公开(公告)号：US11668914B2

公开(公告)日：2023-06-06

申请号：US17085457

申请日：2020-10-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehiro Nishioka ,  Hisayuki II

IPC: G02B15/14 ,  G02B7/14 ,  G03B5/00

CPC classification number: G02B15/1461 ,  G02B7/14 ,  G03B5/00 ,  G03B2205/0046

Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; and following lens groups. The following lens groups include: a first focus lens group having negative power; and a second focus lens group having positive power, arranged adjacent to, and closer to the image than, the first focus lens group. The first and second focus lens groups move along an optical axis during focusing from an infinity focus point on a close focus point. During zooming from a wide-angle end toward a telephoto end, intervals between lens groups change with the first lens group fixed with respect to an image plane. The zoom lens system satisfies the Inequality −0.23

公开(公告)号：US20210132345A1

公开(公告)日：2021-05-06

申请号：US17085457

申请日：2020-10-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehiro NISHIOKA ,  Hisayuki II

IPC: G02B15/14 ,  G02B7/14 ,  G03B5/00

Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; and following lens groups. The following lens groups include: a first focus lens group having negative power; and a second focus lens group having positive power, arranged adjacent to, and closer to the image than, the first focus lens group. The first and second focus lens groups move along an optical axis during focusing from an infinity focus point on a close focus point. During zooming from a wide-angle end toward a telephoto end, intervals between lens groups change with the first lens group fixed with respect to an image plane. The zoom lens system satisfies the Inequality −0.23

公开(公告)号：US20160195691A1

公开(公告)日：2016-07-07

申请号：US15070507

申请日：2016-03-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takakazu BITO ,  Shunichiro YOSHINAGA ,  Hideki KAI ,  Tsutomu IWASHITA ,  Yoshiaki KURIOKA ,  Aya TOMITA ,  Hisayuki II

IPC: G02B9/34 ,  G02B13/24 ,  G02B27/00

CPC classification number: G02B9/34 ,  G02B3/04 ,  G02B5/005 ,  G02B9/04 ,  G02B13/002 ,  G02B13/0045 ,  G02B13/0065 ,  G02B13/04 ,  G02B13/18 ,  G02B13/24 ,  G02B15/14 ,  G02B15/177 ,  G02B27/0025

Abstract: An imaging optical system, in order from an object side to an image side, includes: a first lens unit having positive optical power; and a second lens unit. In focusing from an infinity in-focus condition to a close-object in-focus condition, the first lens unit moves along an optical axis, and the second lens unit is fixed with respect to an image surface. The imaging optical system is compact, sufficiently suppresses occurrence of various aberrations, has high resolution from the infinity in-focus condition to the close-object in-focus condition, is bright and highly efficient, and is suitable for wide-angle photographing.

Abstract translation: 成像光学系统从物体侧到像侧依次包括：具有正光焦度的第一透镜单元; 和第二透镜单元。 在从无限远对焦状态到近距离对焦状态的对焦中，第一透镜单元沿着光轴移动，并且第二透镜单元相对于图像面固定。 成像光学系统紧凑，足以抑制各种像差的发生，从无限远对焦状态到近距离对焦状态具有高分辨率，是高亮度且高效的，适用于广角拍摄。