Hitachi Maxell, Limited

Ikuo Shinta

Susumu Aoki

Takashi Hasuda

Hitoshi Kawamura

Eiji Takahashi

Yoshiaki Yamauchi

Manabu Tani

Jiro Hashizume

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 metal pin is inserted into a hole cylindrically formed in a camera casing so as to be in contact with a shape-memory actuator. The metal pin and the shape-memory actuator are fixed by pressurization. The metal pin is further bonded to a printed circuit board via a solder to electrically and thermally contact the shape-memory actuator and the printed circuit board so as to form the camera module by reducing the wiring size and improving the cooling efficiency.

Imaging device

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.

Growing community of inventors

Ibaraki, Japan

Ikuo Shinta