| 摘要 |
<p>A lens device (3A) comprising: a lens barrel (10) having operation rings (20, 21, 22) provided so as to be rotatable around the optical axis of an image-forming optical system, in order to adjust movable optical elements included in the image-forming optical system; and a grip (11) having a drive section for rotatably driving the operation rings, and equipped with a drive unit detachably fixed to a prescribed location on the outer circumference of the lens barrel. The grip is moved relative to the lens barrel in the optical axis direction and attached to and detached from the lens barrel; and engagement sections (50, 51, 52, 53) are provided in the operation rings and the grip, said engagement sections mutually engaging during the process of attachment/detachment of the grip from the lens barrel, when the operation rings are at a prescribed rotation angle having the optical axis at the center thereof, and allowing the attachment/detachment of the grip.</p> |
