US 12,130,494 B2
Lens barrel and imaging device
Yohsuke Suzuki, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Appl. No. 17/428,277
Filed by Yohsuke Suzuki, Kanagawa (JP)
PCT Filed Jan. 23, 2020, PCT No. PCT/JP2020/002430
§ 371(c)(1), (2) Date Aug. 4, 2021,
PCT Pub. No. WO2020/174958, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-033994 (JP), filed on Feb. 27, 2019.
Prior Publication US 2022/0128791 A1, Apr. 28, 2022
Int. Cl. G02B 7/10 (2021.01); G02B 15/22 (2006.01); H04N 23/55 (2023.01)
CPC G02B 7/10 (2013.01) [G02B 15/22 (2013.01); H04N 23/55 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A lens barrel comprising:
a plurality of lens groups;
a driver configured to move at least part of the plurality of lens groups along an optical axis for focusing;
a holder configured to hold the plurality of lens groups and the driver; and
a mover configured to move the plurality of lens groups and the driver together along the optical axis by moving the holder along the optical axis, wherein:
the mover moves the holder to at least a first position and a second position, the first position at which a shooting distance of the lens barrel is changeable within a first range, the second position at which the shooting distance of the lens barrel is changeable within a second range,
the second range is shorter in minimum shooting distance than the first range,
the mover comprises a cylindrical cam including a cam part,
the holder comprises a follower slidable along the cam part,
the cam part is a cam groove in the cylindrical cam,
the cam groove includes:
a first groove in which the follower is located when the holder is at the first position, and
a second groove in which the follower is located when the holder is at the second position, and
the first groove and the second groove each have a shape extending in a direction orthogonal to the optical axis.