Patent ID: 7400463

Claim:
A miniature lens focusing mechanism, comprising: a displaceable lens holder for holding a lens therein; said displaceable lens holder having a protruding section; at least one polygonally contoured winding element surrounding the lens holder; wherein said polygonally contoured winding element providing for limitation of torsional forces on the displaceable lens holder; whereby when the lens is turned inside the displaceable lens holder, a turning angle of the lens with respect to the displaceable lens holder is limited by said polygonally contoured winding element; at least one elastic element connected to the displaceable lens holder and the polygonally contoured winding element; wherein a downward force is directed to a portion of the elastic element contacting the protruding section of the displaceable lens holder thereby maintaining the displaceable lens holder in an initial position; and at least one magnetic element fixedly secured to an outer ring member, said polygonally contoured winding element being mounted internal said outer ring member; whereby when a current is supplied, the current is transmitted via the at least one elastic element to the at least one polygonally contoured winding element, so that a displacement force is produced between the polygonally contoured winding element and the magnetic element to displace the displaceable lens holder and accordingly for focusing said lens.