extender lens

Abstract

Abstract PURPOSE:To eliminate an image blur and to obtain a sharp image by moving the lens group of an extender optical system at right angles to the optical axis according to a blur based upon an external force and correcting the image blur. CONSTITUTION:An extender lens 2 has the extender optical system 5 which has >=1.3 image forming power BA and is movable at right angles to the optical axis, a blur detector 7 such as an acceleration sensor, and an actuator 8 which drivers the extender optical system 5 at right angles to the optical axis. Then, an image blur correcting device is incorporated in the extender, so even when a hand shake is made, the extender optical system 5 is made downward eccentric at right angles to the optical axis in synchronism with the camera shake, and then a light beam is refracted by the extender optical system which is made eccentric, so that an eccentric image is held at its original position. Consequently, the image blurring is prevented and high picture quality can be secured.

Inventors

• 👤 Nozomi Kitagishi
• 👤 望 北岸

Bibliographic Details