| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel that permits easy assembling work even by using a sheet-shaped throttle member, in particular prevention of omission to install the throttle member by mistake and enhancement of the reliability of assembling work.SOLUTION: A lens barrel 1 is equipped with a sheet-shaped and ring-shaped throttle member 2. The lens barrel 1 is further equipped with a first lens 3, a second lens 4, a third lens 5, a fourth lens 6 and a lens holding frame 7 for holding the throttle member 2. The lens holding frame 7 has as an integrally molded item a triangularly sectioned and ring-shaped throttle-mounting base 7B (frame), so arranged as to protrude from its inner circumferential face 7A. Here, the throttle member 2 is mounted on the throttle-mounting base 7B. And over the throttle-mounting base 7B, a notch part 7B2 (displayed) is formed, covered by the throttle member 2 in a state in which the throttle member 2 is mounted on the throttle-mounting base 7B.SELECTED DRAWING: Figure 2 |
