| 摘要 |
PROBLEM TO BE SOLVED: To dispense with an accurate tuning operation in compensating an angular velocity of a scanning angle or a rotational angle in an oscillator device such as a resonance optical deflector. SOLUTION: The oscillator device constituting a resonance optical deflector or the like is equipped with: supporting means 102, 103 which rotatably support an oscillator 101 in a range with a neutral position as the center around a nearly prescribed rotary shaft; restoring torque generating means 102, 104, 105, 108 which generate a restoring torque T in a direction returning the oscillator 101 to the neutral position; and driving means 106, 107, 108 which drive the oscillator 101 in a manner rotating and oscillating it with the neutral position as the center around the rotary shaft. The device has a nonlinear characteristic in which dT/dθis smaller when the restoring torque T is monotonically decreases relative to displacement angle of arcθfrom the neutral position of the oscillator 101, and in addition when the absolute value of the displacement angle becomes larger. COPYRIGHT: (C)2007,JPO&INPIT
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