To provide an optical pickup with an objective lens which focuses the laser beam on the signal recording layer of an optical disk different in specifications.

An objective lens L focuses the laser beam on the signal recording layer of an optical disk D. A laser beam incident surface is divided concentrically from the optical axis toward the outside into an inner lens area LC and an outer lens area LO. The numerical aperture of the inner lens area LC is set larger than that of the outer lens area LO.