Patent ID: 8320065
Filing Date: 2012-11-27
Classification: G02B

Abstract:
1. An lens driving device, comprising: a base; a lens holder mounted on the base and defining a core member, a connecting portion extending from one end of the core member, and at least a pair of supporting elements extending upwardly from the connecting portion and setting in space with respect to core member; a movable cover opposite to the supporting elements; a elastic supporting portion received in the lens holder and engaged with the movable cover; a coil attached on the lens holder; and a permanent magnet attached on the lens holder and interacted with the coil for generating a magnetic force to drive the lens holder to move along a central axis of the core member; Wherein, the elastic supporting portion defines an elastic force which is more than a weight of the movable cover but not more than the resultant of the weight of the movable cover and the magnetic force; the lens driving device further defines a movable distance between an upper surface of the supporting elements and a first surface of the movable cover.