| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide easy-to-manufacture driver and lens driver in which driving force can be enhanced while reducing the diameter. <P>SOLUTION: A motor comprises a stator yoke 1, a first coil 2A, a second coil 2B, a first magnet 3A, a second magnet 3B, a supporting bar 4, and a slider 5. The stator yoke 1 is formed of a soft magnetic material and supports the slider 5 movably in the axial direction. The first coil 2A and the second coil 2B are secured to the inner circumferential portion of the stator yoke 1 and excites the magnetic pole of the slider 5. The first magnet 3A is secured to the inner circumferential portion of the stator yoke 1 and has a magnetized portion extending along the spiral profile at the magnetic pole of the slider 5. The second magnet 3B is secured to the inner circumferential portion of the stator yoke 1 and has a magnetized portion extending along the spiral profile at the magnetic pole of the slider 5. The slider 5 is formed of a soft magnetic material and has a magnetized portion of spiral profile extending along the axial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
