公开(公告)号：US20210396977A1

公开(公告)日：2021-12-23

申请号：US17351830

申请日：2021-06-18

申请人： FUJIFILM Corporation

发明人： Takuya TANAKA ,  Shinkichi IKEDA

IPC分类号： G02B15/20 ,  G02B15/14

摘要： The variable magnification optical system consists of a positive first lens group, an intermediate group, and a subsequent group in order from an object side to an image side, and does not form an intermediate real image in the entire zooming range. During zooming in a first zooming mode, a distance between the first lens group and the intermediate group changes, all distances between adjacent lens groups in the intermediate group change, a distance between the intermediate group and the subsequent group changes, and all distances between adjacent lens groups in the subsequent group are stationary. During zooming in the second zooming mode, all lens groups in the first lens group and the intermediate group are stationary, and all the distances of the adjacent lens groups in the subsequent group change. The zooming in the first zooming mode and the zooming in the second zooming mode can be independent.

公开(公告)号：US20180299642A1

公开(公告)日：2018-10-18

申请号：US16014027

申请日：2018-06-21

申请人： FUJIFILM Corporation

发明人： Masaru YONEZAWA ,  Shinkichi IKEDA

IPC分类号： G02B7/10 ,  G02B15/20 ,  G02B15/167 ,  G02B13/18

摘要： The zoom lens includes, in order from the object side: a first lens group G1 that has a positive refractive power and remains stationary during zooming; a plurality of movable lens groups that move by changing distances between groups adjacent to each other in a direction of an optical axis during zooming; and a final lens group Ge that has a positive refractive power and remains stationary during zooming. At least one movable lens group has a negative refractive power. The first lens group G1 has an image side positive lens, which is a positive lens disposed to be closest to the image side, and one or more positive lenses which are disposed to be closer to the object side than the image side positive lens. The zoom lens satisfies predetermined conditional expressions relating to the image side positive lens.

公开(公告)号：US20200004000A1

公开(公告)日：2020-01-02

申请号：US16451698

申请日：2019-06-25

申请人： FUJIFILM Corporation

发明人： Shinkichi IKEDA ,  Takuya TANAKA

IPC分类号： G02B15/16

摘要： A zoom lens consists of a positive first lens group that is fixed during zooming, a negative second lens group that moves during zooming, a positive third lens group that moves during zooming, a positive fourth lens group that moves during zooming, and a positive fifth lens group that is fixed during zooming. During zooming from a wide angle end to a telephoto end, the fourth lens group moves from an image side to an object side, the second lens group and a composite group consisting of the third lens group and the fourth lens group pass through points where respective lateral magnifications are −1 at the same time, the fifth lens group consists of a negative fifth A lens group that moves during anti-shake operation, and a positive fifth B lens group that is fixed during the anti-shake operation, and the lateral magnification of the fifth A lens group is negative.

公开(公告)号：US20160091698A1

公开(公告)日：2016-03-31

申请号：US14867943

申请日：2015-09-28

申请人： FUJIFILM Corporation

发明人： Shinkichi IKEDA ,  Daiki KOMATSU ,  Michio CHO

IPC分类号： G02B15/167 ,  G02B15/20 ,  G02B27/00

CPC分类号： G02B15/20 ,  G02B15/177

摘要： A zoom lens consists of, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, a fifth lens group having a positive refractive power, and a sixth lens group having a positive refractive power, wherein magnification change is effected by changing all distances between adjacent lens groups. The second lens group is moved from the object side toward the image side during magnification change from the wide-angle end to the telephoto end. The position of the third lens group at the telephoto end is nearer to the image side than the position of the third lens group at the wide-angle end.

摘要翻译： 变焦透镜按照从物体侧起依次具有正屈光力的第一透镜组，具有负屈光力的第二透镜组，具有正折光力的第三透镜组，具有正折光力的第四透镜组 屈光力，具有正屈光力的第五透镜组和具有正屈光力的第六透镜组，其中通过改变相邻透镜组之间的所有距离来实现放大率改变。 在从广角端到远摄端的放大变化期间，第二透镜组从物体侧朝向像侧移动。 第三透镜组在望远端的位置比广角端处的第三透镜组的位置更靠近像侧。

公开(公告)号：US20150092280A1

公开(公告)日：2015-04-02

申请号：US14564755

申请日：2014-12-09

申请人： FUJIFILM Corporation

发明人： Shinkichi IKEDA ,  Toshihiro AOI

IPC分类号： G02B15/173 ,  G02B13/18

CPC分类号： G02B15/173 ,  G02B13/18 ,  G02B15/20

摘要： The zoom lens substantially consists of a positive first lens group fixed while changing magnification, a negative second lens group which moves from the object side to the image side while changing magnification, a positive third lens group which moves while changing magnification, and a positive fourth lens group which moves from the image side to the object side while changing magnification, and a positive fifth lens group fixed while changing magnification in this order from the object side. A floating system in which the third lens group and the fourth lens group move relative to each other while changing magnification is adopted. The image formation magnification rates of the combined lens group formed by the third lens group and the fourth lens group together and the second lens group simultaneously pass −1× point while changing magnification from the wide angle end to the telephoto end.

摘要翻译： 变焦透镜基本上由改变倍率固定的正的第一透镜组，在改变倍率时从物体侧移动到像侧的负的第二透镜组，在改变倍率时移动的正的第三透镜组以及正的第四透镜组 透镜组，其在改变倍率的同时从图像侧移动到物体侧;以及正的第五透镜组，在从物体侧依次改变倍率时固定。 采用浮动系统，其中第三透镜组和第四透镜组在改变倍率的同时相对于彼此移动。 由第三透镜组和第四透镜组形成的组合透镜组和第二透镜组的图像形成倍率在从广角端到望远端的倍率变化的同时同时通过-1×点。

公开(公告)号：US20140177066A1

公开(公告)日：2014-06-26

申请号：US14175431

申请日：2014-02-07

申请人： FUJIFILM CORPORATION

发明人： Shinkichi IKEDA ,  Michio CHO

IPC分类号： G02B15/14

CPC分类号： G02B15/14 ,  G02B13/009 ,  G02B13/18 ,  G02B15/17

摘要： A variable magnification optical system substantially consists of a first lens-group having positive refractive-power, and which is fixed during magnification change, a second lens-group having negative refractive-power, a third lens-group having negative refractive-power, a fourth lens-group having negative refractive-power, an aperture stop, which is fixed during magnification change, and a fifth lens-group having positive refractive-power, and which is fixed during magnification change, in this order from an object-side along an optical-axis. The second, third and fourth lens-groups move in such a manner that a distance between the first lens-group and the second lens-group constantly becomes longer and a distance between the second lens-group and the third lens-group constantly becomes longer, compared with a wide-angle end, and 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 change when magnification is changed from the wide-angle end to a telephoto end.

摘要翻译： 可变放大倍率光学系统基本上由具有正折射率的第一透镜组和放大率变化期间固定的第一透镜组，具有负折光力的第二透镜组，具有负折光力的第三透镜组， 具有负折射率的第四透镜组，在放大变化期间固定的孔径光阑以及具有正折光力的第五透镜组，并且在放大变化期间以从物体侧沿着的顺序依次固定 光轴。 第二透镜组和第三透镜组以这样的方式移动，使得第一透镜组和第二透镜组之间的距离恒定地变长，并且第二透镜组和第三透镜组之间的距离恒定地变长 与广角端相比，第三透镜​​组与第四透镜组之间的距离以及第四透镜组与第五透镜组之间的距离在从广角端变化时发生变化 到远摄端。

公开(公告)号：US20140153108A1

公开(公告)日：2014-06-05

申请号：US14173223

申请日：2014-02-05

申请人： FUJIFILM Corporation

发明人： Shinkichi IKEDA ,  Michio CHO

IPC分类号： G02B15/14

CPC分类号： G02B15/14 ,  G02B13/009 ,  G02B13/18 ,  G02B15/17 ,  G02B15/173

摘要： A variable-magnification optical-system substantially consists of a first-lens-group having positive-refractive-power, a second-lens-group having negative-refractive-power, a third-lens-group having negative-refractive-power, a fourth-lens-group having negative-refractive-power, an aperture-stop, and a fifth-lens-group having positive-refractive-power in this order from an object-side along an optical-axis. The second-lens-group, third-lens-group and fourth-lens-group move when magnification is changed from a wide-angle-end to a telephoto-end. The first-lens-group substantially consists of a 1f-th lens-group having negative-refractive-power, a 1m-th lens-group having positive-refractive-power and a 1r-th lens-group substantially consisting of a 1r1-th lens having positive-refractive-power with its strong convex-surface facing the object-side, a biconvex 1r2-th lens and a convex meniscus 1r3-th lens with its convex-surface facing the object-side, and the 1r-th lens-group having positive-refractive-power as a whole in this order from the object-side. The 1f-th lens-group substantially consists of a concave meniscus-lens with its convex-surface facing the object-side and a negative-lens in this order from the object-side.

摘要翻译： 可变放大率光学系统基本上由具有正折光力的第一透镜组，具有负折光力的第二透镜组，具有负折光力的第三透镜组， 具有负折光力的第四透镜组，具有正光折射力的孔径光阑和第五透镜组，从物体侧沿着光轴依次具有正屈光力。 第二透镜组，第三透镜​​组和第四透镜组在从广角端变为长焦端时移动。 第一透镜组基本上由具有负折光力的1f透镜组，具有正折光力的第1m透镜组和第1透镜组基本上由1r1- 具有朝向物体侧的强凸面的正屈光力透镜，具有凸面朝向物侧的双凸面1r2透镜和凸弯月面1r3透镜，第1r 从物体侧起依次具有正折射力的透镜组。 第1f透镜组基本上由凹面弯曲透镜构成，其凸面朝向物体侧，负像透镜依次从物体侧开始。

公开(公告)号：US20180217360A1

公开(公告)日：2018-08-02

申请号：US15879463

申请日：2018-01-25

申请人： FUJIFILM Corporation

发明人： Shinkichi IKEDA ,  Takuya TANAKA

IPC分类号： G02B9/60 ,  G02B13/02 ,  G02B15/14

CPC分类号： G02B9/60 ,  G02B13/02 ,  G02B15/14 ,  G02B15/173

摘要： The zoom lens consists of, in order from an object side: a first lens group that remains stationary during zooming and has a positive refractive power; at least two movable lens groups that are moved during zooming; and a final lens group that remains stationary during zooming and has a positive refractive power. The first lens group consists of, in order from the object side, a first-a lens group that remains stationary during focusing and has a negative refractive power, a first-b lens group that is moved during focusing and has a positive refractive power, and a first-c lens group that remains stationary during focusing and has a positive refractive power. The first-a lens group consists of, in order from the object side, a first lens that has a negative refractive power, a second lens that is convex toward the object side and has a positive refractive power, and a third lens that has a negative refractive power. At least one of the first lens or the third lens satisfies a predetermined conditional expression, and the entire system satisfies the other predetermined conditional expressions.

公开(公告)号：US20150355440A1

公开(公告)日：2015-12-10

申请号：US14730442

申请日：2015-06-04

申请人： FUJIFILM Corporation

发明人： Shinkichi IKEDA ,  Yasutaka SHIMADA

IPC分类号： G02B15/16

CPC分类号： G02B15/173

摘要： A zoom lens consists of five lens groups including, in order from the object side, positive, negative, positive, positive, and positive lens groups. During magnification change, the first and fifth lens groups are fixed relative to the image plane, and the second, third, and fourth lens groups are moved to change distances therebetween. During magnification change from the wide-angle end to the telephoto end, the second lens group is moved from the object side toward the image plane side, and the fourth lens group is moved from the image plane side toward the object side. The fifth lens group includes at least two negative lenses, and satisfies the condition expression (1) below: 1.90

摘要翻译： 变焦透镜由五个透镜组组成，包括从物体侧起的正，负，正，正和正透镜组。 在放大变化期间，第一透镜组和第五透镜组相对于图像平面固定，并且移动第二透镜组和第三透镜组以改变它们之间的距离。 在从广角端到望远端的倍率变化期间，第二透镜组从物体侧朝向像面侧移动，并且第四透镜组从图像平面侧向物体侧移动。 第五透镜组包括至少两个负透镜，并且满足以下条件表达式（1）：1.90

公开(公告)号：US20150355436A1

公开(公告)日：2015-12-10

申请号：US14726763

申请日：2015-06-01

申请人： FUJIFILM Corporation

发明人： Yasutaka SHIMADA ,  Shinkichi IKEDA

IPC分类号： G02B13/00 ,  H04N5/225 ,  H04N5/232 ,  G02B15/14

CPC分类号： G02B15/173

摘要： A five-group zoom lens includes, in order from the object side, positive, negative, positive, positive, and positive groups. During magnification change, the first and fifth groups are fixed relative to the image plane, and the second, third, and fourth groups are moved to change distances therebetween. During magnification change from the wide-angle end to the telephoto end, the second group is moved from the object side toward the image plane side, the fourth group is moved from the image plane side toward the object side, and a third-fourth combined lens group, which is the combination of the third group combined and the fourth group, and the second group simultaneously pass through their respective points at which the imaging magnification is −1×. The third-fourth combined lens group includes at least one negative lens, and satisfies the condition expression (1) below: 29

摘要翻译： 五组变焦镜头按照从物体侧起的顺序包括正，负，正，正和正组。 在放大变化期间，第一组和第五组相对于图像平面固定，并且移动第二组，第三组和第四组以改变它们之间的距离。 在从广角端到望远端的倍率变化期间，第二组从物体侧朝向像面侧移动，第四组从图像平面侧向物体侧移动，第三组合 透镜组是第三组合和第四组的组合，第二组同时通过其成像倍数为-1×的各自的点。 第三第四组合透镜组包括至少一个负透镜，并且满足以下条件表达式（1）：29 <＆ngr; dG34n <37（1）。