Patent ID: 8040621

Claim:
A miniature magnetic-levitated lens driving device, defined with a central axis and comprising: a casing having a hollow structure and formed therein with a receiving space; a lens module received in the receiving space and movable along the central axis within the casing; and a magnetic-levitated module provided in the receiving space and corresponding in position to the lens module, wherein the magnetic-levitated module further comprises: at least a first magnet, a plurality of second magnets, and a coil fixed to a periphery of the receiving space and an inner wall of the casing and disposed between said at least a first magnet and the plurality of second magnets; both the first magnet and the plurality of second magnets being magnets having two polarities; surfaces of the second magnets facing the first magnet at corresponding areas being presented to have the same polarity with the corresponding areas of the first magnet; the first magnet being coupled to the lens module and the plurality of second magnets corresponding in position to the first magnet so as for a magnetic repulsive force to be produced between the first magnet and the plurality of second magnets for magnetically suspending the lens module in the receiving space.