| 摘要 |
PROBLEM TO BE SOLVED: To prevent, in a configuration where an operation ring is energized by a spring in an optical axis direction when adjusting an operation torque of the operation ring, a roller or a bayonet part regulating an optical axis position of the operation ring from wearing by abrasion in a long-time use due to one-sided energization, and also to prevent an increase in the operation torque or a change in the optical axis position of the operation ring.SOLUTION: A lens barrel includes an elastic member configured to energize an operation ring in opposite directions frontward and backward of an optical axis direction.SELECTED DRAWING: Figure 1 |
