US 11,982,868 B2
Lens barrel and imaging device
Osamu Gomibuchi, Tokyo (JP); Makoto Horikoshi, Tokyo (JP); Mizuki Wayu, Tokyo (JP); Tsuneo Watanabe, Tokyo (JP); and Kenichi Kitano, Tokyo (JP)
Assigned to NIKON CORPORATION, Tokyo (JP)
Appl. No. 17/430,486
Filed by NIKON CORPORATION, Tokyo (JP)
PCT Filed Dec. 18, 2019, PCT No. PCT/JP2019/049636
§ 371(c)(1), (2) Date Aug. 12, 2021,
PCT Pub. No. WO2020/170586, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 2019-030092 (JP), filed on Feb. 22, 2019.
Prior Publication US 2022/0137325 A1, May 5, 2022
Int. Cl. G02B 7/10 (2021.01); G03B 17/12 (2021.01)
CPC G02B 7/10 (2013.01) [G03B 17/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A lens barrel, comprising:
a moving tube that moves along an optical axis when changing a focal length;
a first driving part provided to the moving tube;
a first lens that relatively moves along the optical axis with respect to the moving tube by the first driving part;
a second driving part provided to the moving tube; and
a second lens that relatively moves along the optical axis with respect to the moving tube by the second driving part, wherein
a moving distance of the first lens with respect to the moving tube, in a case of changing a focal length to a second focal length in a first state in which the first lens is arranged closest to a subject side at a first focal length, is smaller than a moving distance of the first lens with respect to the moving tube, in a case of changing a focal length to the second focal length in a second state in which the first lens is arranged closer to an image surface side at the first focal length than in the first state.