Panasonic Corporation

Yosuke Yamane

Naoto Yumiki

Norikazu Katsuyama

Kenichi Honjo

Masamichi Ohara

Yoshiyuki Kishimoto

The lens barrel is a lens barrel for forming an optical image of a subject on an imaging element, comprising a first lens unit, a second lens unit, a focus lens unit, a zoom mechanism, and a focus actuator. The focus lens unit is movably supported by the second lens unit in the optical axis direction. The operating force inputted to the zoom control is mechanically transmitted to at least one of the first lens unit and the second lens unit. The focus actuator is fixed to the second lens unit and electrically drives the focus lens unit relative to the second lens unit in the optical axis direction. The second lens unit or the focus lens unit is disposed nearest to the image plane in the optical system including the first lens element, the second lens element, and the focus lens.

Lens barrel and imaging device

The interchangeable lens unit () includes the fourth lens group unit (), the sixth lens group unit (), the focus lens unit (), the zoom ring unit (), the focus motor () and the lens microcomputer (). The focus motor () is fixed to the sixth lens group unit () and is configured to electrically drive the focus lens unit () in the optical axis direction with respect to the sixth lens group unit (). The lens microcomputer () is configured to control the focus motor () so that the focus lens unit () is driven in one direction with respect to the sixth lens group unit () when the sixth lens group unit () is driven in one direction with respect to the imaging sensor () by the zoom ring unit ().

The blurring caused by a tiny tremor movement is eliminated, which almost perfectly without being affected by intentional camera movement by distinguishing the unintentional tremor movement from other movements (or disturbances). A motion detector includes: a motion detecting section for detecting a movement of an image capture device and outputting a detection signal, of which the amplitude and frequency represent the movement; a motion signal generating section for generating a motion signal representing a physical quantity corresponding to the magnitude of the movement based on the detection signal; a notification signal generating section for generating a notification signal that marks start and end of a movement of the image capture device, which is a non-tremor movement, based on the detection signal that has been output; and a control section for controlling the motion signal generating section by reference to the notification signal such that an output of the motion signal is fixed at a predetermined one from the start through the end of the non-tremor movement.

Growing community of inventors

Osaka, Japan

Yosuke Yamane