Patent ID: 8179750

Claim:
An optical pickup device comprising: a plurality of laser light sources emitting laser beams of different oscillation wavelengths; a plurality of objective lenses on which the laser beams in the form of diverging beams emitted by the plurality of laser light sources are incident, the plurality of objective lenses directly focusing the respective laser beams onto a recording surface of an optical disc, and a raising mirror that reflects a laser beam in the form of a diverging beam emitted by a laser light source of a predetermined oscillation wavelength among the plurality of laser light sources so as to lead the laser beam to one of the plurality of objective lenses, and transmits a laser beam in the form of a diverging beam emitted by another laser light source, wherein, as the raising mirror transmits the laser beam in the form of the diverging beam emitted by said another laser light source, the raising mirror gives astigmatism to the laser beam so as to correct existing astigmatism of the laser beam emitted by said another laser light source, and wherein, as the raising mirror reflects the laser beam in the form of the diverging beam emitted by said laser light source of said predetermined oscillation wavelength, the raising mirror gives no astigmatism to the laser beam.