Patent ID: 8749901

Claim:
A method for assembling a lens module, comprising: providing a lens barrel, at least an optical element, a spacer ring and a fixing ring, the spacer ring having a ring body defining a first side surface and an annular protrusion protruding from the first side surface of the ring body, the fixing ring comprising an annular pipe and a glue received in the pipe, the pipe made from poly (ethylene vinyl acetate); placing the at least one optical element and the spacer ring into the lens barrel, the first side surface facing away from the optical element; the annular protrusion, the first side surface and an inner surface of the lens barrel cooperatively defining an annular groove therebetween; placing the fixing ring in the annular groove; heating the fixing ring to melt the pipe such that the glue is released to fill the annular groove; and curing the glue in the annular groove.