| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel that is advantageous for suppressing play between cam grooves of a cam cylinder and cam followers fitting into the cam grooves while suppressing enlargement in size of the cam cylinder.SOLUTION: The lens barrel comprises: a cam cylinder 7; a first moving member that holds a lens and is movable on an optical axis via a first cam follower 9 fitting into a specific cam groove 12a of a plurality of cam grooves 12; a second moving member that is movable on the optical axis via a second cam follower 11 fitting into a cam groove 12b different from the cam groove 12a; and a biasing member that exists in an area where the first moving member and the second moving member face each other and with respect to the first moving member and the second moving member, applies a biasing force in a direction of mutually separating the moving members from each other in the optical direction or in a direction of mutually attracting the moving members. In this case, respective actual effective ranges Le in which the first cam follower 9 and the second cam follower 11 actually move in the cam grooves 12a and 12b are not overlapped with each other on the optical axis. |
