公开(公告)号：US20230324657A1

公开(公告)日：2023-10-12

申请号：US18208677

申请日：2023-06-12

申请人： Nikon Corporation

发明人： Tomoyuki SASHIMA ,  Akihiko OBAMA

IPC分类号： G02B15/14 ,  G02B27/64

CPC分类号： G02B15/143105 ,  G02B27/646 ,  Y10T29/49826

摘要： A variable magnification optical system includes, in order from an object side, a first lens group having positive refractive power; a second lens group having negative refractive power; and a third lens group having positive refractive power; upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group and the second lens group and a distance between the second lens group and the third lens group being varied. The variable magnification optical system further includes a V lens group GV having negative refractive power and being moved to have a component in a direction perpendicular to the optical axis, and an F lens group GF having positive refractive power and being moved along the optical axis upon focusing from an infinitely distant object to a close object, the V lens group GV being disposed on the more object side than the F lens group GF. Thereby, it is possible to provide the compact variable magnification optical system with a high zoom ratio and high performance, an optical apparatus therewith and a method for manufacturing the variable magnification optical system.

公开(公告)号：US20180259755A1

公开(公告)日：2018-09-13

申请号：US15981523

申请日：2018-05-16

申请人： NIKON CORPORATION

发明人： Akihiko OBAMA ,  Masashi YAMASHITA

IPC分类号： G02B15/20 ,  G02B15/173 ,  G02B27/64

摘要： A variable magnification optical system has, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; an aperture stop; a third lens group having positive refractive power; and a rear lens group. Upon zooming from a wide-angle end state to a telephoto end state, at least the rear lens group is moved toward the object side, and distances between the lens groups are varied. Upon focusing from an infinitely distant object to a closely distant object, the third lens group is moved along the optical axis. At least a portion of the rear lens group constitutes a vibration reduction lens group having negative refractive power and moveable perpendicular to the optical axis. An optical apparatus and a method of manufacture are also provided.

公开(公告)号：US20170115472A1

公开(公告)日：2017-04-27

申请号：US15299451

申请日：2016-10-20

申请人： Nikon Corporation

发明人： Akihiko OBAMA ,  Kensuke UCHIDA

IPC分类号： G02B15/20 ,  G02B5/00 ,  G02B7/10 ,  G02B27/00 ,  G02B7/02

CPC分类号： G02B15/20 ,  G02B5/005 ,  G02B7/021 ,  G02B7/10 ,  G02B15/173 ,  G02B27/0025

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 positive refractive power, a fifth lens group (G5) are arranged in order from an object, and 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), a distance between the third lens group (G3) and the fourth lens group (G4), and a distance between the fourth lens group (G4) and the fifth lens group (G5) change upon zooming, and a lens group arranged closest to an image is approximately fixed against an image surface (I) upon zooming, and the third lens group (G3) moves along the optical axis upon focusing, and the following expression (1) is satisfied. 0.480

公开(公告)号：US20170075093A1

公开(公告)日：2017-03-16

申请号：US15331816

申请日：2016-10-22

申请人： Nikon Corporation

发明人： Tomoyuki SASHIMA ,  Akihiko OBAMA

IPC分类号： G02B15/173 ,  G02B15/20 ,  G02B5/00

CPC分类号： G02B15/173 ,  G02B5/005 ,  G02B13/009 ,  G02B13/18 ,  G02B15/20

摘要： A variable magnification optical system comprises, 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; upon varying magnification from a wide-angle end state to a telephoto end state, a distance between the first lens group and the second lens group, a distance between the second lens group and the third lens group, a distance between the third lens group and the fourth lens group and a distance between the fourth lens group and the fifth lens group being varied, the fifth lens group being moved with respect to the image plane; upon focusing the third lens group being moved along the optical axis; and the given conditional expressions being satisfied; thereby providing a small-size variable magnification optical system having a high variable magnification ratio and an excellent optical performance.

摘要翻译： 可变放大倍率光学系统从物体侧依次包括具有正折射光焦度的第一透镜组; 具有负屈光力的第二透镜组; 具有正折射力的第三透镜组; 具有正屈光力的第四透镜组; 和第五透镜组; 在从广角端状态到望远端状态的变化倍率上，第一透镜组和第二透镜组之间的距离，第二透镜组和第三透镜组之间的距离，第三透镜​​组与第三透镜组之间的距离， 第四透镜组和第四透镜组与第五透镜组之间的距离改变，第五透镜组相对于像平面移动; 在第三透镜组沿光轴移动时聚焦; 并且给定的条件表达式被满足; 从而提供具有高可变放大比和优异光学性能的小尺寸可变放大光学系统。

公开(公告)号：US20240151952A1

公开(公告)日：2024-05-09

申请号：US18412740

申请日：2024-01-15

申请人： Nikon Corporation

发明人： Akihiko OBAMA ,  Masashi YAMASHITA

IPC分类号： G02B15/14 ,  G02B15/20

CPC分类号： G02B15/144113 ,  G02B15/20

摘要： A variable magnification optical system has, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; an aperture stop; a third lens group having positive refractive power; and a rear lens group. Upon zooming from a wide-angle end state to a telephoto end state, at least the rear lens group is moved toward the object side, and distances between the lens groups are varied. Upon focusing from an infinitely distant object to a closely distant object, the third lens group is moved along the optical axis. At least a portion of the rear lens group constitutes a vibration reduction lens group having negative refractive power and moveable perpendicular to the optical axis. An optical apparatus and a method of manufacture are also provided.

公开(公告)号：US20180217363A1

公开(公告)日：2018-08-02

申请号：US15539033

申请日：2015-12-25

申请人： Nikon Corporation

发明人： Kensuke UCHIDA ,  Akihiko OBAMA ,  Norikazu YOKOI ,  Hiroshi YAMAMOTO ,  Taku MATSUO

IPC分类号： G02B15/20 ,  G02B13/02 ,  G03B5/02

CPC分类号： G02B15/20 ,  G02B13/02 ,  G03B5/02 ,  G03B2205/0046

摘要： A variable magnification optical system includes: a first lens group having a positive refractive power and arranged closest to an object; a negative lens group having a negative refractive power and arranged closer to an image than the first lens group; a positive lens group which has a positive refractive power, which includes at least one lens that moves integrally with an aperture stop, and which is arranged closer to the image than the negative lens group; and a focusing group arranged between the negative lens group and the positive lens group, wherein when varying magnification, a distance between the first lens group and the negative lens group is changed, and a distance between the negative lens group and the positive lens group is changed, wherein when focusing, a distance between the focusing group and a lens arranged at a position to face an object-side of the focusing group is changed, and a distance between the focusing group and a lens arranged at a position to face an image-side of the focusing group is changed, and wherein a predetermined conditional expression is satisfied.

公开(公告)号：US20180129026A1

公开(公告)日：2018-05-10

申请号：US15539017

申请日：2015-12-25

申请人： Nikon Corporation

发明人： Hiroshi YAMAMOTO ,  Taku MATSUO ,  Akihiko OBAMA ,  Kensuke UCHIDA

IPC分类号： G02B15/20 ,  G02B27/64 ,  G02B15/163

CPC分类号： G02B15/20 ,  G02B15/163 ,  G02B15/173 ,  G02B27/646

摘要： A variable magnification optical system includes: a first lens group having a positive refractive power and arranged closest to an object; a negative lens group having a negative refractive power and arranged closer to an image than the first lens group; and a focusing group arranged between the negative lens group and an aperture stop, wherein when varying magnification, the distance between the first lens group and the negative lens group is changed, and the distance between the negative lens group and the aperture stop is changed, wherein when focusing, the distance between the focusing group and a lens arranged at a position to face an object-side of the focusing group is changed, and the distance between the focusing group and a lens arranged at a position to face an image-side of the focusing group is changed, wherein the focusing group is constituted by one single lens having a positive refractive power, and a predetermined conditional expression is satisfied.

公开(公告)号：US20150226944A1

公开(公告)日：2015-08-13

申请号：US14693916

申请日：2015-04-23

申请人： NIKON CORPORATION

发明人： Akihiko OBAMA

IPC分类号： G02B15/16 ,  G02B27/00

CPC分类号： G02B15/16 ,  G02B15/173 ,  G02B27/0025

摘要： Comprising, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; an aperture stop S; a third lens group G3 having positive refractive power; and a fourth lens group G4 having positive refractive power; upon zooming from a wide-angle end state to a telephoto end state, the distance between the first lens group G1 and the second lens group G2, the distance between the second lens group G2 and the aperture stop S, the distance between the aperture stop S and the third lens group G3, and the distance between the third lens group G3 and the fourth lens group G4 being varied, and the distance between the aperture stop S and the fourth lens group G4 being constant; and a predetermined conditional expression being satisfied, thereby providing a variable magnification optical system which is compact in size and has a high variable magnification ratio and high optical performance, an optical apparatus, and a method for manufacturing a variable magnification optical system.

摘要翻译： 从物体侧起依次包括：具有正折射力的第一透镜组G1; 具有负屈光力的第二透镜组G2; 孔径光阑S; 具有正屈光力的第三透镜组G3; 和具有正折射光焦度的第四透镜组G4; 在从广角端状态变焦到望远端状态时，第一透镜组G1和第二透镜组G2之间的距离，第二透镜组G2与孔径光阑S之间的距离，孔径光阑 S和第三透镜组G3之间的距离，第三透镜​​组G3和第四透镜组G4之间的距离是变化的，并且孔径光阑S和第四透镜组G4之间的距离是恒定的; 并且满足预定的条件表达式，从而提供尺寸紧凑并且具有高可变放大率和高光学性能的可变放大光学系统，光学装置和用于制造可变倍率光学系统的方法。

公开(公告)号：US20180143413A1

公开(公告)日：2018-05-24

申请号：US15538989

申请日：2015-12-25

申请人： Nikon Corporation

发明人： Kensuke UCHIDA ,  Akihiko OBAMA ,  Hiroshi YAMAMOTO ,  Taku MATSUO

IPC分类号： G02B15/20 ,  G02B9/14 ,  G02B13/02

摘要： A variable magnification optical system includes: a first lens group (G1) having a positive refractive power and arranged closest to an object; a negative lens group (G2) having a negative refractive power and arranged closer to an image than the first lens group; a positive lens group (G4) which has a positive refractive power, which includes at least one lens that is arranged closer to the image than an aperture stop (S), and which is arranged closer to the image than the negative lens group; and a focusing group (G3) arranged between the negative lens group and the positive lens group, wherein when varying magnification, the first lens group moves with respect to an image plane, a distance between the first lens group and the negative lens group is changed, and a distance between the negative lens group and the positive lens group is changed, wherein when focusing, a distance between the focusing group and a lens arranged at a position to face an object-side of the focusing group is changed, and a distance between the focusing group and a lens arranged at a position to face an image-side of the focusing group is changed, and wherein a predetermined conditional expression is satisfied.

公开(公告)号：US20170299849A1

公开(公告)日：2017-10-19

申请号：US15636616

申请日：2017-06-28

申请人： NIKON CORPORATION

发明人： Akihiko OBAMA

IPC分类号： G02B15/16 ,  G02B27/00 ,  G02B15/173

CPC分类号： G02B15/16 ,  G02B15/173 ,  G02B27/0025

摘要： Comprising, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; an aperture stop S; a third lens group G3 having positive refractive power; and a fourth lens group G4 having positive refractive power; upon zooming from a wide-angle end state to a telephoto end state, the distance between the first lens group G1 and the second lens group G2, the distance between the second lens group G2 and the aperture stop S, the distance between the aperture stop S and the third lens group G3, and the distance between the third lens group G3 and the fourth lens group G4 being varied, and the distance between the aperture stop S and the fourth lens group G4 being constant; and a predetermined conditional expression being satisfied, thereby providing a variable magnification optical system which is compact in size and has a high variable magnification ratio and high optical performance, an optical apparatus, and a method for manufacturing a variable magnification optical system.