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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：US11914125B2
公开(公告)日：2024-02-27
申请号：US17067898
申请日：2020-10-12
申请人： Nikon Corporation
发明人： Atsushi Suzuki , Kenji Ishida , Saburo Masugi
CPC分类号： G02B15/16 , G02B5/208 , G02B15/1461 , G02B15/145105 , G02B15/145117 , G02B15/145121 , G02B15/145129 , G02B15/20
摘要： A first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, a fourth lens group (G4) having negative refractive power, and a fifth lens group (G5) having positive refractive power are arranged in order from an object, and zooming is performed by changing distances between each lens group, and the first lens group (G1) is composed of three or more lenses, the fourth lens group (G4) is composed of two or less lenses, and the fifth lens group (G5) is composed of two or less lenses and moves to an image surface side upon zooming from a wide angle end state to a telephoto end state, and the following conditional expression (1) is satisfied.
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公开(公告)号：US20240288675A1
公开(公告)日：2024-08-29
申请号：US18652517
申请日：2024-05-01
发明人： Shohei Kikuchi
CPC分类号： G02B15/1461 , G02B15/145105 , G02B3/02
摘要： A zoom lens ZL includes: a first lens unit L1 having a positive refractive power, a second lens unit L2 having a negative refractive power, and a third lens unit L3 having a positive refractive power, an N−1th lens unit, and an Nth lens unit, the lens units being arranged in order from an object side to an image side. The N−1th lens unit and the Nth lens unit are located on the image side with respect to an aperture stop SP.
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公开(公告)号：US20240151954A1
公开(公告)日：2024-05-09
申请号：US18413408
申请日：2024-01-16
申请人： Nikon Corporation
发明人： Atsushi SUZUKI , Kenji ISHIDA , Saburo MASUGI
CPC分类号： G02B15/16 , G02B5/208 , G02B15/145105 , G02B15/145117 , G02B15/145121 , G02B15/145129 , G02B15/1461 , G02B15/20
摘要： A first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, a fourth lens group (G4) having negative refractive power, and a fifth lens group (G5) having positive refractive power are arranged in order from an object, and zooming is performed by changing distances between each lens group, and the first lens group (G1) is composed of three or more lenses, the fourth lens group (G4) is composed of two or less lenses, and the fifth lens group (G5) is composed of two or less lenses and moves to an image surface side upon zooming from a wide angle end state to a telephoto end state, and the following conditional expression (1) is satisfied.
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5.发明公开公开(公告)号：US20240077709A1
公开(公告)日：2024-03-07
申请号：US18367995
申请日：2023-09-13
申请人： Nikon Corporation
发明人： Takeshi UMEDA
IPC分类号： G02B15/14
CPC分类号： G02B15/144105 , G02B15/145105 , G02B15/145121 , G02B15/1461
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 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：US20230305276A1
公开(公告)日：2023-09-28
申请号：US18182104
申请日：2023-03-10
申请人： FUJIFILM Corporation
发明人： Taiga NODA
CPC分类号： G02B15/145105 , G02B27/0025 , G02B13/009 , G02B13/02
摘要： The zoom lens consists of, in order from an object side, a first lens group that has a positive refractive power, a second lens group that has a negative refractive power, a middle group that includes one or more lens groups, and a final lens group. The middle group has a positive refractive power as a whole throughout an entire zoom range. During zooming, a spacing between the first lens group and the second lens group changes, a spacing between the second lens group and the middle group changes, and a spacing between the middle group and the final lens group changes. The zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US20240295723A1
公开(公告)日：2024-09-05
申请号：US18526915
申请日：2023-12-01
申请人： Tamron Co., Ltd.
发明人： Takahiko SAKAI
CPC分类号： G02B15/145105 , G02B9/64 , G02B13/02
摘要： A zoom lens includes, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a negative fourth lens group, and a negative fifth lens group, and magnifies by changing an interval on an optical axis between adjacent lens groups. The third lens group includes an object side portion group arranged on an object side with a widest air interval in the third lens group and an image side portion group arranged on an image side of the object side portion group, and the second lens group moves along the optical axis at a time of magnification change. The object side portion group and the image side portion group each include a positive lens, a positive lens, and a negative lens arranged in order from the object side. Further, an imaging device including the zoom lens is provided.
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公开(公告)号：US12007541B2
公开(公告)日：2024-06-11
申请号：US17820216
申请日：2022-08-16
发明人： Shohei Kikuchi
CPC分类号： G02B15/1461 , G02B15/145105 , G02B3/02
摘要： A zoom lens ZL includes: a first lens unit L1 having a positive refractive power, a second lens unit L2 having a negative refractive power, and a third lens unit L3 having a positive refractive power, an N−1th lens unit, and an Nth lens unit, the lens units being arranged in order from an object side to an image side. The N−1th lens unit and the Nth lens unit are located on the image side with respect to an aperture stop SP.
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9.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
申请人： Nikon Corporation
发明人： Takeshi Umeda , Tomoki Ito , Atsushi Shibayama
CPC分类号： G02B15/145105 , G02B15/143103 , G02B15/20 , H04N23/69 , G02B13/18 , G03B2205/0046
摘要： 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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公开(公告)号：US11789245B2
公开(公告)日：2023-10-17
申请号：US17535915
申请日：2021-11-26
申请人： Nikon Corporation
发明人： Takeshi Umeda
IPC分类号： G02B15/14
CPC分类号： G02B15/144105 , G02B15/1461 , G02B15/145105 , G02B15/145121
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 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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