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1. 发明公开

EP1473715A4 OPTICAL HEAD 审中-公开
标题翻译： OPTISCHER KOPF
公开(公告)号：EP1473715A4
公开(公告)日：2007-07-25
申请号：EP03703254
申请日：2003-02-07
申请人： SONY CORP
发明人： IIDA ATSUSHI , WATANABE TOSHIO , TANASE HIRONOBU , YAMAMOTO KENJI , HASHIMOTO GAKUJI
IPC分类号： G11B7/09
CPC分类号： G11B7/13925 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/1369
摘要： An optical head enabling a size reduction so that the optical head can be stored in an opening of a cartridge for a disk and enabling an improvement in the dynamic performance as the density and transfer rate are increased is provided. In a two-axis actuator optical head capable of driving an objective lens (102) along the Z axis in the focus direction, that is, vertical to the surface of the optical disk and along the X axis in the tracking direction, that is, the radial direction of the optical disk. The objective lens (102) is disposed in the center of the coil bobbin (101), a focusing coil (103) is disposed around the coil bobbin (101) and is wound around the X axis, and tracking coils (104a and 104b) are disposed on both ends of the coil bobbin (101) in the X axis direction and are wound around the X axis. Pairs of magnets (107a to 107d) are disposed plane-symmetrically with the Z-Y plane including the Z axis aligned with the optical axis of the objective lens (102) and the Y axis and with the Z-X plane including the Z axis and the X axis.
摘要翻译：本发明的目的在于提供一种小型化的光学头，其尺寸足以容纳在磁盘盒的开口中，并具有适应高密度和高传输速率的增强的动态性能。光学头是双轴致动器系统，其中物镜（102）沿平行于垂直于光盘的聚焦方向的Z轴以及平行于作为径向的跟踪方向的X轴被驱动光盘。物镜（102）设置在线圈架（101）的中心。一个聚焦线圈（103）围绕线圈架（101）上的Z轴提供。在线圈架（101）的X轴两端，在绕线架（101）的X轴周围设置有跟踪线圈（104a，104b）。磁体（107a至107d）相对于包括平行于物镜（102）的光轴和Y轴的Z轴的ZY平面以及相对于包括Z轴的ZX平面轴和X轴。

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