| 摘要 |
An optical disk drive (10) has a plurality of optical disks rotatably supported about an axis. The disk drive includes a switching apparatus having at least one movable mirror (24, 26) which changes its orientation to direct a light beam toward a plurality of read/write head members (16). Each head member has a head mirror (30) and a read/write objective lens (32) for directing the light beam to an optical disk.
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