| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical pickup which has advantage in reducing the size and the cost while correcting aberration, and to provide an optical disk device. <P>SOLUTION: A collimator lens 18 is arranged so that a distance d1 from a light source matches with the focal distance of the collimator lens 18. In other words, the focal distance of the collimator lens 18 must be secured between the light source and the collimator lens 18. The distance d1, i.e., the distance d1 between an integrated optical element 12 and the collimator lens 18 is made greater than a size d0 of an aberration correcting element 14 along its thickness direction. In this embodiment, attention is paid to the distance d1 and the aberration correcting element 14 is arranged in the optical path which connects the integrated optical element 12 and the collimator lens 18. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
