<p>In an optical head, a light beam emitted from a semiconductor laser is guided to a carrier through a collimator lens and a beam splitter. An objective lens (4) movable along an optical axis and a mirror (41) having a oval reflecting surface are mounted on a carrier (50) which is movable along a radial direction of an optical disk. The guided light beam is reflected from the mirror (41) to the objective lens (4) and is converged on the optical disk by the objective lens (4). The rear surface of the mirror (41) is bonded to an adjusting member (15) on a straight line which pass through the center gravity of the mirror (41) and extends along the movable direction of the carrier (50). <IMAGE></p>