公开(公告)号：US20210055531A1

公开(公告)日：2021-02-25

申请号：US16999666

申请日：2020-08-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Genki NAKAZAWA ,  Takao YAMANAKA ,  Yoshiaki KURIOKA

IPC: G02B15/20 ,  G02B13/18 ,  G02B15/22 ,  G02B13/00 ,  G03B17/14 ,  H04N5/225 ,  H04N5/232

Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having positive power; a fifth lens group having negative power; and a following lens group following the fifth lens group. The first to fifth lens groups and the following lens group are arranged in this order such that the first lens group is located closest to an object and that the following lens group is located closest to an image. While the zoom lens system is zooming, intervals between the respective lens groups change. While the zoom lens system is focusing from an infinity focus point through a shortest shooting range, a plurality of negative lens groups included in the fifth lens group and the following lens group move.

公开(公告)号：US20230384569A1

公开(公告)日：2023-11-30

申请号：US18202560

申请日：2023-05-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Genki NAKAZAWA

IPC: G02B13/18 ,  H04N23/55 ,  G02B9/28 ,  G03B13/34 ,  G03B17/14 ,  G02B7/14 ,  G02B7/02

CPC classification number: G02B13/18 ,  H04N23/55 ,  G02B9/28 ,  G03B13/34 ,  G03B17/14 ,  G02B7/14 ,  G02B7/021

Abstract: An imaging optical system consists of a first lens group having positive power, a second lens group having power; and a third lens group having power. The first lens group and the third lens group are immobile along an optical axis and the second lens group moves along the optical axis while the imaging optical system is focusing. The first lens group consists of: a sub-lens group G1A; an aperture stop; and a sub-lens group G1B. The sub-lens group G1A includes: a meniscus lens L1A1 having positive power and having a convex surface facing the object; a meniscus lens L1A2 having negative power and having a convex surface facing the object; and a meniscus lens L1A3 having negative power and having a convex surface facing the object.

公开(公告)号：US20230305278A1

公开(公告)日：2023-09-28

申请号：US18205155

申请日：2023-06-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Genki NAKAZAWA ,  Takao YAMANAKA ,  Yoshiaki KURIOKA

IPC: G02B15/20 ,  G02B13/18 ,  G02B15/22 ,  G02B13/00 ,  G02B15/14

CPC classification number: G02B15/20 ,  G02B13/18 ,  G02B15/22 ,  G02B13/009 ,  G02B15/1461

Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having positive power; a fifth lens group having negative power; and a following lens group following the fifth lens group. The first to fifth lens groups and the following lens group are arranged in this order such that the first lens group is located closest to an object and that the following lens group is located closest to an image. While the zoom lens system is zooming, intervals between the respective lens groups change. While the zoom lens system is focusing from an infinity focus point through a shortest shooting range, a plurality of negative lens groups included in the fifth lens group and the following lens group move.