Patent ID: 7859755

Claim:
A lens module, comprising: a base unit having a first through hole therein, the first through hole having a first tapered portion; a first lens unit having a first central optical portion and a first peripheral portion surrounding the first central optical portion, the first peripheral portion having a second tapered portion and a third tapered portion at opposite sides thereof, the second and third tapered portions tapering in opposite directions, the second tapered portion engaged in the first tapered portion of the first through hole of the base unit; a spacer unit having a second through hole therein, the second through hole having a fourth tapered portion and a fifth tapered portion at opposite sides thereof, the fourth and fifth tapered portions tapering in opposite directions, the fourth tapered portion of the second through hole engaged with the third tapered portion of the first lens unit; a second lens unit having a second central optical portion and a second peripheral portion surrounding the second central optical portion, the second peripheral portion having a sixth tapered portion, the sixth tapered portion engaged in the fifth tapered portion of the second through hole of the spacer unit; and a cap unit having a light incident opening, the cap unit engaged with the second lens unit.