| CPC G03B 5/00 (2013.01) [G03B 17/12 (2013.01); G03B 2205/0069 (2013.01)] | 19 Claims |
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1. A lens drive device, comprising:
a base;
a support frame, suspended on the base;
a lens holder, suspended in the support frame and configured to mount a lens;
a pair of upper elastic sheets, mutually insulated from each other, wherein each of the pair of upper elastic sheets comprises a first upper arm fixed on a side of the lens holder away from the base, a second upper arm fixed on a side of the support frame away from the base, and an upper elastic arm connecting the first upper arm to the second upper arm;
a conductive support piece, wherein the conductive support piece is arranged at two opposite ends of each of the pair of upper elastic sheets, the conductive support piece comprises an elastic piece and a suspension wire, the elastic piece comprises a holding portion fixed on a side of the second upper arm away from the support frame and electrically connected to the second upper arm, a fixing portion spaced from the support frame in a direction perpendicular to an optical axis, and an elastic portion that connects the holding portion to the fixing portion and can be elastically deformed in a direction along the optical axis and the direction perpendicular to the optical axis; the suspension wire connects the fixing portion to the base;
a drive coil, fixed on an outer side of the lens holder and electrically connected to a pair of the first upper arms, respectively;
a drive magnetic steel, fixed on the support frame and electric field coupled with the drive coil to drive the lens holder to move in the direction along the optical axis;
an image stabilization coil, electric field coupled with the drive magnetic steel to drive the lens holder to move in the direction perpendicular to the optical axis.
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