| 摘要 |
PURPOSE:To omit a complicated winding machine and to reduce the cost of a lens driver by using square frame-shaped coils to constitute all of three sets of coils that drive a lens in the three dimensional direction. CONSTITUTION:An (x)-direction driving coil 4-4 wound roughly from the parallel direction to a lens axis and a (y)-direction driving coil 4-5 and a (z)-direction driving coil 4-1 wound roughly from the vertical direction to the lens axis are provided at the outside of a nonmagnetic coil bobbin 2 which holds a lens 1 by avoiding the lens 1. The driving parts of these coils are hanged by a spring 5, etc. so that they can freely move in three directions by the magnetic force within a magnetic flux gap 3 having a radial magnetic flux 6 to the lens axis. In such a way, the rough winding method is effective to all coils and the constitution of a winding machine is also simplified. Furthermore no fixing adhesive is needed since those coils are wound directly around bobbins. |
