elements on side surfaces of the second cylindrical body and that vibrates in a direction perpendicular to a penetrating direction of the second cylindrical body.

A vibration device includes a protective cover, a first cylindrical body, a plate spring, a second cylindrical body, a piezoelectric element, and a vibrating plate. The vibration device further includes a non-equilibrium structure that removes a mass of a portion of or adds a mass to at least one of the protective cover, the first cylindrical body, the plate spring, the second cylindrical body, and the vibrating plate.

Growing community of inventors

Nagaokakyo, Japan

Yuuki Ishii