Patent ID: 8363341

Claim:
A fixed-focus lens module comprising: an outer lens barrel comprising a first open end, a first cavity, and a second open end arranged in the order from the object side to the image side thereof; an inner lens barrel received in the outer lens barrel adjacent to the first open end; a first lens received in the inner lens barrel; a second lens group received in the outer lens barrel adjacent to the second open end; wherein a gap is defined between an outer wall of the inner lens barrel and an inner wall of the outer lens barrel at the first open end, and the center axis of the inner lens barrel is adjustable relative to the outer lens barrel for adjusting the alignment between the first lens and the second lens group; wherein an annular protrusion extends inwardly from the inner wall of the outer lens barrel and contiguous with the first open end, and the inner lens barrel rests against the annular protrusion.