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具有高推力光学拾取致动器的记录和/或再现设备
Recording and/or reproducing apparatus with an optical pickup actuator having high thrust
US-7453656-B2用于光盘驱动器的光学拾取致动器。
专利摘要
一种具有高推力光学拾取致动器的光学记录和/或再现设备。光学拾取致动器可以包括：透镜保持器，其保持物镜并由支撑单元可移动地支撑；以及磁驱动单元，其在聚焦方向、跟踪方向和/或倾斜方向上驱动透镜保持器。磁驱动单元包括表面三极磁体部分和线圈部分。表面三极磁体部分具有由三个磁体中的两个磁体的相对侧形成的多个极化（即不同磁化）区域。线圈部分包括设置成与表面三极磁体部分的极化区域相互作用的跟踪线圈和倾斜线圈，以及设置成与表面三极磁体部分的非极化区域相互作用的聚焦线圈。
Original abstractAn optical recording and/or reproducing apparatus with an optical pickup actuator having high thrust. The optical pickup actuator may include a lens holder which holds an objective lens and is movably supported by a supporting unit, and a magnetic driving unit which drives the lens holder in a focusing direction, a tracking direction, and/or a tilting direction. The magnetic driving unit includes a surface-triple pole magnet portion and a coil portion. The surface-triple pole magnet portion has a plurality of polarized, i.e., differently magnetized, areas formed by facing sides of two magnets among three magnets. The coil portion includes tracking coils and tilt coils disposed to interact with the polarized areas of the surface-triple pole magnet portion and a focusing coil disposed to interact with a non-polarized area of the surface-triple pole magnet portion.
专利附图（8）
来源状态与事件
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