| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens attaching/detaching structure which makes it possible to easily set an engaging position of a tool for rotating operation with an annular rotating attaching/detaching body for supporting a lens, and accurately support a lens by suppressing distortion of the annular rotating attaching/detaching body when performing rotating operation.SOLUTION: The lens attaching/detaching structure includes: the annular rotating attaching/detaching body which can be detachably attached in a lens barrel through a circumferential screw part, and fixes the lens in the lens barrel in an attached state through the circumferential screw part; the tool for rotating operation which can be engaged with/disengaged from the annular rotating attaching/detaching body, and transmits rotational operating force in the engaged state; at least three tapered recesses having the same shape which are provided at nearly equal intervals differently in positions in a circumference direction on one of the annular rotating attaching/detaching body and the tool for rotating operation, and whose depth in a radial direction is gradually changed with a change in the position in the optical axis direction; and at least three tapered projections having the same shape which are provided at nearly equal intervals differently in positions in the circumference direction on the other of the annular rotating attaching/detaching body and the tool for rotating operation, and whose position in the radial direction is gradually changed with the change in the position in the optical axis direction and which can be engaged with the tapered recesses. |
