| 摘要 |
An optical pickup device includes an objective lens ( 1 ) for focusing a light flux onto an information layer of a disk-shaped medium, an objective lens driving unit that drives the objective lens ( 1 ) in a focus servo direction and in a tracking servo direction, a correction lens ( 14 ) disposed on the same optical axis as the objective lens ( 1 ), and a correction lens driving unit that drives the correction lens ( 14 ) in the same direction as the focus servo direction to control the condition of the light flux incident on the objective lens.
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