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21.发明公开公开(公告)号：US20240061221A1
公开(公告)日：2024-02-22
申请号：US18375375
申请日：2023-09-29
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
IPC: G02B15/14 , G02B13/18 , G02B15/163 , G02B15/177
CPC classification number: G02B15/144511 , G02B13/18 , G02B15/163 , G02B15/177 , G02B5/005
Abstract: A variable magnification optical system comprising, in order from an object side, a first lens group having negative refractive power, a first intermediate lens group having positive refractive power, a second intermediate lens group and a rear lens group; upon varying a magnification from a wide angle end state to a telephoto end state, the first lens group being moved along the optical axis, a distance between the first lens group and the first intermediate lens group being varied, a distance between the first intermediate lens group and the second intermediate lens group being varied, and a distance between the second intermediate lens group and the rear lens group being varied; the rear lens group comprising at least one focusing lens group which is moved upon carrying out focusing from an infinitely distant object to a closely distant object; and predetermined conditional expressions being satisfied, thereby the focusing lens group(s) being reduced in weight.
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公开(公告)号：US20240053582A1
公开(公告)日：2024-02-15
申请号：US18271465
申请日：2022-01-21
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
IPC: G02B9/34
CPC classification number: G02B9/34
Abstract: An optical system (OL) has a first lens group (G1), a first focusing lens group (GF1) having a negative refractive power, and a second focusing lens group (GF2) having a positive refractive power, arranged in the stated order from the object side along the optical axis, the first focusing lens group (GF1) and the second focusing lens group (GF2) moving along the optical axis in mutually different trajectories during focusing, and the optical system (OL) furthermore having an aperture diaphragm (S) disposed further toward the object side than the first focusing lens group (GF1), and satisfying the following conditional expression: 0.68
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公开(公告)号：US20230073221A1
公开(公告)日：2023-03-09
申请号：US17795530
申请日：2021-01-12
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA , Kyoya TOKUNAGA
Abstract: A variable magnification optical system used in an optical apparatus is configured to include a plurality of lens groups such that upon varying magnification the distances between the lens groups are varied; a final lens group closest to an image side of the lens groups includes at least one lens surface having a pole; and the following conditional equation (1) or (2) is satisfied. 0.50
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公开(公告)号：US20220244514A1
公开(公告)日：2022-08-04
申请号：US17696123
申请日：2022-03-16
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
IPC: G02B15/20 , G02B15/14 , G02B13/18 , G02B15/177
Abstract: A variable magnification optical system comprising a plurality of lens groups and, upon varying a magnification, distances between respective lens groups in the plurality of lens groups being varied. The plurality of lens groups comprises an object side focusing lens group which is moved upon carrying out focusing and at least one image side focusing lens group disposed in a more image side than the object side focusing lens group and moved with a trajectory differing from that of the object side focusing lens group, upon carrying out focusing. The predetermined conditional expressions are satisfied. Thus, variations in aberrations upon varying magnification from the wide angle end state to the telephoto end state as well as variations in aberrations upon carrying out focusing from an infinite distance object to a close distance object can be suppressed superbly.
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公开(公告)号：US20220236545A1
公开(公告)日：2022-07-28
申请号：US17722709
申请日：2022-04-18
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
Abstract: A zoom optical system comprises, in order from an object: a front lens group (GFS) having a positive refractive power; an M1 lens group (GM1) having a negative refractive power; an M2 lens group (GM2) having a positive refractive power; and an RN lens group (GRN) having a negative refractive power, wherein upon zooming, distances between the front lens group and the M1 lens group, between the M1 lens group and the M2 lens group, and between the M2 lens group and the RN lens group change, upon focusing from an infinite distant object to a short distant object, the RN lens group moves, and the M2 lens group comprises an A lens group that satisfies a following conditional expression, 1.10
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Patent Agency Ranking
26.发明申请公开(公告)号：US20220026692A1
公开(公告)日：2022-01-27
申请号：US17311683
申请日：2018-12-26
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA , Osamu GOMIBUCHI , Kenichi KITANO , Mizuki WAYU , Tsuneo WATANABE , Makoto HORIKOSHI , Ichiro IMAEI
Abstract: A zoom optical system (ZL) comprises a plurality of lens groups (G1-G7), and upon zooming distances between adjacent lens groups change. The zoom optical system comprises a focusing lens group (G5,G6) that moves upon focusing and an image-side lens group ((G7) disposed adjacent to an image side of the focusing lens group. The zoom optical system satisfies a following conditional expression. 0.000
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27.发明申请公开(公告)号：US20200341246A1
公开(公告)日：2020-10-29
申请号：US16764869
申请日：2017-11-20
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
Abstract: A variable magnification optical system comprising, in order from an object side, a first lens group and a plurality of lens groups; upon varying a magnification, a distance between the first lens group and the plurality of lens groups being varied, and distances between respective lens groups in the plurality of lens groups being varied; the plurality of lens groups comprising an object side focusing lens group which is moved upon carrying out focusing and at least one image side focusing lens group disposed in a more image side than the object side focusing lens group and moved with a trajectory differing from that of the object side focusing lens group, upon carrying out the focusing; and the predetermined conditional expressions being satisfied, whereby variations in aberrations upon varying magnification from the wide angle end state to the telephoto end state as well as variations in aberrations upon carrying out focusing from an infinite distance object to a close distance object can be suppressed superbly.
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28.发明申请公开(公告)号：US20200026048A1
公开(公告)日：2020-01-23
申请号：US16496420
申请日：2017-04-05
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
Abstract: A variable magnification optical system comprising, in order from an object side, a first lens group having negative refractive power, a first intermediate lens group having positive refractive power, a second intermediate lens group having negative refractive power and a rear lens group; upon varying a magnification from a wide angle end state to a telephoto end state, a distance between the first lens group and the first intermediate lens group being varied, a distance between the first intermediate lens group and the second intermediate lens group being varied, and a distance between the second intermediate lens group and the rear lens group being varied; the rear lens group comprising at least one focusing lens group which is moved upon carrying out focusing from an infinitely distant object to a closely distant object; and predetermined conditional expressions being satisfied, thereby the focusing lens group(s) being reduced in weight.
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29.发明申请公开(公告)号：US20190018226A1
公开(公告)日：2019-01-17
申请号：US15778251
申请日：2016-11-28
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
Abstract: A zoom optical system comprises, in order from an object: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; and a subsequent group (GR) including at least one lens group. Upon zooming, distances between the first lens group (G1) and the second lens group (G2) and between the second lens group (G2) and the subsequent group (GR) change. The subsequent group (GR) comprises a focusing group (Gfc) having negative refractive power for focusing. The first lens group (G1) comprises a 1-1st lens that has positive refractive power and is disposed closest to the object. The focusing group comprises a lens (L37) having positive refractive power and a lens (L38) having negative refractive power. Following conditional expressions are satisfied: 1.00
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30.发明申请公开(公告)号：US20170176725A1
公开(公告)日：2017-06-22
申请号：US15418770
申请日：2017-01-29
Applicant: Nikon Corporation
Inventor： Kosuke MACHIDA
CPC classification number: G02B15/14 , G02B5/005 , G02B13/009 , G02B13/02 , G02B13/04 , G02B13/18 , G02B15/15 , G02B15/16 , G02B15/167 , G02B15/173 , G02B15/177 , G02B15/20 , G02B15/22 , G02B27/0025 , G02B27/646 , H04N5/225 , H04N5/23212
Abstract: Composing, in order from an object side along the optical axis, a first lens group having positive refractive power, and at least one lens group; upon varying magnification, an interval between the first lens group and a lens group at an image side of the first lens group and adjacent thereto being varied, said first lens group comprising a focusing lens group which is moved along the optical axis for focusing and a vibration reducing lens group that is movable to include a component in a direction perpendicular to the optical axis, thereby providing a an excellent optical performance upon focusing.
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