A correction optical device comprises an OIS frame, and an OIS lock ring that restricts a movement of the OIS frame. The OIS lock ring rotates so that a position of a first protrusion reciprocates between a lock position and an unlock position. The first protrusion and the second protrusion are formed into such shapes that generate a component force acting on the first protrusion in a direction from the unlock position toward the lock position when a force causing the first protrusion and the second protrusion to push against each other is generated between the first protrusion and the second protrusion.