| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pickup device for optimally adjusting each of tilts of a plurality of objective lenses with a simpler configuration to correct each coma aberration, and to provide a coma aberration correction method, etc. <P>SOLUTION: The optical pickup 1 is equipped with an actuator 10 with a plurality of objective lenses 11a and 11b mounted thereon. At least one objective lens not satisfying a sine condition is contained in the plurality of objective lenses so that coma aberration occurs depending on the tilt of incidence light. <P>COPYRIGHT: (C)2009,JPO&INPIT |
