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公开(公告)号：US10545319B2
公开(公告)日：2020-01-28
申请号：US15976666
申请日：2018-05-10
Applicant: NIKON CORPORATION
Inventor： Atsushi Shibayama
IPC: G02B15/14 , G02B15/177 , G02B15/20 , G02B13/00 , G02B13/18 , G03B17/08 , G03B3/00 , G03B17/12 , G02B15/17 , G02B5/00 , G02B15/173 , G02B27/00 , H04N5/225 , H04N5/232
Abstract: In an optical system (ZL) capable of imaging in a plurality of object side media (for instance, air and water) whose refractive indexes are different from each other, the optical system is composed of, in order from an object, a front lens group (G1) whose position in an optical axis fixed, and a rear lens group (for instance, G2 to G4), and the rear lens group comprises at least two moving lens groups (for instance, G2 and G3), and at least two moving lens groups in the rear lens group are moved along the optical axis upon changing between object side media.
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2.发明授权公开(公告)号：US11269167B2
公开(公告)日：2022-03-08
申请号：US16334021
申请日：2017-10-05
Applicant: Nikon Corporation
Inventor： Takeshi Umeda , Tomoki Ito , Atsushi Shibayama
Abstract: A zoom optical system (ZL) comprises: a first lens group (G1) disposed closest to an object and having a positive refractive power; an aperture stop (S) disposed closer to an image than the first lens group (G1); a positive lens component disposed so as to oppose the image side of the aperture stop (S); and a lens group (G3) having the positive lens component, wherein a distance between the first lens group (G1) and the lens group (G3) having the positive lens component changes during zooming, at least one lens surface of the positive lens component has an aspherical surface, and the following conditional expression, 0.40
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公开(公告)号：US11635603B2
公开(公告)日：2023-04-25
申请号：US16995196
申请日：2020-08-17
Applicant: Nikon Corporation
Inventor： Atsushi Shibayama , Kosuke Machida
IPC: G02B15/14 , G02B15/22 , G02B15/173 , G02B13/00
Abstract: Provided is a variable power optical system (ZL) used for an optical apparatus such as a camera (1). The variable power optical system (ZL) includes, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having negative refractive power; a fourth lens group having positive refractive power; and a fifth lens group. Upon zooming from a wide-angle end state to a telephoto end state, a distance between each of the lens groups changes, and upon focusing from an object at infinity to an object at a close distance, the third lens group moves in the optical axis direction.
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4.发明授权公开(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
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
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公开(公告)号：US09989742B2
公开(公告)日：2018-06-05
申请号：US15212230
申请日：2016-07-16
Applicant: Nikon Corporation
Inventor： Atsushi Shibayama
IPC: G02B15/14 , G02B15/177 , G02B15/20 , G02B13/00 , G02B13/18 , G03B17/08 , G02B15/17 , G03B3/00 , G03B17/12 , G02B5/00 , G02B15/173 , G02B27/00 , H04N5/225 , H04N5/232
CPC classification number: G02B15/14 , G02B5/005 , G02B13/009 , G02B13/18 , G02B15/17 , G02B15/173 , G02B15/177 , G02B15/20 , G02B27/0025 , G03B3/00 , G03B17/08 , G03B17/12 , H04N5/2254 , H04N5/23212
Abstract: In an optical system (ZL) capable of imaging in a plurality of object side media (for instance, air and water) whose refractive indexes are different from each other, the optical system is composed of, in order from an object, a front lens group (G1) whose position in an optical axis fixed, and a rear lens group (for instance, G2 to G4), and the rear lens group comprises at least two moving lens groups (for instance, G2 and G3), and at least two moving lens groups in the rear lens group are moved along the optical axis upon changing between object side media.
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Patent Agency Ranking
公开(公告)号：US11520127B2
公开(公告)日：2022-12-06
申请号：US16885722
申请日：2020-05-28
Applicant: Nikon Corporation
Inventor： Atsushi Shibayama
Abstract: A variable magnification optical system includes, in order from an object: a first lens group (G1) having a negative refractive power; a second lens group (G2); a third lens group (G3); a fourth lens group (G4) having a negative refractive power; and a fifth lens group (G5) having a positive refractive power, the system performing varying magnification by changing the distance between the first and second lens groups, the distance between the second and third lens groups, the distance between the third and fourth lens groups, and the distance between the fourth and fifth lens groups, and the fourth lens group including a 42nd lens group (G42) configured to be movable so as to have a component in a direction orthogonal to an optical axis and a 41st lens group (G41) disposed at an object-side of the 42nd lens group.
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公开(公告)号：US11415787B2
公开(公告)日：2022-08-16
申请号：US16752686
申请日：2020-01-26
Applicant: Nikon Corporation
Inventor： Atsushi Shibayama
Abstract: A variable magnification optical system includes, in order from an object: 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. The system performs varying magnification by changing the distance between the first lens group and the second lens group, the distance between the second lens group and the third lens group, and the distance between the third lens group and the fourth lens group. The third lens group includes a 32nd lens group (G32) configured to be movable so as to have a component in a direction orthogonal to an optical axis in order to correct image blur as a vibration-reduction lens group (VR) and a 31st lens group (G31) disposed at an object-side of the 32nd lens group. The 32nd lens group has negative refractive power, and the system satisfies Conditional Expression (1) below. 0.200
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公开(公告)号：US10606047B2
公开(公告)日：2020-03-31
申请号：US15545704
申请日：2016-01-29
Applicant: Nikon Corporation
Inventor： Atsushi Shibayama
Abstract: A variable magnification optical system includes, in order from an object: 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. The system performs varying magnification by changing the distance between the first lens group and the second lens group, the distance between the second lens group and the third lens group, and the distance between the third lens group and the fourth lens group. The third lens group includes a 32nd lens group (G32) configured to be movable so as to have a component in a direction orthogonal to an optical axis in order to correct image blur as a vibration-reduction lens group (VR) and a 31st lens group (G31) disposed at an object-side of the 32nd lens group. The 32nd lens group has negative refractive power, and the system satisfies Conditional Expression (1) below. 0.200
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9.发明授权公开(公告)号：US12085701B2
公开(公告)日：2024-09-10
申请号：US17495657
申请日：2021-10-06
Applicant: Nikon Corporation
Inventor： Takeshi Umeda , Tomoki Ito , Atsushi Shibayama
CPC classification number: G02B15/20 , G02B13/18 , G02B27/646
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-
10.发明授权公开(公告)号：US11953664B2
公开(公告)日：2024-04-09
申请号：US17588269
申请日：2022-01-29
Applicant: Nikon Corporation
Inventor： Takeshi Umeda , Tomoki Ito , Atsushi Shibayama
CPC classification number: G02B15/145105 , G02B15/143103 , G02B15/20 , H04N23/69 , G02B13/18 , G03B2205/0046
Abstract: A zoom optical system includes a positive first lens group, a negative second lens group disposed on an image side of the first lens group, a positive third lens group disposed on an image side of the second lens group, a negative fourth lens group disposed on an image side of the third lens group, and a final lens group disposed on an image side of the fourth lens group and closest to an image. During zooming, distances between lens groups change, and the first lens group moves along an optical axis. A negative focusing lens group is provided, and the final lens group is disposed on an image side of the focusing lens group. A negative vibration proof group of the second lens group may include, in order from an object, a negative lens, an air gap and a cemented lens of a negative lens and a positive lens. The final lens group may have negative refractive power.
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