公开(公告)号：US11079575B2

公开(公告)日：2021-08-03

申请号：US16338736

申请日：2017-10-16

Applicant: Nikon Corporation

Inventor： Tomoki Ito

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

Abstract: Comprising, in order from an object side: a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a fifth lens group having negative refractive power; upon varying a magnification, the first lens group being fixed with respect to the image plane, and each distance between the neighboring lens groups being varied; upon focusing, at least a portion of the fourth lens group being moved; and predetermined conditional expression(s) being satisfied, thereby variations in various aberrations upon varying magnification being superbly suppressed.

公开(公告)号：US11971540B2

公开(公告)日：2024-04-30

申请号：US16771649

申请日：2017-12-15

Applicant: Nikon Corporation

Inventor： Masashi Yamashita ,  Tomoki Ito ,  Hiroshi Yabumoto ,  Hiroshi Yamamoto ,  Satoshi Miwa ,  Keisuke Tsubonoya ,  Ayumu Makida ,  Takeru Uehara

IPC: G02B27/00 ,  G02B3/00 ,  G02B15/14 ,  G02B15/163

CPC classification number: G02B27/0025 ,  G02B3/00 ,  G02B15/1425 ,  G02B15/143105 ,  G02B15/144113 ,  G02B15/144511 ,  G02B15/1461 ,  G02B15/163 ,  G02B2003/0093

Abstract: An optical system (LS) includes lenses (L22,L23) satisfying the following conditional expressions,

ndLZ+(0.01425×νdLZ)

公开(公告)号：US11256074B2

公开(公告)日：2022-02-22

申请号：US16798301

申请日：2020-02-22

Applicant: Nikon Corporation

Inventor： Tomoki Ito

IPC: G02B15/20 ,  G02B15/167 ,  G02B15/14 ,  G02B15/173 ,  H04N5/225 ,  G02B27/64 ,  G02B27/00 ,  G02B15/163 ,  G02B13/00 ,  G02B5/00 ,  G02B9/34 ,  G02B13/18 ,  G02B15/16

Abstract: Comprising a first lens group G1 having positive refractive power, disposed at the most object side, and an image side lens group disposed at a side closer to an image than the first lens group G1, upon zooming, at least a distance between the first lens group G1 and the image side lens group being varied, the image side lens group comprising a vibration reduction lens group GVR which is moved so as to have a component in a direction perpendicular to the optical axis and a focusing lens group GF which is moved along the optical axis upon focusing, thereby providing a variable magnification optical system which has a higher optical performance, an optical apparatus and a method for manufacturing a variable magnification optical system.

公开(公告)号：US12174355B2

公开(公告)日：2024-12-24

申请号：US17879741

申请日：2022-08-02

Applicant: Nikon Corporation

Inventor： Tomoki Ito ,  Hiroshi Yamamoto

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

Abstract: A zoom optical system includes, in order from an object, a first lens group, a second lens group, and a third lens group having positive, negative, and positive refractive powers, respectively. The first lens group moves toward the object and air distances between the first to third lens groups vary upon zooming from a wide-angle end state to a tele-photo end state. The first lens group comprises a cemented lens consisting of a negative lens and a positive lens in order from the object. The following conditional expressions are satisfied: 4.40

公开(公告)号：US12061324B2

公开(公告)日：2024-08-13

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

CPC classification number: G02B15/14 ,  G02B15/143103 ,  G02B15/145113 ,  G02B15/145121 ,  G02B15/1461 ,  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：US11899189B2

公开(公告)日：2024-02-13

申请号：US17359927

申请日：2021-06-28

Applicant: Nikon Corporation

Inventor： Tomoki Ito

IPC: G02B15/14 ,  H04N5/225 ,  G02B13/00 ,  G02B15/20

CPC classification number: G02B15/145113 ,  G02B13/009 ,  G02B15/20

Abstract: Comprising, in order from an object side: a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a fifth lens group having negative refractive power; upon varying a magnification, the first lens group being fixed with respect to the image plane, and each distance between the neighboring lens groups being varied; upon focusing, at least a portion of the fourth lens group being moved; and predetermined conditional expression(s) being satisfied, thereby variations in various aberrations upon varying magnification being superbly suppressed.

公开(公告)号：US11150451B2

公开(公告)日：2021-10-19

申请号：US16334023

申请日：2017-10-05

Applicant: Nikon Corporation

Inventor： Takeshi Umeda ,  Tomoki Ito ,  Atsushi Shibayama

IPC: G02B15/20 ,  G02B27/64 ,  G02B13/18

Abstract: A zoom optical system (ZL) comprises a first negative lens group (G2) having a negative refractive power; and a second negative lens group (G4) disposed closer to an image than the first negative lens group (G2), wherein a distance between the first negative lens group (G2) and the second negative lens group (G4) changes during zooming, at least part of the first negative lens group (G2) is movable so as to have a displacement component in a direction perpendicular to an optical axis, at least part of the second negative lens group (G4) is movable along the optical axis during focusing, and the following conditional expression, 0.50

公开(公告)号：US10578844B2

公开(公告)日：2020-03-03

申请号：US15418775

申请日：2017-01-29

Applicant: Nikon Corporation

Inventor： Tomoki Ito

IPC: G02B15/14 ,  G02B15/20 ,  G02B15/167 ,  G02B15/173 ,  H04N5/225 ,  G02B27/64 ,  G02B27/00 ,  G02B15/163 ,  G02B13/00 ,  G02B5/00 ,  G02B9/34 ,  G02B13/18 ,  G02B15/16

Abstract: Comprising a first lens group G1 having positive refractive power, disposed at the most object side, and an image side lens group disposed at a side closer to an image than the first lens group G1, upon zooming, at least a distance between the first lens group G1 and the image side lens group being varied, the image side lens group comprising a vibration reduction lens group GVR which is moved so as to have a component in a direction perpendicular to the optical axis and a focusing lens group GF which is moved along the optical axis upon focusing, thereby providing a variable magnification optical system which has a higher optical performance, an optical apparatus and a method for manufacturing a variable magnification optical system.

公开(公告)号：US12222478B2

公开(公告)日：2025-02-11

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

公开(公告)号：US12072476B2

公开(公告)日：2024-08-27

申请号：US18132463

申请日：2023-04-10

Applicant: Nikon Corporation

Inventor： Masashi Yamashita ,  Tomoki Ito ,  Hiroshi Yabumoto ,  Hiroshi Yamamoto ,  Satoshi Miwa ,  Keisuke Tsubonoya ,  Ayumu Makida ,  Takeru Uehara

IPC: G02B13/18 ,  G02B13/02 ,  G02B15/14 ,  G02B27/00

CPC classification number: G02B13/18 ,  G02B13/02 ,  G02B15/144113 ,  G02B15/144511 ,  G02B15/1461 ,  G02B27/0062 ,  G02B15/1425 ,  G02B15/143105

Abstract: An optical system (LS) includes lenses (L22,L23) satisfying the following conditional expressions,

νdLZ