Resonance drive actuator, microscanner, and optical apparatus

In the present invention, an optical scanner (10) is provided with a mirror (11) that is driven by resonance, and has at least two resonance motors that can be utilized in the driving of the mirror (11). Also, the mirror (11) is subjected to resonance driving by the frequency of the resonance motors that are functioning. As a result, it is possible to stably drive the mirror (11) even if there are assembly variations.