公开(公告)号：US20240094604A1

公开(公告)日：2024-03-21

申请号：US18367312

申请日：2023-09-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tetsuya UNO ,  Satoshi FUKUDA ,  Hiroki MIYAJI

IPC: G03B9/06 ,  G02B7/02

CPC classification number: G03B9/06 ,  G02B7/021 ,  G02B7/026 ,  G03B17/425

Abstract: An aperture unit comprises a base plate, a cover, a plurality of movable blades, a drive ring, a drive motor, and rotation shafts. The movable blades are disposed between the base plate and the cover, and adjust the amount of light passing through by varying the size of the opening by opening and closing operations. The drive ring is disposed between the base plate and the cover, is rotationally driven when the movable blades are opened and closed, and has a plurality of cam pins that move along cam grooves in the movable blades. The cover has protrusions that protrude toward the movable blades along the optical axis direction and restrict the movement of the movable blades in the optical axis direction.