| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel that hardly cause torque unevenness of rotating while giving an operation ring moderate torque, has an operation touch of the operation ring improved and can reduce an operation sound due to a sliding movement.SOLUTION: A lens barrel comprises: a stationary barrel 1; an operation ring 3 that is arranged rotatably relative to the stationary barrel 1 and non-movably in an axis direction; and a sliding ring 4 that is held by the stationary barrel 1. The operation ring 3 and the sliding ring 4 comprise opposing faces 35 and 42 arranged to oppose each other, respectively. Further, the operation ring 3 comprises a sliding protrusion part 34 composed of an almost hemispherical protrusion piece that is formed on the opposing face 35 at three portions in a circumferential direction so as to protrude on an opposing face 42 side of the sliding ring 4.SELECTED DRAWING: Figure 2 |
