Patent ID: 7974009

Claim:
An image fluctuation correcting apparatus that rotates one or more apex angle prisms along a plane nearly perpendicular to an optical axis of image lenses in a frame body arranged on the optical axis of image lenses by means of electromagnetic force according to an amount of fluctuation of a captured image, and cancels the amount of fluctuation to correct image fluctuation, comprising: one or more shafts that are substantially parallel to the optical axis and laterally installed in the frame body; one or more prism holding members that each includes a frame portion holding one apex angle prism and a shaft bush portion connected to the frame portion so as to be perpendicular to the one apex angle prism, and capable of rotating around a corresponding shaft fitted to the shaft bush portion within a predetermined angle range, together with the one apex angle prism; one or more rotary yokes that each is fixed to a corresponding shaft bush portion so as to be located at a side opposed to a corresponding frame portion; one or more magnets that each is magnetized into a N pole and a S pole and fixed to the corresponding shaft bush portion so as to be located at the side opposed to the corresponding frame portion; one or more back yokes that each is attached to an outer peripheral portion of the frame body; and one or more drive coils that each is wound so as to surround a corresponding magnet and attached to the outer peripheral portion of the frame body, wherein one apex angle prism is rotated together with a corresponding prism holding member by electromagnetic force generated between a corresponding magnet and a corresponding drive coil by flowing in the corresponding drive coil electric current for rotating the corresponding prism holding member in a direction for canceling the amount of fluctuation.