Patent ID: 7817908

Claim:
An image stabilizer for correcting a position on a surface of a rectangular imaging device where light rays reflected from an object are focused, the image stabilizer comprising: a fixed member that includes a first actuator including a piezoelectric element having as a whole an elongated shape, the fixed member being arranged near a first side of the imaging device in parallel with a direction of the first side; a first movable member that includes a second actuator including a piezoelectric element having as a whole an elongated shape, the first movable member being arranged near a second side of the imaging device perpendicular to the first side in parallel with a direction of the second side, the first movable member moving, when driven by the first actuator, in the direction of the first side on the fixed member; a second movable member that is mounted with the imaging device and moves, when driven by the second actuator, in the direction of the second side on the first movable member; and a position sensor that detects a relative position of the imaging device moved by at least one of the first actuator and the second actuator, wherein the first actuator is located near a virtual intersection of a longitudinal axis of the first actuator and a longitudinal axis of the second actuator not to interfere with the second actuator, the second actuator is located near the virtual intersection not to interfere with the first actuator, and the position sensor is located in a region that is partly surrounded by an edge of the first actuator and the second actuator and that includes the virtual intersection, wherein at least one of a plurality of hall elements is located on each of an X axis corresponding to the direction of the first side and a Y axis corresponding to the direction of the second side, and a magnet has a magnetic pole on each face in an optical axis direction, and when each of the first movable member and the second movable member is located at a reference position where a travel distance of the movable member is zero, a center of magnetic field lines of the magnet substantially matches a center of the X axis and the Y axis, and the center of the magnetic field lines of the magnet is a magnetic flux density maximum point.