Lens drive device

Details Lens drive device Lens drive device

2011-03-25

2011-10-18

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With support

C359S814000, C359S694000, C359S696000, C396S133000

Reexamination Certificate

active

08040624

ABSTRACT:
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.

REFERENCES:
patent: 7518812 (2009-04-01), Sue et al.
patent: 7751134 (2010-07-01), Sata et al.
patent: 7916412 (2011-03-01), Li et al.
patent: 2010/0060999 (2010-03-01), Higuchi
patent: 2010/0149668 (2010-06-01), Wade et al.
patent: 2009-198948 (2009-09-01), None

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