Patent ID: 7127161

Claim:
A lens barrel comprising: a lens frame configured to hold a lens; a holding frame configured to hold said lens frame; and an adjustment mechanism configured to press and fit said lens frame into said holding frame with a predetermined abutting force resulting from an elastic force, and while retaining a fit-in state thereof, enables an adjustment of a position of said lens frame with respect to said holding frame in directions of an optical axis via a plurality of stepwise stages through rotation of said lens frame around an axis of rotation thereof, wherein said adjustment mechanism includes a locking member provided on a circumference of either one of said lens frame or said holding frame and the position of which in the directions of the optical axis is changeable along the circumferential directions thereof; and a gripping member provided on another one of said lens frame or said holding frame, said gripping member configured to grip said locking member with a predetermined elastic force from both sides of said locking member parallel to the direction of said optical axis.