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    • 9. 发明授权
    • Lens drive device
    • 镜头驱动装置
    • US08040624B1
    • 2011-10-18
    • US13071706
    • 2011-03-25
    • Kiyoshi MiyazakiTatsuki Wade
    • Kiyoshi MiyazakiTatsuki Wade
    • G02B7/02G02B15/14
    • G02B7/08H02K41/0356
    • A lens drive device for use with at least one lens may include a movable body holding a lens, a fixed body movably holding the movable body, and a drive mechanism for driving the movable body in the optical axis direction. The drive mechanism may include a drive coil fixed to the movable body and a plurality of drive magnets which is fixed to the fixed body and magnetized so that magnetic poles are different from each other in the optical axis direction. The fixed body may include an outer peripheral side magnetic member and an end face side magnetic member and an inner peripheral face of the outer peripheral side magnetic member and a side face of the drive magnet are faced each other through a predetermined space. The drive coil is disposed between the drive magnet and the inner peripheral face of the outer peripheral side magnetic member.
    • 用于至少一个透镜的透镜驱动装置可以包括保持透镜的可移动体,可移动地保持可移动体的固定体和用于在光轴方向上驱动可移动体的驱动机构。 驱动机构可以包括固定到可移动体的驱动线圈和固定到固定体并被磁化的多个驱动磁体,使得磁极在光轴方向上彼此不同。 固定体可以包括外周侧磁性构件和端面侧磁性构件以及外周侧磁性构件的内周面和驱动磁体的侧面彼此面对预定空间。 驱动线圈设置在驱动磁体和外周侧磁性部件的内周面之间。