Patent ID: 7474473
Filing Date: 2009-01-06
Classification: G02B

Abstract:
1. A protecting structure for movable mechanism in a miniature lens, the protecting structure being mounted in a housing of a focusing mechanism of the miniature lens and comprising: an upper cover defining a central opening and fixed in the housing of the miniature lens focusing mechanism; a lens holder for holding a lens therein; at least one elastic member connecting the lens holder to the upper cover, such that the lens holder is supported by the at least one elastic member to suspend in the housing to be axially displaceable forward and rearward for the purpose of focusing; and at least one protective member being received in the central opening of the upper cover to locate outside the elastic member relative to the lens holder for restricting the lens holder from moving laterally, and limiting a torsion force produced at the time of screwing a lens into the lens holder, so as to protect the elastic member against deformation due to the torsion force, wherein the upper cover is provided along the central opening with at least one notch, and the protective member is provided along an outer peripheral edge with at least one tongue corresponding to the at least one notch on the upper cover, so that the protective member is fixedly received in the central opening of the upper cover through engagement of the at least one tongue with the at least one notch to limit an extent within which the elastic member can be turned or laterally moved.