公开(公告)号：US20240210656A1

公开(公告)日：2024-06-27

申请号：US18288820

申请日：2022-05-19

Applicant: NIKON CORPORATION

Inventor： Ayumu MAKIDA ,  Taeko TOSHI ,  Tomoki ITO ,  Keigo KOIDA ,  Miwako YOSHIDA

IPC: G02B13/00

CPC classification number: G02B13/0045 ,  G02B13/006

Abstract: An optical system is configured to include, in order from an object side, a first lens group, a stop, and a rear group including at least one cemented lens, and to satisfy all of the following conditional expressions:






0
.
3

⁢
5

公开(公告)号：US20250060571A1

公开(公告)日：2025-02-20

申请号：US18940650

申请日：2024-11-07

Applicant: Nikon Corporation

Inventor： Keigo KOIDA

IPC: G02B15/14 ,  G02B5/00 ,  G02B13/18 ,  G02B15/177 ,  G02B27/64

Abstract: A zoom lens includes, in order from an object, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group. Zooming is performed by changing respective distances between the first and second lens groups, the second and third lens groups, and the third and fourth lens groups. The first lens group includes a negative lens disposed closest to the object, and a negative lens. Specified conditional expressions are satisfied.

公开(公告)号：US20220334365A1

公开(公告)日：2022-10-20

申请号：US17636870

申请日：2020-08-26

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Tomonori KURIBAYASHI ,  Keigo KOIDA ,  Satoshi MIWA ,  Yoko KOMATSUBARA ,  Katsuya WATANABE ,  Azuna NONAKA ,  Ayumu MAKIDA

IPC: G02B15/14

Abstract: An optical system (LS) has an aperture stop (S), and a positive lens (L4) disposed closer to the object side than the aperture stop (S). The positive lens (L4) satisfies the following conditional expressions. −0.010

公开(公告)号：US20220291489A1

公开(公告)日：2022-09-15

申请号：US17636703

申请日：2020-08-26

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Tomonori KURIBAYASHI ,  Keigo KOIDA ,  Satoshi MIWA ,  Yoko KOMATSUBARA ,  Katsuya WATANABE ,  Azuna NONAKA ,  Ayumu MAKIDA

IPC: G02B15/14 ,  G02B15/16

Abstract: An optical system (LS) has an aperture stop (S), and a negative lens (L73) disposed closer to the image side than the aperture stop (S) and satisfying the following conditional expressions. −0.010

公开(公告)号：US20230367109A1

公开(公告)日：2023-11-16

申请号：US18029910

申请日：2021-12-02

Applicant: Nikon Corporation

Inventor： Keigo KOIDA

IPC: G02B15/20 ,  G02B15/14 ,  G02B13/02 ,  G02B27/64

CPC classification number: G02B15/20 ,  G02B15/1461 ,  G02B13/02 ,  G02B27/646 ,  G02B13/18

Abstract: A zoom optical system that can achieve size and weight reduction and has high optical performance, an optical apparatus, and a method for manufacturing the zoom optical system are provided.
A zoom optical system GL used in an optical apparatus such as a camera 1 includes a first lens group G1 having positive refractive power and disposed closest to an object side, a second lens group G2, and a rear lens group GL, spaces between the lens groups change at zooming, the first lens group G1 includes a positive lens L11 closest to the object side, and the zoom optical system satisfies a condition expressed by an expression below,


0.30

公开(公告)号：US20220269056A1

公开(公告)日：2022-08-25

申请号：US17636872

申请日：2020-08-26

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Tomonori KURIBAYASHI ,  Keigo KOIDA ,  Satoshi MIWA ,  Yoko KOMATSUBARA ,  Katsuya WATANABE ,  Azuna NONAKA ,  Ayumu MAKIDA

IPC: G02B15/14 ,  G02B13/00

Abstract: This optical system (LS) has an aperture diaphragm (S) and a negative lens (L4) disposed closer to an object side than the aperture diaphragm (S) and satisfies the following conditional expression. −0.010

公开(公告)号：US20200064605A1

公开(公告)日：2020-02-27

申请号：US16666896

申请日：2019-10-29

Applicant: NIKON CORPORATION

Inventor： Keigo KOIDA

IPC: G02B15/14 ,  G02B15/177 ,  G02B27/64 ,  G02B5/00

Abstract: A zoom lens consists of, in order from an object, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power. Zooming is performed by changing respective distances between the first and second lens groups, the second and third lens groups, and the third and fourth lens groups. The first lens group consists of, in order from an object, a negative lens, a negative lens and a positive lens, the second lens group consists of five lenses, and the third lens group consists of a bi-concave negative lens.

公开(公告)号：US20160341939A1

公开(公告)日：2016-11-24

申请号：US15161235

申请日：2016-05-21

Applicant: Nikon Corporation

Inventor： Keigo KOIDA

IPC: G02B15/177 ,  G02B5/00 ,  G02B27/64

Abstract: A first lens group (G1) having a negative refractive power, a second lens group (G2) having a positive refractive power, a third lens group (G3) having a negative refractive power, and a fourth lens group (G4) having a positive refractive power are provided in order from an object, and the first lens group (G1), the second lens group (G2), the third lens group (G3), and the fourth lens group (G4) move on an optical axis so that zooming is performed by changing distances between each lens group, and the first lens group (G1) comprises, in order from the object, a negative lens (L11) arranged closest to the object, a negative lens and a positive lens, and when an air interval between the third lens group (G3) and the fourth lens group (G4) in the wide-angle end state is denoted as D3T and an air interval between the third lens group (G3) and the forth lens group (G4) in the telephoto end state is denoted as D3T, and the following condition (1) is satisfied: 0.30

公开(公告)号：US20240061222A1

公开(公告)日：2024-02-22

申请号：US18385337

申请日：2023-10-30

Applicant: Nikon Corporation

Inventor： Keigo KOIDA

IPC: G02B15/14 ,  G02B27/64 ,  G02B15/177 ,  G02B5/00

CPC classification number: G02B15/144511 ,  G02B27/646 ,  G02B15/177 ,  G02B5/005 ,  G02B13/18

Abstract: A zoom lens includes, in order from an object, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group. Zooming is performed by changing respective distances between the first and second lens groups, the second and third lens groups, and the third and fourth lens groups. The first lens group includes a negative lens disposed closest to the object, and a negative lens. Specified conditional expressions are satisfied.

公开(公告)号：US20220269055A1

公开(公告)日：2022-08-25

申请号：US17636862

申请日：2020-08-26

Applicant: Nikon Corporation

Inventor： Masashi YAMASHITA ,  Tomoki ITO ,  Tomonori KURIBAYASHI ,  Keigo KOIDA ,  Satoshi MIWA ,  Yoko KOMATSUBARA ,  Katsuya WATANABE ,  Azuna NONAKA ,  Ayumu MAKIDA

IPC: G02B15/14 ,  G02B13/00

Abstract: An optical system (LS) has a lens (L11) that satisfies the following conditional expressions. −0.010