Panasonic Intellectual Property Management Co., Ltd.

Tatsuhiro Enomoto

Makoto Umeda

Kenichi Miyamori

Naoki Yoshikawa

Tetsuya Morita

Takeshi Sakakibara

An optical device actuator comprises a movable frame () including a focus lens (L); a main shaft guide (); a piezoelectric element (); a weight (); a fixed frame (); a guide holding frame (); and a spring (). The piezoelectric element () imparts vibration to a first end () side of the main shaft guide (). The fixed frame () supports the piezoelectric element () and the weight () disposed on the first end () side of the main shaft guide (). The guide holding frame () supports, in a fixed state, the main shaft guide () on a second end () side on the opposite side from the first end () side. The spring () is provided on the first end () side of the main shaft guide (), and presses the piezoelectric element () along the axial direction with respect to the first end () of the main shaft guide () via the weight ().

Optical device actuator and lens barrel provided with same

A position detection device includes a detection portion and a magnetism generation portion. The detection portion includes a first magnetism detection element and a second magnetism detection element. The first magnetism detection element and the second magnetism detection element are disposed on a plane. The magnetism generation portion is disposed at a position opposite the detection portion. The magnetism generation portion includes mutually opposing magnetic fluxes with respect to the detection portion by performing bipolar magnetization on a face opposite the plane where the first magnetism detection element and the second magnetism detection element are disposed.

Growing community of inventors

Nara, Japan

Tatsuhiro Enomoto