| 摘要 |
In an optical disk apparatus, an objective lens 29 is suspended movably along its optical axis by diaphragm structures and mounted on a carrier. The carrier is movably mounted on guide rails by a pair of support structures. In each of the support structures, two pair of rollers are rotatably fixed on first and second blocks, respectively, which are fixed to both ends of a leaf spring. The center portion of the leaf spring is fixed to the side surface of the carrier and gaps are provided between both ends of the leaf spring and the side surface of the carrier.
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