公开(公告)号：US20240288661A1

公开(公告)日：2024-08-29

申请号：US18636549

申请日：2024-04-16

申请人： Nikon Corporation

发明人： Kosuke MACHIDA

IPC分类号： G02B9/10 ,  G02B5/00 ,  G02B9/12 ,  G02B9/34 ,  G02B9/60 ,  G02B9/62 ,  G02B9/64 ,  G02B13/00 ,  G02B13/18 ,  G02B15/14 ,  G02B15/163 ,  G02B15/17 ,  G02B15/20 ,  G02B15/22

CPC分类号： G02B9/10 ,  G02B15/142 ,  G02B15/143105 ,  G02B15/1451 ,  G02B15/145121 ,  G02B15/163 ,  G02B15/20 ,  G02B15/22 ,  G02B5/005 ,  G02B9/12 ,  G02B9/34 ,  G02B9/60 ,  G02B9/62 ,  G02B9/64 ,  G02B13/0045 ,  G02B13/009 ,  G02B13/18 ,  G02B15/14 ,  G02B15/17

摘要： A zoom optical system comprises, in order from an object: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; and a subsequent group (GR) including at least one lens group. Upon zooming, distances between the first lens group (G1) and the second lens group (G2) and between the second lens group (G2) and the subsequent group (GR) change. The subsequent group (GR) comprises a focusing group (Gfc) having negative refractive power for focusing. The first lens group (G1) comprises a 1-1st lens that has positive refractive power and is disposed closest to the object. A following conditional expression is satisfied:




0.2

公开(公告)号：US20190041039A1

公开(公告)日：2019-02-07

申请号：US16156794

申请日：2018-10-10

申请人： Robe Lighting s.r.o.

发明人： Jan Vilem ,  Josef Valchar

IPC分类号： F21V14/06 ,  F21S10/00 ,  G02B7/10

CPC分类号： G02B15/173 ,  F21S10/007 ,  F21V5/008 ,  F21V14/06 ,  F21W2131/107 ,  F21W2131/406 ,  G02B7/04 ,  G02B7/08 ,  G02B7/102 ,  G02B13/16 ,  G02B15/14 ,  G02B15/15 ,  G02B15/163

摘要： A zoom optical system and automated luminaire are provided. The zoom optical system includes a light source and compensator, variator, and objective lens groups. The light source illuminates an object in an object plane. The compensator lens group is optically coupled to the object without intervening lenses, has a positive optical power, six lenses, and moves relative to the object plane. The variator lens group is optically coupled to the compensator lens group without intervening lenses, has a negative optical power, three lenses, and moves relative to the object plane and the compensator group. The objective lens group is optically coupled to the variator lens group without intervening lenses, has a second positive optical power, three lenses, remains in a fixed position relative to the object plane, and projects an image of the object without intervening lenses between the objective lens group and the projected image.

公开(公告)号：US20180188508A1

公开(公告)日：2018-07-05

申请号：US15854280

申请日：2017-12-26

申请人： FUJIFILM Corporation

发明人： Takuya TANAKA ,  Masaru YONEZAWA

IPC分类号： G02B15/14 ,  G02B13/06 ,  G02B13/02

CPC分类号： G02B15/14 ,  G02B13/02 ,  G02B13/06 ,  G02B15/163 ,  G02B15/24

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 positive refractive power; a third lens group that has a negative refractive power; a fourth lens group; and a fifth lens group that has a positive refractive power. The first lens group and the fifth lens group remain stationary with respect to an image plane during zooming. The second lens group, the third lens group, and the fourth lens group are moved by changing distances between the lens groups and adjacent groups in a direction of an optical axis during zooming, and are positioned to be closer to the image side at a telephoto end than at a wide-angle end. Conditional Expression (1) is satisfied. 0.8

公开(公告)号：US10012822B2

公开(公告)日：2018-07-03

申请号：US15419143

申请日：2017-01-30

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Takahiro Kitada ,  Shunichiro Yoshinaga ,  Takakazu Bito

IPC分类号： G02B27/64 ,  G02B15/14 ,  G02B15/163 ,  G02B15/20 ,  G02B15/22

CPC分类号： G02B15/163 ,  G02B15/173 ,  G02B15/20 ,  G02B15/22 ,  G02B27/646

摘要： The zoom lens system includes a first lens group with positive power, a second lens group with negative power, a third lens group with positive power, a fourth lens group with negative power, and a fifth lens group with positive power. An aperture stop is provided between the second and the third lens groups. The third lens group includes lens element L3a and L3b with positive power, lens element L3c with negative power, and lens element L3d with positive power. The lens elements L3c and L3d are cemented. The lens element L3b corrects image blurring. The fourth lens group moves when focusing. When zooming, the first to the fourth lens group move.Here, condition (1) below is satisfied. 0.24

公开(公告)号：US09964744B2

公开(公告)日：2018-05-08

申请号：US14857206

申请日：2015-09-17

申请人： OLYMPUS CORPORATION

发明人： Kazuteru Kawamura ,  Akiko Naito ,  Keitaro Yokoyama ,  Toshio Takahashi

IPC分类号： G02B15/14 ,  G02B13/18 ,  G02B9/60 ,  G02B15/163 ,  G02B15/177 ,  G02B5/00 ,  G02B27/00 ,  H04N5/225 ,  H04N5/262 ,  G02B7/10 ,  G02B13/00 ,  G02B9/34 ,  G02B15/16 ,  G02B15/20 ,  G02B9/00 ,  G02B13/04

CPC分类号： G02B15/163 ,  G02B5/005 ,  G02B7/10 ,  G02B9/00 ,  G02B9/34 ,  G02B9/60 ,  G02B13/0015 ,  G02B13/004 ,  G02B13/0045 ,  G02B13/009 ,  G02B13/04 ,  G02B13/18 ,  G02B15/14 ,  G02B15/16 ,  G02B15/177 ,  G02B15/20 ,  G02B27/0025 ,  H04N5/2254 ,  H04N5/2628

摘要： A zoom lens comprises four lens unit, and at the time of zooming, each of a distance between a first positive lens unit and a first negative lens unit and a distance between a second negative lens unit and a second positive lens unit changes, and a distance between the first positive lens unit and the second negative lens unit widens more at the telephoto end than at the wide angle end, and the first positive lens unit includes an object-side sub-lens unit and an image-side sub-lens unit, and an aperture stop is disposed between the object-side sub-lens unit and the image-side sub-lens unit, and the first negative lens unit includes a negative lens and a positive lens, and a refracting surface nearest to an image in the first negative lens unit is concave toward the image side, and a refracting surface nearest to an object in the second positive lens unit is concave toward the object side, and a refracting surface nearest to the image in the second positive lens unit is convex toward the image side, and the zoom lens satisfies predetermined conditional expressions.

公开(公告)号：US09939621B2

公开(公告)日：2018-04-10

申请号：US14909139

申请日：2014-07-10

申请人： Nikon Corporation

发明人： Makoto Fujimoto ,  Takeshi Umeda

IPC分类号： G02B27/64 ,  G02B15/177 ,  G02B15/163 ,  G02B27/00

CPC分类号： G02B15/177 ,  G02B15/163 ,  G02B27/0025 ,  G02B27/646

摘要： A zoom lens comprises 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 negative 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.

公开(公告)号：US20180095256A1

公开(公告)日：2018-04-05

申请号：US15707221

申请日：2017-09-18

申请人： CANON KABUSHIKI KAISHA

发明人： Shunji Iwamoto ,  Shinichiro Saito ,  Satoshi Maetaki ,  Takahiro Hatada ,  Suguru Inoue

IPC分类号： G02B15/163 ,  G02B9/64 ,  C03C3/064

CPC分类号： G02B15/163 ,  C03C3/064 ,  G02B9/64 ,  G02B13/18 ,  G02B15/177

摘要： An optical system includes a negative lens satisfying the following conditional expressions: 30≦νd≦40, 1.225≦[nd−(14.387/νd)]≦1.276, and 0.4300≦[θgF−(2.9795/νd)]≦0.5010, where νd is an Abbe number of the negative lens, θgF is a partial dispersion ratio of the negative lens at a g-line and an F-line, and nd is a refractive index of the negative lens at a d-line.

公开(公告)号：US20180095242A1

公开(公告)日：2018-04-05

申请号：US15707203

申请日：2017-09-18

申请人： CANON KABUSHIKI KAISHA

发明人： Shunji Iwamoto ,  Shinichiro Saito ,  Satoshi Maetaki ,  Takahiro Hatada ,  Suguru Inoue

IPC分类号： G02B9/64 ,  G02B9/12 ,  G02B9/34 ,  G02B13/00 ,  G02B15/163 ,  G02B7/36

CPC分类号： G02B9/64 ,  G02B7/36 ,  G02B9/12 ,  G02B9/34 ,  G02B13/004 ,  G02B15/163 ,  G02B15/173 ,  G02B27/0062

摘要： An optical system used in an imaging apparatus includes an optical element. In a case where the optical element is disposed on a magnification side with respect to an intersection point of an optical axis and a chief paraxial ray, the optical element is a negative lens, and in a case where the optical element is disposed on a reduction side with respect to the intersection point, the optical element is a positive lens. The optical element is configured to satisfy all of the following conditional expressions: 30≦νd≦40 1.225≦[nd−(14.387/νd)]≦1.276 0.4300≦[θgF−(2.9795/νd)]≦0.5010, where νd represents an Abbe number of the optical element, θgF is a partial dispersion ratio of the optical element for g-line and F-line, and nd is a refractive index of the optical element for d-line.

公开(公告)号：US20180059389A1

公开(公告)日：2018-03-01

申请号：US15686260

申请日：2017-08-25

申请人： FUJIFILM Corporation

发明人： Kazuki INOUE ,  Yukiko NAGATOSHI

IPC分类号： G02B15/167 ,  G02B15/20 ,  G02B13/16 ,  G02B15/177

CPC分类号： G02B15/167 ,  G02B13/16 ,  G02B15/163 ,  G02B15/177 ,  G02B15/20

摘要： In the zoom lens, a first optical system is formed on the magnification side, and a second optical system is formed on the reduction side, with the intermediate image formed between the first optical system and the second optical system. The second optical system consists of, in order from the magnification side, a first lens group that has a positive power, a second lens group that has a positive power, a third lens group that has a positive or negative power, and a fourth lens group that has a positive power. During zooming, the second lens group and the third lens group are moved by changing spacings between the groups adjacent to each other in a direction of an optical axis, and the fourth lens group remains stationary with respect to the reduction side imaging plane.

公开(公告)号：US09874730B2

公开(公告)日：2018-01-23

申请号：US14700276

申请日：2015-04-30

申请人： NIKON CORPORATION

发明人： Tomoyuki Sashima ,  Akihiko Obama

IPC分类号： G02B15/163 ,  G02B27/00 ,  G02B13/18 ,  G02B15/173 ,  G02B15/20

CPC分类号： G02B15/163 ,  G02B13/18 ,  G02B15/173 ,  G02B15/20 ,  G02B27/0025

摘要： Composing, 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 zooming 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, and predetermined conditional expression being satisfied, thereby providing a small-size variable magnification optical system having a high zoom ratio and a high optical performance, an optical apparatus, and a method for manufacturing the variable magnification optical system.