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1.发明公开公开(公告)号：US20240302635A1
公开(公告)日：2024-09-12
申请号：US18656533
申请日：2024-05-06
申请人： Nikon Corporation
发明人： Satoru SHIBATA , Tomoyuki SASHIMA
IPC分类号： G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/145113 , G02B15/145129 , G02B15/1461 , G02B15/173 , G02B27/646
摘要： A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a vibration-proof lens group that is movable with a displacement component in a direction orthogonal to an optical axis, and at least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, the front-side lens group and the intermediate lens group, the intermediate lens group and the rear-side lens group change. The following conditional expression is satisfied:
0.20-
2.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
申请人： Nikon Corporation
发明人： Takeshi UMEDA
IPC分类号： G02B15/14
CPC分类号： G02B15/144113 , G02B15/145113 , G02B15/1461 , G02B13/18
摘要： 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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3.发明公开公开(公告)号：US20240134172A1
公开(公告)日：2024-04-25
申请号：US18401665
申请日：2024-01-01
申请人： Nikon Corporation
发明人： Tomoki ITO
CPC分类号： G02B15/145113 , G02B13/009 , G02B15/20
摘要： 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, a fourth lens group having positive refractive power, and a fifth lens group having negative refractive power; upon varying a magnification, the first lens group being fixed with respect to the image plane, and each distance between the neighboring lens groups being varied; upon focusing, at least a portion of the fourth lens group being moved; and predetermined conditional expression(s) being satisfied, thereby variations in various aberrations upon varying magnification being superbly suppressed.
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4.发明公开公开(公告)号：US20230367108A1
公开(公告)日：2023-11-16
申请号：US18226247
申请日：2023-07-25
申请人： Nikon Corporation
发明人： Satoru SHIBATA , Tomoyuki SASHIMA
IPC分类号： G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/145113 , G02B15/1461 , G02B15/145129 , G02B15/173 , G02B27/646
摘要： A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, the first lens group is moved with respect to an image surface and distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. The following conditional expressions are satisfied:
−0.750-
5.发明公开公开(公告)号：US20240231060A9
公开(公告)日：2024-07-11
申请号：US18401665
申请日：2024-01-01
申请人： Nikon Corporation
发明人： Tomoki ITO
CPC分类号： G02B15/145113 , G02B13/009 , G02B15/20
摘要： 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, a fourth lens group having positive refractive power, and a fifth lens group having negative refractive power; upon varying a magnification, the first lens group being fixed with respect to the image plane, and each distance between the neighboring lens groups being varied; upon focusing, at least a portion of the fourth lens group being moved; and predetermined conditional expression(s) being satisfied, thereby variations in various aberrations upon varying magnification being superbly suppressed.
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公开(公告)号：US11933951B2
公开(公告)日：2024-03-19
申请号：US17393379
申请日：2021-08-03
申请人： Nikon Corporation
发明人： Takeshi Umeda
CPC分类号： G02B15/144113 , G02B15/145113 , G02B15/1461 , G02B13/18
摘要： 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：US11740444B2
公开(公告)日：2023-08-29
申请号：US17717014
申请日：2022-04-08
申请人： Nikon Corporation
发明人： Satoru Shibata , Tomoyuki Sashima
IPC分类号： G02B15/20 , G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/145113 , G02B15/1461 , G02B15/145129 , G02B15/173 , G02B27/646
摘要： A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. The following conditional expressions are satisfied:
−10.000-
公开(公告)号：US12072478B2
公开(公告)日：2024-08-27
申请号：US17820846
申请日：2022-08-18
发明人： Takumi Suzuki
CPC分类号： G02B15/145105 , G02B15/145103 , G02B15/145113 , G02B15/145121 , G02B15/145511 , G02B15/1461 , G02B15/22
摘要： In an optical system according to each exemplary embodiment, an interval between adjacent lens units changes in focusing from an infinite-distance object to a close-distance object, and a first in-focus state in which β=−1.2 is obtained can be caused, where β is a lateral magnification of an entire system. The optical system according to each exemplary embodiment includes a plurality of focus lens units, and out of a focus lens unit having a largest absolute value of a focus sensitivity and a focus lens unit having a second largest absolute value of a focus sensitivity in a state in which focus is put on an infinite-distance object, a focus lens unit disposed on an object side is a lens unit LA, and a focus lens unit disposed on an image side is a lens unit LB. A partial optical system LC including all lenses disposed on the image side of the lens unit LB has negative refractive power. The partial optical system LC satisfies a predetermined conditional expression.
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公开(公告)号：US12025783B2
公开(公告)日：2024-07-02
申请号：US18226247
申请日：2023-07-25
申请人： Nikon Corporation
发明人： Satoru Shibata , Tomoyuki Sashima
IPC分类号： G02B15/14 , G02B15/173 , G02B27/64
CPC分类号： G02B15/145113 , G02B15/145129 , G02B15/1461 , G02B15/173 , G02B27/646
摘要： A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, the first lens group is moved with respect to an image surface and distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. The following conditional expressions are satisfied:
−0.750-
公开(公告)号：US20230273414A1
公开(公告)日：2023-08-31
申请号：US18172372
申请日：2023-02-22
发明人： Tomoki TOKITA
CPC分类号： G02B15/145113 , G02B27/0025 , G02B13/0045
摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a positive refractive power, and a fifth lens unit having a negative refractive power. During zooming, each distance between adjacent lens units changes. During zooming from a wide-angle end to a telephoto end, the first lens unit moves toward the object side, a distance between the third lens unit and the fourth lens unit decreases, and a distance between the fourth lens unit and the fifth lens unit decreases. The number of optical elements each having a refractive power in the first lens unit is two or less. Predetermined conditions are satisfied.
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