Patent ID: 8159734
Filing Date: 2012-04-17
Classification: G02B

Abstract:
1. An oscillator device, comprising: a supporting member; an oscillation system including at least a first oscillator, a second oscillator, a first torsion spring configured to connect the first and second oscillators with each other, a second torsion spring connected to the second oscillator and having a torsional axis aligned with a torsional axis of the first torsion spring; a driving device configured to oscillate the first oscillator and the second oscillator about the first and second torsional axes; a drive control device configured to control said driving device; an oscillation detecting device configured to detect a state of oscillation of at least one of the first oscillator and the second oscillator; a resonance frequency calculating device configured to calculate a resonance frequency of said oscillation system based on an output of said oscillation detecting device; and a control parameter adjusting device configured to adjust a control parameter of said drive control device, wherein said drive control device supplies a driving signal to said driving device so that at least one of the first oscillator and the second oscillator is brought into a state of oscillation which can be represented by an equation including at least a term A wherein said control parameter adjusting device adjusts the control parameter based on an output of said resonance frequency calculating device, and wherein A