| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical pickup device which is made thin and of which the assembly man-hour is reduced. <P>SOLUTION: In the optical pickup device in which a laser beam emitted from a semiconductor laser LD is converged on a signal recording plane of an optical disk "Disc" through a polarization optical system and return light from the signal recording plane is detected by an optical detector PD through the polarization optical system, a film-forming member controlling phase difference for incident light of the laser beam is provided in at least one side of the base material of a reflecting mirror MIR and of a beam splitter BS included in the polarization optical system. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
