Patent ID: 7746582

Claim:
A lens module comprising: a base comprising: at least one first positioning member; and a hollow body, wherein a receiving hole is defined in the hollow body; a ledge is formed in the receiving hole; a rotating component comprising an annular first rotating barrel, wherein an inner screw thread is formed on the inner wall of the first rotating barrel; the first rotating barrel is received in the receiving hole and contacts the ledge; a positioning component being positioned on the base and configured for restricting the rotating barrel to be in continuous contact with the ledge, wherein a center hole is defined in a center portion of the positioning component; and a lens barrel having an axis, the lens barrel comprising: a main body passing through the center hole of the positioning component, wherein an outer screw thread is formed on the main body and engages with the inner screw thread; and at least one second positioning member engaging with the at least one first positioning member and configured for guiding the lens barrel to move along the axis.