| 摘要 |
An objective lens drive device includes an objective lens, a lens holder having a lens holding part for holding the objective lens on one side end part of the lens holder, a focusing and tracking drive mechanism, and a tilt drive mechanism. The focusing and tracking drive mechanism and the tilt drive mechanism are disposed so as to be separated from each other in a longitudinal direction which is from the one side end part of the lens holder to the other side end part of the lens holder. More specifically, the tracking drive mechanism is disposed on the tilt drive mechanism side and the focusing drive mechanism is disposed on an opposite side to the tilt drive mechanism with the tracking drive mechanism interposing therebetween.
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