Patent ID: 7400824

Claim:
An anti-shake apparatus, comprising: a movable unit; a fixed unit that supports said movable unit when said movable unit is moved in first and second directions, that are different from each other, and when said movable unit is rotated on a movable-plane that is parallel both to said first and said second directions; a first driving unit that supplies a first driving force in said first direction to said movable unit and that is attached to one of said movable unit and said fixed unit; a second driving unit that supplies a second driving force in said first direction to said movable unit and that is attached to one of said movable unit and said fixed unit: a third driving unit that supplies a third driving force in said second direction to said movable unit and that is attached to one of said movable unit and said fixed unit: a fourth driving unit that supplies a fourth driving force in said second direction to said movable unit and that is attached to one of said movable unit and said fixed unit: a first detector that detects a gravitational direction acting on said movable unit; a second detector that detects a rotational movement around a straight line perpendicular to said movable-plane; and a control unit that controls said first, said second, said third, and said fourth driving forces; and when said gravitational direction is parallel to said first direction, said controller controls said third and said fourth driving forces so as to correct said rotational movement; and when said gravitational direction is parallel to said second direction, said controller controls said first and said second driving forces so as to correct said rotational movement.