| 摘要 |
PROBLEM TO BE SOLVED: To provide a camera-shake correction device that can provide accurate positional information of a permanent magnet by eliminating the influence of an excitation field by a coil for oscillation, and does not cause the reduction in oscillation force. ! SOLUTION: An oscillation signal generated by a drive circuit 22 is transmitted as an oscillation current to an X-side coil 15x for oscillation, and the oscillation signal is supplied to an adjustment circuit 23. An adjustment output obtained by adjusting the amplitude and phase of the oscillation signal with the adjustment circuit 23 is added to a hall output of an X-side hall element 161, and the excitation field component from a +X-side coil 151 for oscillation is cancelled. ! COPYRIGHT: (C)2015,JPO&INPIT |
