Actuator and optical unit

An actuator capable of connecting with a lens unit and a sensor unit, the actuator comprising:

• a movable body which is connected with the lens unit and the sensor unit and has a first face and a second face, which face each other and are parallel to an optical axis direction, and a third face and a fourth face which face each other and are parallel to the optical axis direction and perpendicular to the first face and the second face;
• a fixed body which holds the movable body in a turnable state with at least one of intersecting directions intersecting the optical axis direction as a turning axis:
• a gimbal mechanism which comprises:
• a turnable member which has a base plate in a frame shape into which the movable body is inserted, and a plurality of leg parts which are extended from the base plate along the optical axis direction;
• and
• support parts which are engaged with the leg parts and support the leg parts in a turnable state;
• and
• a drive mechanism which comprises magnets, coils and a flexible board connecting the coils with each other and generates a drive force for turning the movable body with respect to the fixed body;
• wherein the drive mechanism comprises:
• as the magnets, a first magnet disposed on the first face, a second magnet disposed on the second face, a third magnet disposed on the third face, and a fourth magnet disposed on the fourth face;
• as the coils, a first coil disposed on a face of the fixed body facing the first magnet, a second coil disposed on a face of the fixed body facing the second magnet, a third coil disposed on a face of the fixed body facing the third magnet, and a fourth coil disposed on a face of the fixed body facing the fourth magnet;
• and
• as the flexible board, a first flexible board connecting the first coil with the third coil, a second flexible board connecting the third coil with the second coil, and a third flexible board connecting the second coil with the fourth coil;
• and
• the support part of the gimbal mechanism is provided at two positions in the fixed body on an extension line of a first straight line which is extended from a position between the first face and the third face to a position between the second face and the fourth face when viewed in the optical axis direction, and at two positions in the movable body on an extension line of a second straight line which is extended from a position between the first face and the fourth face to a position between the second face and the third face when viewed in the optical axis direction.