Lens drive device

Details Lens drive device Lens drive device

2009-12-14

2011-10-18

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With support

C359S823000

Reexamination Certificate

active

08040620

ABSTRACT:
A lens drive device may include a movable body provided with a lens and a drive mechanism for driving the movable body in the optical axis direction. The drive mechanism may include a substantially triangular prism-shaped drive magnet part disposed in at least one of four corners of the lens drive device, and a drive coil wound around a substantially triangular tube shape and whose inner peripheral face is oppositely disposed to an outer peripheral face of the drive magnet part through a gap space. In at least another embodiment, a lens drive device may include a flat spring provided with a plurality of arm parts which connect a movable body fixed part with a fixed body fixed part. The arm part is formed with a low spring constant part whose spring constant is smaller than a spring constant of other portion of the arm part.

REFERENCES:
patent: 6064128 (2000-05-01), Yagoto et al.
patent: 7639440 (2009-12-01), Ishizawa et al.
patent: 2008/0074759 (2008-03-01), Yamano
patent: 2008/0297642 (2008-12-01), Osaka
patent: 2010/0315111 (2010-12-01), Fan et al.
patent: 2008-58659 (2008-03-01), None

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