Hitachi Maxell, Limited

National Institute for Researches in Inorganic Materials

Susumu Aoki

Ikuo Shinta

Takashi Hasuda

Hitoshi Kawamura

Eiji Takahashi

Tsuyoshi Maro

Manabu Tani

Yoshio Ishizawa

Chuhei Oshima

Keisuke Taguchi

Michiko Yamazaki

Nobuyuki Nagai

A drive device in which the frequency of a drive waveform applied to a piezoelectric element is easily settable with less obligation to consider resonance in a stationary member. The device includes a piezo element that expands and contracts according to a drive voltage, a transmission shaft that receives vibration produced by the piezo element, a stationary member that holds the transmission shaft in a slidable state along the longitudinal direction of the transmission shaft, and a lens holder that is displaced together with the piezo element and transmission shaft relative to the stationary member according to drive of the piezo element. The piezo element and the transmission shaft move in the moving direction of the lens holder in synchronization with the lens holder according to drive of the piezo element in the state where the piezo element is spaced from the stationary member. By employing this structure, the frequency of the drive waveform applied to the piezo element can be set easily without considering resonance in the stationary member.

Drive device, image acquisition device, and electronic apparatus

A drive device capable of engaging a drive shaft and a part holding the drive shaft with a suitable force without accompanying increase in the size of the drive device. The drive device includes a couple member with a piezoelectric element and a transmission shaft coupled together, a lens holder that holds a lens and to which the couple member is secured, a biasing member that biases the transmission shaft in a direction intersecting a placement direction of the transmission shaft viewed from the lens holder (excluding a lengthwise direction of the transmission shaft), and a link member (link body) that holds the transmission shaft in a slidable manner together with the biasing member.

Drive device, lens part, and camera module

A camera module includes a mount for holding a lens directly or indirectly, a cover plate glass with transparency fixed to the mount. A solid-state imaging device is mounted on the cover plate glass. The cover plate contacts a plurality of ribs formed in the mount, and the mount and the cover plate are positioned.

Camera module

A camera module includes a sensor for converting incident light incident thereto into an electric signal and outputting the electric signal therefrom, a glass cover for transmitting therethrough light to the sensor, the light being the incident light; a flexible printed circuit for receiving as an input thereto the electric signal outputted from the sensor, a lens unit for focusing the incident light onto the sensor, and a pedestal for holding the lens unit, the pedestal including a sidewall section which includes a lower end surface being fixed onto the flexible printed circuit by use of adhesive. A depression is formed along the sidewall section of the mount to discard the adhesive therein.

Camera module and imaging apparatus

There are provided first and second lenses, by which light incident from outside is condensed and caused to outgo, a barrel, which holds the first and second lenses, a barrel holding part having a substantially cylindrical shape to hold therein the barrel, a movement device for movement of the barrel holding part in an optical axis direction of the first and second lenses, and a pedestal having a lens receiving portion, which receives therein the barrel holding part in a slidable state, the pedestal receiving therein the barrel holding part contacting in plural lines with an inner wall surface of the lens receiving portion of the pedestal.

Lens module, camera module, and method of manufacturing camera module

A field emission type electron gun comprises a cathode, an anode placed opposing the cathode, a filament placed obliquely above the anode in a space between the cathode and anode to heat the anode, a control electrode and a vacuum container housing the cathode, the anode the control electrode and the filament. The anode has an elongated body with a through hole at its center, the control electrode is provided near the anode, and means for rendering the electric potential of the control electrode to be negative to the electric potential of the anode is provided to concentrate an electron beam to the top end of the anode.

Growing community of inventors

Ibaraki, Japan

Susumu Aoki