Patent ID: 8089553

Claim:
A lens drive device holding at least one lens moveably along an optical axis, the lens drive device comprising: a drive section to drive the lens; an acceleration detection section to detect an acceleration; and an output control section to control an output of the drive section corresponding to the acceleration detected by the acceleration detection section, wherein the drive section includes a motor to drive the lens, and the output control section determines whether the acceleration detected by the acceleration detection section falls within a predetermined acceleration range or not, when the acceleration is determined to be within the range, a further determination of whether the lens drive device is in a stationary state is performed, and when it is determined not being in the stationary state, the motor is driven by a maximum drive voltage, while when it is determined being in the stationary state, a further determination of whether a posture is horizontal or not is performed, when being horizontal is determined, the motor is driven by a drive voltage appropriate for a horizontal posture, while when it is determined not being horizontal, a further determination is performed of whether to drive the motor in the gravity direction or in the direction opposite to the gravity direction, when it is determined to drive the motor in the gravity direction, the motor is driven by a lower voltage than the drive voltage appropriate for the horizontal posture, while when otherwise, the motor is driven by a voltage higher than the drive voltage appropriate for the horizontal posture and lower than the maximum drive voltage.