| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positioning device that virtually determines the position of first and second movable objects in a common operating zone. <P>SOLUTION: A positioning device comprises a first coil assembly arranged next to the operating zone, a second coil assembly arranged on the opposite side of the operating zone, one or more first magnets arranged on the first movable object that work together with the first coil assembly, and one or more second magnets arranged on the second movable object that work together with the second coil assembly. <P>COPYRIGHT: (C)2008,JPO&INPIT |
