| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate positional displacement of a subject at a center position of imaging plane due to change between the telephoto side and the wide angle side in the case in which displacement exists between the optical path position of a lens device and the center position of the imaging plane of an imaging device. <P>SOLUTION: A lens device has a variable power lens group moving in the optical path direction at the time of variable powering, a oscillation preventing lens group movable in the vertical direction of the optical path, oscillation prevention drive means for driving the oscillation preventing lens group, and oscillation prevention control means for controlling the driving of the oscillation preventing lens group by the oscillation prevention drive means. The oscillation prevention control means moves the oscillation preventing lens group by controlling the oscillation prevention drive means so that the displacement of a subject imaging at a predetermined point on the imaging plane due to the movement of the variable power lens group. <P>COPYRIGHT: (C)2012,JPO&INPIT |
