Patent ID: 8027104

Claim:
A lens module comprising: a barrel comprising a first end, a second end opposite to the first end, and a cap formed at the first end, and defining a through hole bounded by an inner circumference surface thereof, the inner circumference surface substantially parallel to an optical axis of the lens module, and the inner circumference surface comprising at least one first circumference latching surface, the through hole extending from the first end to the second end, the cap defining an opening at the center thereof, and the diameter of the opening being smaller than that of the through hole; and at least one lens received in the barrel, the at least one lens comprising at least one second circumference latching surface, the at least one first circumference latching surface of the barrel surroundingly latching the at least one second circumference latching surface of the at least one lens, wherein, one of the at least one first circumference latching surface and the corresponding at least one second circumference latching surface is a ring-shaped concave surface, and the other is a ring-shaped convex surface latchable with the corresponding ring-shaped concave surface.