Patent ID: 7551374

Claim:
A suspension apparatus for auto-focus lens device, comprising: a lens holder for positioning a lens unit; a supporting base formed with an opening for accommodate the lens holder; and at least a suspension spring comprising a base positioning end, a lens holder positioning end, and at least a connecting member situated therebetween; said connecting member providing the reposition elasticity between base positioning end and lens holder positioning end; wherein the lens holder is adjoined to the lens holder position end and the supporting base is adjoined to the base positioning end, wherein at least a drive coils are disposed on the periphery of lens holder, and at least a permanent magnet set is arranged on supporting base at the location corresponding to said drive coils, wherein said permanent magnet set includes at least a first magnet and a second magnet stacked together with opposing poles so that the poles of first magnet and the second magnet facing the lens barrel are opposite to each other; as such, the upper half and the lower half of said permanent magnet set facing the lens barrel have opposing poles, wherein when direct current is applied to said drive coils, the current directions of coils facing the first magnet and the second magnet are opposite to each other.