LENS BARREL AND IMAGING DEVICE

To provide a backlash removing for the circumferential direction between the tube members in a lens barrel.SOLUTION: A lens barrel 1 includes: a first tube 15 including a focus lens on an inner-diameter side; a second tube 14 arranged outside the first tube 15 in a radial direction, the second tube having a straight guiding unit along an optical axis; and bearings 104, 105 provided in the first tube 15 and protruding from the first tube 15. The bearings are in contact with the straight guiding unit 141 along a circumferential direction on the basis of the optical axis.SELECTED DRAWING: Figure 2 【課題】レンズ鏡筒内の筒部材間の周方向のガタ取りを行う。【解決手段】レンズ鏡筒１を、合焦レンズを内径側に含む第１筒１５と、前記第１筒１５の径方向の外側に配置され、光軸に沿った直進案内部を有する第２筒１４と、前記第１筒１５に設けられ、前記第１筒１５から突出するように配置されるベアリング１０４，１０５と、を備え、前記ベアリングは、光軸を中心とする周方向に沿って前記直進案内部１４１と当接する構成とする。【選択図】図２