| 摘要 |
THE INVENTION REFERS TO A PICKUP (9) FOR OPTICAL RECORDING MEDIA HAVING INFORMATION TRACKS IN A LAYER, AND TO A DEVICE FOR ACCESSING OPTICAL RECORDING MEDIA HAVING SUCH PICKUP (9). THE PICKUP (9) HAS A FOCUSING SERVO FOR POSITION CONTROL IN A FOCUS DIRECTION (F) ORTHOGONAL TO THE LAVER, 10 AND A MOVABLE ACTUATOR (1) SUSPENDED BY SUSPENSION WIRES (3) WITH A FOCUSSING COIL DIVIDED INTO TWO PARTIAL COILS (41, 42) STACKED IN FOCUS DIRECTION (F) INTERACTING WITH A MAGNET (6). IN ORDER TO ALLOW FOR A MORE COMPACT DESIGN, A TOP PARTIAL COIL (41) IS LOCATED ABOVE THE TOPMOST 15 SUSPENSION WIRES (3).
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