| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel that is advantageous to suppression of a movably held lens from being loose.SOLUTION: A lens barrel 1 configured to enable at least one lens L1 to move in an optical axis direction comprises: a first member 30; a second member 21 that holds the lens L1 and can vary a relative position to the first member 30 in the optical axis direction; and a plurality of rollers 11 that are individually provided around the optical axis in one of the first member 30 and the second member 21, come into contact with the other of the first member 30 and the second member 21, and, in conjunction to a movement of the second member 21 in the optical axis direction, conduct rolling motion relative to the first member 30 while supporting the second member 21. At least one roller (roller 11a) of the plurality of rollers 11 is configured to be movable in a direction orthogonal to the optical axis, and impart a force with the position being not limited, and rollers 11b and 11c other than the at least one roller are configured to have the positions limited while being movable in the direction orthogonal to the optical axis. |
