公开(公告)号：US20220382010A1

公开(公告)日：2022-12-01

申请号：US17750878

申请日：2022-05-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuto SUZUKI ,  Yoshiaki KURIOKA ,  Shunichiro YOSHINAGA

IPC: G02B7/04 ,  G02B9/64 ,  G03B3/10

Abstract: An imaging optical system includes a first lens group having positive power, a second lens group, and a third lens group. The first lens group includes a sub-lens group G1A, an aperture stop, and a sub-lens group G1B. The sub-lens group G1A includes a lens L1A1 and a lens L1A2. An object-side surface of the lens L1A1 is convex toward an object. The third lens group includes a lens L3E having negative power and a lens L3P located adjacent to, and closer to the object than, the lens L3E.

公开(公告)号：US20220035124A1

公开(公告)日：2022-02-03

申请号：US17280030

申请日：2020-01-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shunichiro YOSHINAGA ,  Yasuto SUZUKI

IPC: G02B7/28 ,  G02B13/18 ,  G02B15/14 ,  G03B17/14 ,  H04N5/225 ,  G02B7/14

Abstract: An imaging optical system includes: a front group having positive power; an aperture stop; a single lens Fn arranged adjacent to the aperture stop and having negative power; and a rear group having power. The front group includes: a first lens having positive power; a second lens having negative power; and a lens LG1R having positive power. The rear group includes a lens LGnR having negative power and located closest to the image. While focusing to make a transition from an infinity in-focus state to a close-object in-focus state, neither the front group nor the rear group moves but the single lens Fn moves along an optical axis toward the image. The imaging optical system satisfies the inequality: 0.38