Patent ID: 7586697

Claim:
A lens device, comprising: a lens element having a substantially cylindrical periphery, said lens element being injection molded in a cavity of a mold having at least one ejector rod extending within said cavity for ejecting said lens element in an axial direction of said lens element; and a lens barrel for holding said lens element therein; wherein said lens element is molded in a cavity of a mold and has at least one round axial depression formed in a back surface of said substantially cylindrical periphery thereof by transferring a shape of a top end portion of an ejector rod during molding of said lens element and said lens barrel is provided with a round axial projection formed corresponding to a circumferential position of said round axial depression which has an axial length shorter than an axial depth of said round axial depression and an outer diameter smaller than an inner diameter of said round axial depression; and said lens barrel holds said lens element therein with said round axial projection received in said round axial depression.