| 摘要 |
PURPOSE:To make a magnetic field generating means small-sized by supporting a lens on a base by an expansible and contractible elastic supporting means and moving two coils, which drive the lens in the direction of the optical axis of the lens and in the direction orthogonal to the direction of the optical axis, as one body. CONSTITUTION:A lens 12 is attached to a cylindrically flanged lens frame 13 and the lens frame 13 is attached to a magnetic field generating means (magnet) 16 through springs 14 and dampers 15. Springs 14 are bent in the direction of the optical axis of the lens 12 and is expanded and contracted in the radial direction of the lens 12, and the lens frame 13 can be moved in the direction of the optical axis and the radial direction. A coil bobbin 17 is attached to the lens frame 13, and four coils 18-21 are provided on the surface of the bobbin 17, and the bobbin 17 can be moved in the direction orthogonal to the optical axis and can be driven in the direction of the optical axis by a coil 22 wound on coils 18-21. |
