| 摘要 |
An optical pickup apparatus includes a movable unit with an objective lens, a focus servo coil for moving the objective lens in the optical-axis direction, and tracking servo coils for moving the objective lens in the horizontal directions. Furthermore, a liquid crystal element is disposed for correcting the refractive index. Power feeding to the liquid crystal element and support for the movable unit are provided simultaneously by springs. Two sheets each having four springs extending across an opening on the sheet are disposed parallel to each other at a predetermined distance. On these sheets, a fixed unit and a movable unit are formed by insert-molding. Then, an objective lens, a focus servo coil, tracking servo coils, and a liquid crystal element are mounted on the movable unit.
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