公开(公告)号：US20200278590A1

公开(公告)日：2020-09-03

申请号：US16802472

申请日：2020-02-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshiyuki NAKADA ,  Tetsuya UNO ,  Satoshi FUKUDA

IPC: G03B9/06 ,  G02B7/02 ,  G03B17/42

Abstract: An aperture unit includes a base plate, a cover, a plurality of aperture blades, a drive ring, and protrusions. The aperture blades are disposed between the base plate and the cover, and adjust the amount of light passing through by varying the size of an opening. The drive ring is disposed between the base plate and the cover, and is rotationally driven when the aperture blades are opened and closed. The protrusions are provided to the drive ring and the cover, respectively, and support the aperture blades in the direction of suppressing upward warpage of the aperture blades in a state in which the aperture blades move in the direction of reducing the size of the opening.

公开(公告)号：US20170139180A1

公开(公告)日：2017-05-18

申请号：US15418959

申请日：2017-01-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroyasu FUJINAKA ,  Toshiyuki NAKADA ,  Tetsuya UNO

IPC: G02B7/10 ,  G02B27/64 ,  G02B15/16

CPC classification number: G02B7/10 ,  G02B7/102 ,  G02B15/16 ,  G02B27/646

Abstract: A lens barrel in which a lens can be moved in a direction parallel to an optical axis includes: a first frame having a cam follower and a cam follower base that holds the cam follower; and a second frame that has a cam groove engageable with the cam follower. The first frame and the second frame are moved relatively to each other along the optical axis. The cam follower base has a first end connected to the main body of the first frame via at least one thin portion, and a second end not connected to the main body. The thin portion is formed such that a thickness of the thin portion in a radial direction of the lens barrel is smaller than that of the cam follower base.