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：US20250044570A1

公开(公告)日：2025-02-06

申请号：US18717545

申请日：2022-12-02

Applicant: NIKON CORPORATION

Inventor： Azuna NONAKA

IPC: G02B21/02 ,  G02B15/14

Abstract: A microscope objective lens (OL) comprises a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, and a third lens group (G3) having positive refractive power, the first lens group (G1) having a cemented lens (CL11) including a negative lens. The microscope objective lens satisfies the following conditional expressions. 0.625

公开(公告)号：US20240350006A1

公开(公告)日：2024-10-24

申请号：US18756177

申请日：2024-06-27

Applicant: NIKON CORPORATION ,  OPTOS PLC

Inventor： Gonzalo MUYO ,  Alistair GORMAN ,  David M. WILLIAMSON ,  Makoto FUJIMOTO ,  Yasufumi NISHI ,  Azuna NONAKA ,  Katsuya WATANABE ,  Miwako YOSHIDA ,  Kyoya TOKUNAGA ,  Masahiro MIZUTA

IPC: A61B3/14 ,  A61B3/00

CPC classification number: A61B3/14 ,  A61B3/0008 ,  A61B3/0041

Abstract: The ophthalmic optical system is configured to apply an angular scanning light ray to an eye. M=|ωout/ωin| is defined, where ωin represents an angle between an incident light ray to the ophthalmic optical system and an optical axis of the ophthalmic optical system, and ωout represents an angle between an exiting light ray exiting from the ophthalmic optical system toward the eye and the optical axis. The ophthalmic optical system satisfies a conditional expression Mpar

公开(公告)号：US20240255740A1

公开(公告)日：2024-08-01

申请号：US18618703

申请日：2024-03-27

Applicant: Nikon Corporation

Inventor： Fumiaki OHTAKE ,  Azuna NONAKA

IPC: G02B15/14 ,  G02B3/04

CPC classification number: G02B15/1425 ,  G02B3/04

Abstract: A magnification-variable optical system having a small size, a wide angle of view, and high optical performance, an optical apparatus including the magnification-variable optical system, and a method for manufacturing the magnification-variable optical system are provided.
A magnification-variable optical system ZL used for an optical apparatus such as a camera 1 includes a first lens group G1 having a negative refractive power and including at least two lenses, and a rear group GR including at least one lens group disposed on an image side of the first lens group G1, and is configured so that a distance between lens groups adjacent to each other changes at magnification change and a condition expressed by predetermined condition expressions is satisfied.

公开(公告)号：US20250060572A1

公开(公告)日：2025-02-20

申请号：US18936276

申请日：2024-11-04

Applicant: Nikon Corporation

Inventor： Fumiaki OHTAKE ,  Azuna NONAKA

IPC: G02B15/14 ,  G02B3/04

Abstract: A magnification-variable optical system having a small size, a wide angle of view, and high optical performance, an optical apparatus including the magnification-variable optical system, and a method for manufacturing the magnification-variable optical system are provided, the magnification-variable optical system ZL being used for an optical apparatus and includes a first lens group G1 having a negative refractive power, and a rear group GR including at least one lens group disposed on an image side of the first lens group G1, and is configured so that a distance between lens groups adjacent to each other changes at magnification change and a condition expressed by predetermined condition expressions is satisfied.

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：US20200033577A1

公开(公告)日：2020-01-30

申请号：US16595673

申请日：2019-10-08

Applicant: NIKON CORPORATION

Inventor： Katsuya WATANABE ,  Azuna NONAKA

IPC: G02B21/02 ,  G02B21/33 ,  G02B9/14

Abstract: An objective lens (OL) comprises, disposed in order from an object: a positive lens (L11); a negative meniscus lens (L12) cemented to the positive lens (L11) and having a concave surface facing the object; and a positive meniscus lens (L13) having a concave surface facing the object; wherein the objective lens satisfies following conditional expressions 2.03≤n1m≤2.30 and 20≤ν1m, where, n1m: a refractive index of the negative meniscus lens (L12) with respect to a d-line, and ν1m: an Abbe number of the negative meniscus lens (L12).

公开(公告)号：US20250044569A1

公开(公告)日：2025-02-06

申请号：US18713776

申请日：2022-11-18

Applicant: NIKON CORPORATION

Inventor： Azuna NONAKA

IPC: G02B21/02 ,  G02B9/60 ,  G02B27/00

Abstract: A microscope objective lens (OL) comprises a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, and a third lens group (G3) having positive refractive power, the third lens group (G3) having a cemented lens (CL31) including a positive lens and a negative lens. The microscope objective lens satisfies the following conditional expression. 0.1

公开(公告)号：US20230012479A1

公开(公告)日：2023-01-19

申请号：US17783252

申请日：2020-12-02

Applicant: Nikon Corporation

Inventor： Fumiaki OHTAKE ,  Azuna NONAKA ,  Yoshiharu YUASA ,  Takeshi UMEDA

IPC: G02B15/14 ,  G02B15/15 ,  G02B15/22

Abstract: A variable magnification optical system (ZL) comprises a preceding lens group (GA) having negative refractive power and a succeeding lens group (GB) having positive refractive power, which are arranged in order from the object side along an optical axis. The succeeding lens group (GB) has a focusing group (GF) and an image-side group (GC) disposed closer to the image side than the focusing group (GF), the focusing group (GF) moves to the image side along the optical axis from focusing on an object at infinity to focusing on a close-distance object, and the following conditional expression is satisfied. 1.80