Patent ID: 8139299

Claim:
A lens activating device, comprising: at least one first single-loop elastic piece having at least two pairs of alternatively and substantially symmetrically arranged sheet portions and elastic portions, wherein each pair of the sheet portions is diagonally arranged on the first single-loop elastic piece, wherein each elastic portion is of serpentine structure disposed between the two adjacent sheet portions, wherein the alternatively arranged elastic portions and sheet portions form a closed ring; at least one second single-loop elastic piece having at least two pairs of alternatively and substantially symmetrically arranged sheet portions and elastic portions, wherein each pair of the sheet portions is diagonally arranged on the second single-loop elastic piece, wherein each elastic portion is of serpentine structure disposed between two adjacent sheet portions, wherein the alternatively arranged elastic portions and sheet portions form a closed ring; a stationary piece arranged between the first and the second single-loop elastic pieces and connected to at least one pair of the respective diagonally arranged sheet portions; wherein the stationary piece has a fixing seat, the fixing seat having a base, a through-hole passing through the base, and two protrusions extending from opposite ends of the base; and a movable piece connected to at least one remaining pair of the diagonally arranged sheet portions of the first single-loop elastic piece and at least one remaining pair of the diagonally arranged sheet portions of the second single-loop elastic piece, wherein the movable piece has a lens assembly movably provided in the fixing seat; wherein one pair of the sheet portions of the first single-loop elastic piece contacts the corresponding protrusions of the fixing seat, and the other pair of the sheet portions of the first single-loop elastic piece contacts the top of the lens assembly, and wherein one pair of the sheet portions of the second single-loop elastic piece contacts the base, and the other pair of the sheet portions of the second single-loop elastic piece contacts the lens assembly.