| 摘要 |
The lens driving device according to the present invention concentrates a light beam emitted by a light source and reflected by a mirror onto a recording layer of a recording medium by use of an objective lens and includes an objective lens holding section for holding the objective lens so that the objective lens is movable in an optical axis direction, and the objective lens holding section is shaped so that the objective lens holding section is prevented from touching the mirror when the objective lens is made closer to the mirror. As a result, it is possible to reduce a space necessary for preventing the objective lens holding section from touching the mirror, so that it is possible to provide the lens driving device which is made thinner.
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