| 摘要 |
With a simple structure, a reliable driving control is obtained for a corrective optical system for correcting an image deviation resulting from unsteady motions caused by a manual holding of an apparatus. A corrective optical system for correcting an image deviation is movably supported in a plane perpendicular to the optical axis. There are provided a drive for driving this system and a movable member operated by this drive to provide a corrective motion accompanying a rotational component when it is driven. There are also provided a detector fixed to this movable member for detecting its angle variations with respect to the inertial system as well as means for controlling the operation of the drive. The shifting amount D' of the corrective optical system for correcting an image deviation d (=fx theta ) at a variation angle theta of the optical axis of the optical system having a focal length f is D'=D/A (where A=a proportional coefficient and D=an image shifting amount). In response thereto, the movable member is controlled to make its angle variation - theta with respect to the optical system. Hence performing the correction of an image deviation.
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