Tremble preventing device

A tremble preventing device comprising:

• a detector that detects an amount of an optical device tremble;
• a correction optical system that corrects a tremble of a focused image due to said optical device tremble, said correction optical system including a lens supporting frame, said lens supporting frame comprising two supporting frames movable in directions orthogonal to each other, a first of said two supporting frames having an aperture in which a second of said two supporting frames is supported;
• a sensor that detects a position of said correction optical system and that outputs positional data associated with said position;
• a driving system that include an actuator and a transmitting mechanism that transmits a motion of said actuator to said correction optical system, said driving system driving said correction optical system along a predetermined axis on a plane perpendicular to an optical axis of said correction optical system;
• and
• a controller that controls said driving system such that a difference between said amount of said optical device tremble detected by said detector and said positional data of said correction optical system detected by said sensor is canceled;
• wherein, when said correction optical system is moved in a moving direction opposite a previous moving direction in which said correction optical system was previously moved, said controller controls said driving system such that a backlash of said transmitting mechanism and said difference is canceled.