Lens barrel, camera, imaging apparatus, and coil component

A lens barrel comprising:

• a lens;
• a printed-wiring board located on an outside of the lens as viewed in a first direction in which an optical axis of the lens extends, the printed-wiring board including a first principal surface on an object side in the first direction and a second principal surface on an imaging plane side in the first direction;
• a coil component including a winding portion and a core portion, the coil component being mounted on the first principal surface of the printed-wiring board;
• and
• a drive circuit configured to supply an alternating current to a load via the coil component,
• wherein the core portion includes:
• a first winding core portion and a second winding core portion located with a gap therebetween in an axial direction in which the first and second winding core portions extend, the winding portion being wound around the first winding core portion and the second winding core portion;
• a first magnetic outer wall located in the axial direction and configured to hold the first winding core portion, and a second magnetic outer wall located in the axial direction and configured to hold the second winding core portion;
• and
• a third magnetic outer wall configured to be held by the first magnetic outer wall and the second magnetic outer wall,
• wherein the first winding core portion and the second winding core portion are located between the third magnetic outer wall and the first principal surface, and
• wherein a number of turns of the winding portion around the first winding core portion with respect to the gap is smaller than a number of turns of the winding portion around the second winding core portion with respect to the gap, the winding portion with the smaller number of turns around the first winding core portion is oriented towards the optical axis, and the first winding core portion is located on a side closer to the optical axis than the second winding core portion.