An optical head device includes a focusing optical system for focusing a
laser beam emitted from a semiconductor laser light source on an optical
information medium with an objective lens. A chromatic aberration
correction element for correcting chromatic aberration occurring in the
objective lens is provided between the semiconductor laser light source
and the optical information medium. A light distribution correction
element in which the transmittance increases with the distance from the
center of the aperture surface of the objective lens is provided so as to
correct a reduction of the intensity of the light incident on the
aperture surface of the objective lens with the distance from the center
of the aperture surface.