OPTICAL PICKUP DEVICE HAVING OPTICAL ELEMENT EXHIBITING POLARIZED LIGHT SELECTIVITY LOADED THEREON AND OPTICAL APPARATUS HAVING THE OPTICAL PICKUP DEVICE LOADED THEREON

摘要

An optical pickup device having polarization selectiveoptical components on its light path for splitting the incidentlight into plural light beams having different polarized statesfor generating a variety of error signals based upon the pluralsplit light beams, and an optical apparatus on which is mountedthe optical pickup device.