Patent ID: 7872395

Claim:
An actuator comprising: a first movable section including a mirror section for reflecting light; a second movable section supporting the first movable section; and a stationary section supporting the second movable section, wherein, the second movable section includes: a first conductive portion for applying a first voltage to the first movable section; a second conductive portion to which a second voltage is applied; and backlining for stabilizing the first conductive portion and the second conductive portion to each other from a face of the actuator opposite from a face on which the mirror section is provided, wherein an isolation trench is formed in the second movable section, the first conductive portion and the second conductive portion are electrically insulated from each other by the isolation trench, a dummy trench is formed in the second movable section, and at least a portion of the dummy trench is formed at a point symmetric position with respect to a center of the second movable section from the isolation trench in the second movable section.