Patent ID: 8495761

Claim:
A planar positioning device comprising: a first actuator displaceable in a direction of a first axis; a second actuator displaceable in a direction of a second axis perpendicular to the first axis; a first displacement magnifying mechanism configured to magnify a displacement of the first actuator in the first-axis direction; a second displacement magnifying mechanism configured to magnify a displacement of the second actuator in the second-axis direction; a stage arranged in a plane parallel to the first axis and the second axis; a first drive support mechanism comprising a parallel link connected between the first displacement magnifying mechanism and the stage to extend in the first-axis direction, supporting the stage in the plane, and configured to transmit the displacement in the first-axis direction, magnified by the first displacement magnifying mechanism, to the stage; a second drive support mechanism comprising a parallel link connected between the second displacement magnifying mechanism and the stage to extend in the second-axis direction, supporting the stage in the plane, and configured to transmit the displacement in the second-axis direction, magnified by the second displacement magnifying mechanism, to the stage; and a stabilizing support mechanism supporting the stage and configured to apply tensions in the first-axis direction and the second-axis direction to the stage.