Patent ID: 9256044
Filing Date: 2016-02-09
CPC Classification: G02B

Claim Text:
1. A lens driving device, comprising: a lens support for retaining a lens; a box body; spring components for suspending the lens support on the box body and enabling the lens support to move along the Z axis direction as the direction of the optical axis of the lens; and an electromagnetic driving mechanism for driving the lens support to move along the Z axis direction; wherein each spring component comprises: an inner side retaining part installed on the lens support; an outer side retaining part installed on the box body; a plurality of wrist parts, configured between the inner side retaining part and the outer side retaining part and prolonged in one or both of a circumference direction and a radial direction; a plurality of inner side connecting parts, extending from the inner side retaining part to the plurality of wrist parts respectively and each configured for connecting one end of a corresponding one of the plurality of wrist parts with the inner side retaining part; a plurality of outer side connecting parts, extending from the outer side retaining part to the plurality of wrist parts respectively and each configured for connecting the other end of a corresponding one of the plurality of wrist parts with the outer side retaining part; and a plurality of necking parts, formed on first roots and/or second roots; wherein each first root is a root of a connecting part, connected with one of the plurality of inner side connecting parts, of the inner side retaining part; the second root is a root of a connecting part, connected with one of the plurality of outer side connecting parts, of the outer side retaining part; a width of each necking part is smaller than that of the wrist part; the electromagnetic driving mechanism receives an acting force at the back of the Z axis on the side opposite to the side of an object to be shot at an initial state as the state before operation.