公开(公告)号：US20220146798A1

公开(公告)日：2022-05-12

申请号：US17431707

申请日：2019-12-20

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.
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：US20210093194A1

公开(公告)日：2021-04-01

申请号：US17035152

申请日：2020-09-28

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

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：US20250085520A1

公开(公告)日：2025-03-13

申请号：US18961147

申请日：2024-11-26

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. - 0.01

公开(公告)号：US20230408804A1

公开(公告)日：2023-12-21

申请号：US18240658

申请日：2023-08-31

Applicant: NIKON CORPORATION

Inventor： Katsuya WATANABE ,  Azuna NONAKA

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

CPC classification number: G02B21/02 ,  G02B9/14 ,  G02B21/33

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：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

公开(公告)号：US20220137378A1

公开(公告)日：2022-05-05

申请号：US17432368

申请日：2019-12-20

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.
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 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.