A camera module is provided, the camera module including a mover mounted with a lens, a stator movably supporting the mover to an optical axis direction of the lens, balls interposed at one side and the other side between the mover and the stator, a ball distance maintainer constantly keeping a distance between balls to a first direction, fixation means restricting a relative movement of the mover and the stator to a first direction, and permission means allowing a relative displacement of the mover and the stator to the first direction and restricting the relative displacement of the mover and the stator to a second direction.