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：US20170059832A1

公开(公告)日：2017-03-02

申请号：US15233146

申请日：2016-08-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shunichiro YOSHINAGA

IPC: G02B13/26 ,  G02B7/14 ,  G02B9/64 ,  G02B13/18 ,  G02B27/00 ,  G02B5/00

CPC classification number: G02B13/26 ,  G02B5/005 ,  G02B7/14 ,  G02B9/64 ,  G02B13/02 ,  G02B13/18 ,  G02B27/0025

Abstract: A single focal length lens system includes, in order from an object side to an image side, a first lens unit having positive optical power and a second lens unit including a lens element that moves in a direction of an optical axis with respect to an image surface in focusing from an infinity in-focus condition to a close-object in-focus condition. The first lens unit includes an aperture diaphragm and a lens element A located on the object side of the aperture diaphragm. A lens element B having positive optical power and a lens element C having negative optical power are located on the image side of the aperture diaphragm. Abbe numbers of the lens elements A, B, and C to the d-line and partial dispersion ratios of the lens elements A, B, and C for the g-line and the F-line satisfy a predetermined relation.

Abstract translation: 单个焦距透镜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包括相对于图像在光轴方向上移动的透镜元件的第二透镜单元 表面聚焦从无限远对焦状态到近距离对焦状态。 第一透镜单元包括孔径光阑和位于孔径光阑的物体侧上的透镜元件A. 具有正光焦度的透镜元件B和具有负光焦度的透镜元件C位于孔径光阑的像侧。 透镜元件A，B和C对于g线和F线的透镜元件A，B和C的d线和部分色散比的阿贝数满足预定关系。

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

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。