OPTICAL HEAD DEVICE USING ABERRATION CORRECTION DEVICE AND DISK DRIVE UNIT

摘要

An optical head device and a disk drive unit which reduce the weights of the moving units of the optical head device including an object lens, and achieve a more accurate aberration correction by separately driving the object lens and an aberration correction device. An optical head device (3) constituting a disk drive unit (1), wherein an aberration correction device (8) for an optical system including an object lens (6) is provided. In addition, a first drive means (7) for driving the object lens (6) and a second drive means (9) for driving moving units including the aberration correction device (8) or that device and constituting components (10) of the optical system are provided to thereby correct the positional deviation between the object lens (6) and the aberration correction device (8).