Magnetic coupling lens driving actuator

Details Magnetic coupling lens driving actuator Magnetic coupling lens driving actuator

2011-06-14

2011-06-14

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With support

C359S819000, C359S822000

Reexamination Certificate

active

07961414

ABSTRACT:
A magnetic coupling lens driving actuator includes an imaging element; a movable lens that is movable in a direction of an optic axis; a magnetic body that is coupled to the movable lens; a lens tube that encases and airtightly seals the imaging element, the movable lens, and the magnetic body; a magnetic field producing unit that is disposed on an outer surface of the lens tube and that is movable in the direction of the optic axis; and a wire member that has one end thereof attached to the magnetic field producing unit, and that is operative to move the magnetic field producing unit in the direction of the optic axis. The magnetic field producing unit includes two magnetic field producing members disposed with a predetermined gap therebetween in the direction of the optic axis, the magnetic body is disposed opposed to the predetermined gap within the lens tube, and the movable lens is moved by any one of deformation and movement of the wire member.

REFERENCES:
patent: 7511905 (2009-03-01), Matsuki et al.
patent: 7667906 (2010-02-01), Tsai
patent: 2008-194326 (2008-08-01), None

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