Patent ID: 7221524

Claim:
A compact image pickup module comprising: an imaging lens; a cylindrical lens-barrel that holds said imaging lens; an image pickup element; an image pickup element holder which holds said image pickup element and into which said lens-barrel is fitted so as to be rotatable about an optical axis of said imaging lens and movable in a direction of said optical axis of said imaging lens; a cylindrical cam which has as an upper surface or a lower surface thereof, an annular cam surface whose center is set at the optical axis of said imaging lens and which is formed in one of said lens-barrel and said image pickup element holder; and an abutment member which is abutted against said annular cam surface of said cylindrical cam under a state where said lens-barrel is fitted into said image pickup element holder and which is formed in the other of said lens-barrel and said image pickup element holder, wherein, after focusing is performed through relative rotation of said lens-barrel and said image pickup element holder, said lens-barrel and said image pickup element holder are fixed to each other.