Actuator

An actuator, comprising:

• a movable body;
• a support body;
• a connecting body having at least one of elasticity and viscoelasticity, and disposed in contact with both the movable body and the support body in a position in which the movable body and the support body face each other;
• and
• a magnetic driving circuit comprising an air-core coil provided in a first member that is one of the movable body and the support body, and a first permanent magnet provided in a second member that is one of the movable body and the support body so as to face the coil on a first side in a first direction, the magnetic driving circuit causing the movable body to vibrate with respect to the support body in a second direction which intersects with the first direction, wherein
• the first member comprises a coil holder comprising a plate part such that a coil placement hole in which the coil is placed is formed through the plate part in the first direction, a first plate that overlaps the coil placement hole and the plate part from the first side in the first direction, and an adhesive layer with which at least an air-core portion of the coil is filled to fix the coil to the first plate and the plate part,
• the coil faces the first permanent magnet via the first plate, and
• a recessed part which is a reservoir of the adhesive layer is formed in the plate part.