| 摘要 |
An optical pickup device includes an objective lens holder having a pair of tracking coils and an objective lens fixed thereto, and a pair of magnets. The pair of tracking coils are rectangular or square in geometry. When the objective lens is not displaced in a tracking direction, one tracking coil has a vertical portion closer to a centerline, which passes through the pair of magnets at their respective centers, at a position distant from the centerline in a positive direction of rotation by a prescribed angle theta and the other tracking coil has a vertical portion closer to the centerline at a position distant from the centerline in a negative direction of rotation by the prescribed angle theta.
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