Lens module

A lens module, comprising:

• a base having a bottom, the bottom having a plurality of bumps;
• a sleeve disposed on the bumps and having a plurality of step portions, wherein each of the step portions comprises a plurality of steps, and a difference of height is disposed between each two steps, and each of the bumps is in contact with one of the steps of the corresponding step portion;
• a lens disposed in the sleeve;
• a magnet set disposed in the base and beside the sleeve, two ends of the magnet set having a distance away from the bottom respectively, wherein the magnet set comprises:
• a first magnet having a first end and an opposite second end;
• and
• a second magnet having a third end and an opposite fourth end, the first end being connected to the third end, the second and the fourth end being respectively connected to the base, wherein the magnetic pole of the first end and the third end is a first magnetic pole, and the magnetic pole of the second end and the fourth end is a second magnetic pole;
• a coil supporter having two opposite holes, the magnet set being inserted into the holes, wherein the coil supporter is coupled to the sleeve;
• and
• a coil disposed between the holes, the magnet set being inserted into the coil, wherein when a current is passed through the coil, the electromagnetic force produced between the coil and the magnet set moves the coil along the magnet set, so as to push the coil supporter and rotate the sleeve accordingly.