<p>A lens actuator which is thin, which is less likely to cause displacement of the position of a lens relative to the optical axis, and which provides a great amount of displacement for the amount of displacement of a drive source. A lens actuator having an annularly mounted lever type displacement enlarging mechanism has a structure in which those ends of the lever type displacement enlarging mechanism which are connected through a lever section are provided so as to face and cross a piezoelectric element which is a drive source. The construction minimizes a tilt of a lens when the lens is driven and allows the entire structure of the actuator to be thin.</p>
