Patent ID: 7925146

Claim:
An image blur correction device, comprising: a base; an optical component that is inserted in an optical system; a holder that holds the optical component and is supported by one or more balls so as to be freely displaced by sliding on the base; and an actuator that displaces the holder on the base, wherein the holder has one of a protrusion and a concave portion near a housing position for the one or more balls, the base has the other of the protrusion and the concave portion at a position that is outside a mobile range of the one or more balls and that faces the protrusion or the concave portion, a height of the protrusion is lower than the space between the holder, which is elevated from the base by the insertion of the one or more balls, and the base, and inner dimensions of the concave portion and outer dimensions of the protrusion are set so that a mobile range of the protrusion fitted in the concave portion becomes smaller than a mobile range of the holder.