Lens module

A lens module, comprising a lens barrel defining an accommodating space and a lens group accommodated in the lens barrel, the lens barrel comprising an inner surface enclosing the accommodating space and an outer surface disposed opposite to the inner surface, the lens group comprising a first lens adjacent to an object side of the lens barrel and a second lens adjacent to an image side of the lens barrel, and the first lens and the second lens being sequentially stacked, wherein the lens module further comprises a spacer ring disposed between the first lens and the second lens, the spacer ring comprises a first surface adjacent to the object side, a second surface disposed opposite to the first surface and adjacent to the image side, and a glue penetration hole recessing from one of the first surface and the second surface to the other, and after dispensing and curing of glue, a cured glue layer is formed in the glue penetration hole to support the spacer ring.