MOVING MEMBER CONTROL APPARATUS AND IMAGING APPARATUS INCORPORATING THE SAME

摘要

The invention disclosed herein provides a small-format image-shake correction apparatus and an imaging apparatus incorporating the same. The moving member control apparatus is comprising a base part 10, a moving part 30 that is movable relatively to the base part 10, a first driving part 71 that applies an driving force to the moving part 30, a second driving part 72 that applies an driving force to the moving part 30, a third driving part 73 that applies an driving force to the moving part 30 from a position different from the first 71 and the second driving part 72, a control part 2 that gains control of the driving forces of the first 71, the second 72 and the third driving part 73, and a correction part 3 that makes correction of a first output value Ix1 produced from the control part 2 to the first driving part 71 and a second output value Ix2 produced from the control part 2 to the second driving part 72, depending on a third output value Iy produced from the control part 2 to the third driving part 73, as shown in FIG. 12.

主权项

1. A moving member control apparatus comprising:
a foundation part, a moving part that is movable relatively with respect to the foundation part in a horizontal, vertical, and rotational direction, a first driving part that applies a first driving force to the moving part toward a direction different from a direction relative to a position of center of gravity of the moving part, a second driving part that applies a second driving force to the moving part toward a direction different from a direction relative to the position of center of gravity of the moving part, a third driving part that applies a third driving force to the moving part in a direction different from those relative to the first driving part and the second driving part, a control part that controls the driving forces of the first driving part, the second driving part and the third driving part, and a correction part that makes correction of a first output value produced from the control part to the first driving part and a second output value produced from the control part to the second driving part depending on a third output value produced from the control part to the third driving part, wherein: the correction part makes correction of a first output value produced from the control part to the first driving part and a second output value produced from the control part to the second driving part, depending on a third output value produced from the control part to the third driving part, in such a way as to satisfy two conditions: a first condition under which a total sum of a first rotational force occurring from the first driving force with the position of center of gravity of the moving part as a center of rotation, a second rotational force occurring from the second driving force with the position of center of gravity of the moving part as a center of rotation and a third rotational force occurring from the third driving force with the position of center of gravity of the moving part as a center of rotation becomes zero, and a second condition under which a first translational force occurring from the first driving force in the horizontal direction relative to a directional component going toward the position of center of gravity of the moving part, a second translational force occurring from the second driving force in the horizontal direction relative to a directional component going toward the position of center of gravity of the moving part and a third translational force occurring from the third driving force, the third translational force being a component in the horizontal direction which component is relative to a component in a direction toward the position of center of gravity of the moving part, becomes zero.