Driving device, lens barrel, and image capturing apparatus

摘要

Provided is a lens barrel includes a vibration actuator that drives a focusing lens which brings a subject image into focus; an amplifying section that applies a pair of driving signals amplified to the vibration actuator; a phase shifting section that changes a phase difference between the pair of the driving signals; and a control section that, when a signal for giving an instruction to drive the vibration actuator is input, executes a first processing of causing the phase shifting section to perform an operation which periodically changes the phase difference of the pair of the driving signals.

主权项

1. A lens barrel comprising:
a vibration actuator that drives at least one lens of a photographic optical system; an input section that inputs a set of driving signals to the vibration actuator; a phase shifting section that changes a phase difference of the set of driving signals; and a control section that executes first processing that causes the phase shifting section to perform an operation that reduces a magnitude of the phase difference while driving the lens in a first direction by the vibration actuator, and when a movement direction of the lens becomes a second direction, which is reversed with respect to the first direction, increases the magnitude of the phase difference while driving the lens in the second direction.