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公开(公告)号：US20230258907A1
公开(公告)日：2023-08-17
申请号：US18139801
申请日：2023-04-26
Applicant: Nikon Corporation
Inventor： Takeshi UMEDA
IPC: G02B9/60 , G02B15/177 , G02B15/14 , G02B13/02 , G02B27/00
CPC classification number: G02B9/60 , G02B15/177 , G02B15/145527 , G02B13/02 , G02B27/0025 , G02B27/646
Abstract: A zoom lens includes, in order from an object along an optical axis: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; a fourth lens group; and a fifth lens group. When the zoom lens performs varying magnification, the distance between the first and second lens groups changes, the distance between the second and third lens groups changes, the distance between the third and fourth lens groups changes, the distance between the fourth and fifth lens groups changes, the second and fourth lens groups move along the same trajectory along the optical axis, and at least the third lens group moves along the optical axis.
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公开(公告)号：US20230027556A1
公开(公告)日：2023-01-26
申请号：US17886406
申请日：2022-08-11
Applicant: Nikon Corporation
Inventor： Makoto FUJIMOTO , Takeshi UMEDA
IPC: G02B15/177 , G02B27/64 , G02B27/00 , G02B15/14
Abstract: A zoom lens includes a first lens group having negative refractive power; a second lens group having positive refractive power; a third lens group having negative refractive power and a fourth lens group having positive refractive power. Upon varying magnification, distances between the first lens group and the second lens group, between the second lens group and the third lens group and between the third lens group and the fourth lens group vary. The second lens group includes a front lens group, an aperture stop, and a rear lens group. Each of the front lens group and the rear lens group includes at least one positive lens. At least a part of the lenses in the second lens group is moved as a group to have a component in a direction perpendicular to an optical axis.
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公开(公告)号：US20220082807A1
公开(公告)日：2022-03-17
申请号：US17535915
申请日：2021-11-26
Applicant: Nikon Corporation
Inventor： Takeshi UMEDA
IPC: G02B15/14
Abstract: A variable magnification optical system 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, and a rear lens group having negative refractive power; upon varying a magnification from a wide angle end state to a tele photo end state, a distance between the first lens group and the second lens group being varied, a distance between the second lens group and the third lens group being varied, and a distance between the third lens group and the rear lens group being varied; the third lens group or the rear lens group comprising a focusing lens group which is moved upon carrying out focusing from an infinitely distant object to a closely distant object; and predetermined conditional expression(s) being satisfied, thereby various aberrations being corrected superbly.
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公开(公告)号：US20210103125A1
公开(公告)日：2021-04-08
申请号：US17123597
申请日：2020-12-16
Applicant: Nikon Corporation
Inventor： Takeshi UMEDA
Abstract: A zoom lens includes, in order from an object along an optical axis: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; a fourth lens group; and a fifth lens group. When the zoom lens performs varying magnification, the distance between the first and second lens groups changes, the distance between the second and third lens groups changes, the distance between the third and fourth lens groups changes, the distance between the fourth and fifth lens groups changes, the second and fourth lens groups move along the same trajectory along the optical axis, and at least the third lens group moves along the optical axis.
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公开(公告)号：US20250076611A1
公开(公告)日：2025-03-06
申请号：US18951505
申请日：2024-11-18
Applicant: Nikon Corporation
Inventor： Takeshi UMEDA
Abstract: A zoom lens includes, in order from an object along an optical axis: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; a fourth lens group; and a fifth lens group. When the zoom lens performs varying magnification, the distance between the first and second lens groups changes, the distance between the second and third lens groups changes, the distance between the third and fourth lens groups changes, the distance between the fourth and fifth lens groups changes, the second and fourth lens groups move along the same trajectory along the optical axis, and at least the third lens group moves along the optical axis.
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Patent Agency Ranking
6.发明申请公开(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
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
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7.发明申请公开(公告)号：US20200241264A1
公开(公告)日：2020-07-30
申请号：US16645484
申请日：2017-09-11
Applicant: Nikon Corporation
Inventor： Takeshi UMEDA
IPC: G02B15/14
Abstract: A variable magnification optical system 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, and a rear lens group having positive refractive power; upon varying a magnification, a distance between the first lens group and the second lens group being varied, a distance between the second lens group and the third lens group being varied, and a distance between the third lens group and the rear lens group being varied; the rear lens group comprising a focusing lens group which is moved upon carrying out focusing from an infinitely distant object to a closely distant object; and predetermined conditional expression(s) being satisfied, thereby various aberrations being corrected superbly.
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公开(公告)号：US20180196240A1
公开(公告)日：2018-07-12
申请号：US15916186
申请日：2018-03-08
Applicant: NIKON CORPORATION
Inventor： Makoto FUJIMOTO , Takeshi UMEDA
IPC: G02B15/177 , G02B27/00 , G02B15/163 , G02B27/64
CPC classification number: G02B15/177 , G02B15/163 , G02B27/0025 , G02B27/646
Abstract: A zoom lens comprises, in order from an object side: a first lens group G1 having negative refractive power; a second lens group G2 having positive refractive power; a third lens group G3 having negative refractive power and a fourth lens group G4 having positive refractive power. Upon varying magnification, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3 and a distance between the third lens group G3 and the fourth lens group G4 are varied. The second lens group G2 includes, in order from the object side, a front lens group G2F, an aperture stop S, and a rear lens group G2R. Each of the front lens group G2F and the rear lens group G2R includes at least one negative lens. At least a part of the lenses in the second lens group G2 is moved as a movable group to have a component in a direction perpendicular to the optical axis. Thus, the zoom lens can have high optical performances.
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9.发明公开公开(公告)号：US20240142755A1
公开(公告)日：2024-05-02
申请号：US18408738
申请日：2024-01-10
Applicant: Nikon Corporation
Inventor： Takeshi UMEDA
IPC: G02B15/14
CPC classification number: G02B15/144113 , G02B15/145113 , G02B15/1461 , G02B13/18
Abstract: A variable magnification optical system 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, and a rear lens group having positive refractive power; upon varying a magnification, a distance between the first lens group and the second lens group being varied, a distance between the second lens group and the third lens group being varied, and a distance between the third lens group and the rear lens group being varied; the rear lens group comprising a focusing lens group which is moved upon carrying out focusing from an infinitely distant object to a closely distant object; and predetermined conditional expression(s) being satisfied, thereby various aberrations being corrected superbly.
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10.发明申请公开(公告)号：US20220155572A1
公开(公告)日：2022-05-19
申请号：US17588269
申请日：2022-01-29
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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