Patent ID: 7916210

Claim:
A driving device for driving a moving part, comprising: a body member; a first member which is made of a shape memory alloy wire having a diameter of no less than 10 μm and no more than 80 μm, is expandable and contractable, and is extended between the body member and the moving part; a second member which is expandable and contractable and is arranged between the body member and the moving part such that the second member biases the first member so as to generate a tensile force in the first member and expand the first member; a measurement section which obtains a measurement value related to driving of the moving part having been driven by the first member and the second member; and a control section which controls the driving of the moving part by supplying a voltage to the first member on the basis of a deviation of the measurement value from a driving target value related to the driving of the moving part; wherein, when a voltage is supplied to the first member, the first member contracts itself and moves the moving part in a first direction, and when the voltage supplied to the first member is reduced, the first member is expanded by the tensile force applied by second member so as to move the moving part in a second direction different from the first direction.