Lens drive device

Details Lens drive device Lens drive device

2011-08-23

2011-08-23

Stultz, Jessica T (Department: 2873)

Optical: systems and elements

Lens

With support

C359S822000, C359S694000

Reexamination Certificate

active

08004779

ABSTRACT:
A lens drive device may include a movable body having a lens and a coil, a support body movably supporting the movable body, a magnetic drive mechanism having a magnet for driving the movable body together with the coil, a restricting member for restricting movement of the movable body due to an electromagnetic force generated when an electric current is supplied to the coil, a magnetic member disposed in the movable body to be magnetically attracted by the magnet. In a non-energized state where the coil is not energized, following relationships are satisfied:W>F1, W>F2, and W<F1+F2.wherein a force with which the restricting member urges the movable body toward a non-energized position is “F1”; a force in the optical axis direction with which the magnetic member is attracted by the magnet is “F2”; and a weight of the entire movable body is “W”.

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patent: 2005-165058 (2005-06-01), None
patent: 2007-148354 (2007-06-01), None

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