Patent ID: 7983555

Claim:
A camera module comprising: a barrel comprising a first cylindrical part and a first threaded part connected to the first cylindrical part in an order from an image side to an object side, the first threaded part comprising a plurality of external threads, the barrel further comprising a first surface connecting the first cylindrical part and the first threaded part, the first surface facing the object side; a holder comprising a second cylindrical part and a second threaded part connected to the second cylindrical part in an order from the image side to the object side, the second threaded part comprising a plurality of internal threads, the holder further comprising a second surface connecting the second cylindrical part and the second threaded part, the second surface facing the image side, the barrel being coupled to the holder through clearance fit engagement between the internal threads and the external threads; and a compressed resilient spring member sandwiched between the first surface of the barrel and the second surface of the barrel, the resilient spring member being configured for exerting a first spring force to the barrel and a second spring force to the holder so that the barrel is secured to the holder.