Patent ID: 7855606

Claim:
An oscillator device, comprising: an oscillation system including an oscillator and a resilient supporting member; a driving member configured to supply a driving force to said oscillation system based on a driving signal; a detecting member configured to detect at least an oscillation amplitude of said oscillator; a driving amplitude control unit configured to control at least a driving amplitude of the driving signal; and a driving frequency control unit configured to control a driving frequency of the driving signal to be supplied to said driving member; wherein, in a state in which said driving amplitude control unit controls the driving amplitude of a driving signal so that the oscillation amplitude to be detected becomes equal to a target value, and on the basis of information including driving frequencies in different driving states being driven with driving signals of these driving frequencies as well as the controlled driving amplitude, said driving frequency control unit acquires, as a resonance frequency of said oscillation system, a driving frequency with which the driving amplitude of the driving signal becomes minimal.