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1. 发明授权

US11500220B2 Imaging lens and imaging apparatus 有权
公开(公告)号：US11500220B2
公开(公告)日：2022-11-15
申请号：US16784138
申请日：2020-02-06
申请人： FUJIFILM Corporation
发明人： Hiroki Saito
IPC分类号： G02B27/42 , G02B9/10
摘要： The imaging lens consists of, in order from the object side, a front group, an aperture stop, and a rear group. The front group includes a diffractive optical element having a positive lens and a negative lens in order from the object side. A diffractive surface is provided between an object side surface of the positive lens and an image side surface of the negative lens. Assuming that a distance on an optical axis from the diffractive surface to the aperture stop in a state in which an object at infinity is in focus is Ddoe, and a focal length of the whole system in a state in which the object at infinity is in focus is f, the imaging lens satisfies Conditional Expression (1): 0.02

2. 发明授权

US11036060B2 Imaging lens and imaging apparatus 有权
公开(公告)号：US11036060B2
公开(公告)日：2021-06-15
申请号：US16286301
申请日：2019-02-26
申请人： FUJIFILM Corporation
发明人： Hiroki Saito
IPC分类号： G02B27/64 , G02B9/64 , G02B13/02 , G02B9/34 , G02B15/14 , G02B9/12 , G02B9/60 , G02B9/62
摘要： The imaging lens consists of, in order from an object side: a first lens group that has a positive refractive power; an aperture stop; a second lens group that has a positive refractive power; and a third lens group. The second lens group consists of two or less lenses, and moves to the object side during focusing from an object at infinity to an object at a closest distance. The third lens group includes, successively in order from at a position closest to an image side, a rear lens group that has a positive refractive power and a vibration reduction lens group that has a negative refractive power. Then, Conditional Expression (1) is satisfied. 0.04

3. 发明授权

US10268028B2 Zoom lens and imaging apparatus 有权
公开(公告)号：US10268028B2
公开(公告)日：2019-04-23
申请号：US14645443
申请日：2015-03-12
申请人： FUJIFILM Corporation
发明人： Hiroki Saito
IPC分类号： G02B15/163 , G02B27/64 , G02B15/173
摘要： A zoom lens consists of 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 negative refractive-power, and a fifth lens-group having positive refractive-power in this order from an object-side. The third lens-group includes a cemented lens closest to an image-side consisting of a negative lens and a positive lens in this order from the object-side, and a cemented surface of which is convex toward the object-side. Further, distances between the lens-groups change, and the fifth lens-group is fixed, and at least the first lens-group and the fourth lens-group move in such a manner that the first lens-group and the fourth lens-group are located closer to the object-side at a telephoto-end than their positions at a wide-angle-end, respectively, when magnification is changed from the wide-angle-end to the telephoto-end. Further, the following conditional expression is satisfied: 3.50

4. 发明授权

US10151964B2 Ocular lens and imaging apparatus 有权
公开(公告)号：US10151964B2
公开(公告)日：2018-12-11
申请号：US15654090
申请日：2017-07-19
申请人： FUJIFILM Corporation
发明人： Shunsuke Miyagishima , Hiroki Saito
IPC分类号： G02B9/12 , G03B13/06 , G03B13/16 , G03B17/20 , H04N5/232
摘要： An ocular lens consists of a positive first lens group, a positive or negative second lens group, and a positive third lens group, in order from an observation object side. The first lens group consists of a positive meniscus lens with a convex surface toward an eye-point side. The second lens group includes a negative lens and a positive lens, and the number of lenses constituting the second lens group is three or less. The third lens group consists of a positive meniscus lens with a convex surface toward the eye-point side. The following conditional expression relating to a focal length of the whole system and a distance on an optical axis from a lens surface closest to the observation object side to a lens surface closest to the eye-point side is satisfied: 0.8

5. 发明授权

US09798121B2 Finder and imaging apparatus 有权
公开(公告)号：US09798121B2
公开(公告)日：2017-10-24
申请号：US15224826
申请日：2016-08-01
申请人： FUJIFILM Corporation
发明人： Hiroki Saito
IPC分类号： G02B23/14 , G02B15/15 , G02B13/04 , G02B25/00 , G02B27/10
CPC分类号： G02B15/15 , G02B13/04 , G02B25/001 , G02B27/106
摘要： A finder is a reverse Galileo type finder comprising, in order from the object side to the eye point side: an objective lens group having a negative refractive power; and an eyepiece lens group having a positive refractive power. The distance between the objective lens group and the eyepiece lens group is the longest distance from among distances between lenses, as an air converted length, in an observation optical system from the objective lens group to the eyepiece lens group. The eyepiece lens group consists of, in order from the object side to the eye point side: a first lens having a negative refractive power; a second lens having a positive refractive power; and a third lens having a negative refractive power. The first lens and the third lens are fixed while the second lens moves in the direction of the optical axis during diopter adjustment.

6. 发明授权

US09417504B2 Variable magnification finder and imaging apparatus 有权
标题翻译：可变放大倍数取景器和成像装置
公开(公告)号：US09417504B2
公开(公告)日：2016-08-16
申请号：US14291607
申请日：2014-05-30
申请人： FUJIFILM Corporation
发明人： Hiroki Saito
IPC分类号： G03B13/06 , G03B13/10 , H04N5/232 , G02B23/00 , G02B13/00 , G02B15/16
CPC分类号： G03B13/06 , G02B13/003 , G02B15/161 , G02B23/145 , G03B13/10 , H04N5/23296
摘要： The magnification of the variable magnification finder is switchable, and the finder includes a positive lens group, a negative lens group, and an eyepiece lens group in this order from an object side in a high magnification state. The positive lens group is retracted from an optical path of the variable magnification finder to the outside of the optical path and the negative lens group moves toward the object side when magnification is changed from the high magnification state to a low magnification state. The following conditional formula is satisfied when the focal length of the negative lens group is fN: −15 mm
摘要翻译：可变倍率取景器的倍率可切换，并且取景器从高放大状态的物体侧依次包括正透镜组，负透镜组和目镜透镜组。正透镜组从可变放大倍数取景器的光路缩回至光路外侧，而负透镜组在放大率从高放大状态变为低放大状态时向物体侧移动。当负透镜组的焦距为fN：-15mm

7. 发明授权

US10481371B2 Imaging lens and imaging apparatus 有权
公开(公告)号：US10481371B2
公开(公告)日：2019-11-19
申请号：US15873364
申请日：2018-01-17
申请人： FUJIFILM Corporation
发明人： Hiroki Saito , Shunsuke Miyagishima
IPC分类号： G02B9/12 , G02B13/06 , G02B3/00 , G02B9/64 , G02B15/14 , G02B3/04
摘要： The imaging lens consists of a first lens group fixed to an image plane during focusing, an aperture stop, a second lens group having a positive refractive power which moves along an optical axis during focusing, and a third lens group fixed to the image plane during focusing, in order from an object side. The first lens group includes at least two negative lenses among three lenses from a lens closest to the object side to a third lens, a negative lens of the at least two negative lenses closest to the object side being a negative meniscus lens with its convex surface toward the object side, the second lens group includes at least three lenses, and the third lens group includes at least three lenses.

8. 发明授权

US09013789B2 Zoom lens and imaging apparatus 有权
公开(公告)号：US09013789B2
公开(公告)日：2015-04-21
申请号：US14176687
申请日：2014-02-10
申请人： FUJIFILM Corporation
发明人： Hiroki Saito , Michio Cho , Toru Ito
IPC分类号： G02B15/14 , G02B15/177 , G02B13/00
CPC分类号： G02B15/14 , G02B13/009 , G02B15/177
摘要： A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group. The first lens group includes a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, provided in this order from the object side. The zoom lens satisfies predetermined conditional formulae.

9. 发明授权

US11036059B2 Imaging lens and imaging apparatus 有权
公开(公告)号：US11036059B2
公开(公告)日：2021-06-15
申请号：US16286131
申请日：2019-02-26
申请人： FUJIFILM Corporation
发明人： Hiroki Saito
IPC分类号： G02B27/64 , G02B9/64 , G02B13/02 , G02B15/14 , G02B9/12 , G02B9/62 , G02B9/34 , G02B9/60
摘要： The imaging lens consists of, in order from an object side: a first lens group that has a positive refractive power; an aperture stop; a second lens group that has a positive refractive power; and a third lens group. The second lens group consists of two or less lenses, and moves to the object side during focusing from an object at infinity to an object at a closest distance. The third lens group includes, successively in order from at a position closest to an image side, a rear lens group that has a positive refractive power and a vibration reduction lens group that has a negative refractive power. Then, Conditional Expression (1) is satisfied. −1.5

10. 发明授权

US10018811B2 Imaging lens and imaging apparatus 有权
公开(公告)号：US10018811B2
公开(公告)日：2018-07-10
申请号：US15061437
申请日：2016-03-04
申请人： FUJIFILM Corporation
发明人： Hiroki Saito , Takashi Suzuki
IPC分类号： G02B15/14 , G02B7/02 , G02B13/04
CPC分类号： G02B13/04
摘要： An imaging lens includes, consecutively in order from the most object-side, a positive first lens group, a positive second lens group and a third lens group. Focusing on an object at close distance from a state of having focused on an object at infinity is performed by moving the second lens group and the third lens group in such a manner that a distance between the second lens group and the third lens group changes while the first lens group is fixed. The first lens group includes, consecutively in order from the most object-side, a negative first lens and a negative second lens.

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