Patent ID: 9557517
Date: 2017-01-31
CPC Classifications: G02B,G03B

Claim:
1. A lens barrel that holds a lens system comprising a plurality of lens groups, the lens barrel comprising: a cylindrical fixed barrel; an object-side fixed lens group that is a lens group that is positioned furthest on an object side of the lens system, and that is fixed to an object-side end portion of the fixed barrel; an image-side fixed lens group that is a lens group that is positioned furthest on an image side of the lens system, and that is fixed to an image-side end portion of the fixed barrel; a first focusing lens group that is a lens group that is arranged at a position that is further on the image side than the object-side fixed lens group of the lens system; a first moving lens holding barrel that holds the first focusing lens group and that is arranged so as to be movable along the optical axis inside the fixed barrel; a second focusing lens group that is a lens group that is arranged at a position that is further on the image side than the first focusing lens group of the lens system; a second moving lens holding barrel that holds the second focusing lens group and that is arranged so as to be movable along the optical axis inside the fixed barrel; a wobbling lens group that is a lens group comprising a single lens that is arranged at a position that is further on the image side than the second focusing lens group of the lens system; a third moving lens holding barrel that holds the wobbling lens group and that is arranged so as to be movable along the optical axis inside the fixed barrel; a first, second, and third drive mechanism portions that independently drive the first moving lens holding barrel, the second moving lens holding barrel, and the third moving lens holding barrel, respectively; and an exterior member that covers an outer circumference of the fixed barrel, wherein a wobbling operation is performed by causing the wobbling lens group to vibrate in the optical axis direction, and the lens barrel is configured to be capable of performing a focusing operation by moving the first focusing lens group and the second focusing lens group in an optical axis direction, the fixed barrel can be detached from the exterior member in a state in which the fixed barrel holds the lens system and the first, second, and third drive mechanism portions, and the first, second, and third drive mechanism portions can be assembled with respect to the fixed barrel from an outer circumferential portion of the fixed barrel in a state in which the fixed barrel holds the lens system, wherein the first drive mechanism portion is configured so as to engage with the first moving lens holding barrel through an opening portion that is provided in the outer circumferential portion of the fixed barrel, and the second and third drive mechanism portions are mounted inside of the fixed barrel and configured so as to engage with the second moving lens holding barrel and the third moving lens holding barrel, respectively.