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公开(公告)号：US20250110320A1
公开(公告)日：2025-04-03
申请号：US18886352
申请日：2024-09-16
Applicant: FUJIFILM Corporation
Inventor： Masaru YONEZAWA , Hiroki SAITO , Yuya HIRAKAWA , Daiki KOMATSU , Kota SHIMAZAKI
IPC: G02B15/14 , G02B13/00 , G02B15/167
Abstract: A zoom lens includes: a first lens group that is disposed to be closest to an object side and that has a positive refractive power; a negative group that is disposed to be adjacent to an image side of the first lens group, that consists of two or fewer lens groups, and that has a negative refractive power as a whole; an N lens group that is disposed to be closer to the image side than the negative group and that has a negative refractive power; a P lens group that is disposed to be closer to the image side than the negative group and that has a positive refractive power; and a final lens group that is disposed to be closest to the image side. During zooming, all the spacings of adjacent lens groups change. The zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US20240004167A1
公开(公告)日：2024-01-04
申请号：US18470035
申请日：2023-09-19
Applicant: FUJIFILM Corporation
Inventor： Shunsuke MIYAGISHIMA , Hiroki SAITO , Kosuke TAKAHASHI , Tomoki OTSUKI
IPC: G02B13/00 , H04N23/951
CPC classification number: G02B13/0045 , H04N23/951 , G02B27/646
Abstract: The imaging lens includes, successively in order from a position closest to an object side: a first lens group that remains stationary with respect to an image plane during focusing; and a focus lens group that moves along an optical axis during focusing. Assuming that a maximum image height is Ymax, and a focal length of the imaging lens is f, and a sum of a back focal length in terms of an air-equivalent distance and a distance on the optical axis from a lens surface closest to the object side to a lens surface closest to the image side is TL, the imaging lens satisfies Conditional Expressions (1) and (2).
0.1-
公开(公告)号：US20230115405A1
公开(公告)日：2023-04-13
申请号：US17932228
申请日：2022-09-14
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Shunsuke MIYAGISHIMA
Abstract: An observation optical system includes a display element and an eyepiece lens arranged on an eyepoint side of the display element. The eyepiece lens includes at least one negative lens. In a case where a half value of a longest diameter of a display region in the display element is denoted by H, and a focal length of the eyepiece lens is denoted by f, the observation optical system satisfies a conditional expression represented by 0.35
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公开(公告)号：US20200257129A1
公开(公告)日：2020-08-13
申请号：US16784138
申请日：2020-02-06
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO
Abstract: 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
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公开(公告)号：US20190265504A1
公开(公告)日：2019-08-29
申请号：US16286301
申请日：2019-02-26
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO
Abstract: 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
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Patent Agency Ranking
公开(公告)号：US20160282590A1
公开(公告)日：2016-09-29
申请号：US15061437
申请日：2016-03-04
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Takashi SUZUKI
CPC classification number: G02B13/04
Abstract: 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.
Abstract translation: 成像透镜从最物体侧依次依次包括正的第一透镜组，正的第二透镜组和第三透镜组。 通过以第二透镜组和第三透镜组之间的距离变化的方式移动第二透镜组和第三透镜组来进行聚焦在无限远处聚焦在物体上的状态的近距离处的物体， 第一个镜头组是固定的。 第一透镜组从最物体侧依次包括负第一透镜和负第二透镜。
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公开(公告)号：US20140177074A1
公开(公告)日：2014-06-26
申请号：US14189429
申请日：2014-02-25
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Michio CHO , Toru ITO
IPC: G02B15/14
CPC classification number: G02B15/14 , G02B15/177
Abstract: 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.
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公开(公告)号：US20140153111A1
公开(公告)日：2014-06-05
申请号：US14176225
申请日：2014-02-10
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Michio CHO , Toru ITO
IPC: G02B15/177
CPC classification number: G02B15/177 , G02B13/18 , G02B15/16
Abstract: A zoom lens substantially consists of a first lens group having a negative refractive power and a second lens group having a positive refractive power arranged in order from the object side; that changes magnification by moving the first lens group and the second lens group; and wherein the first lens group is configured by 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, arranged in order from the object side. The zoom lens satisfies a predetermined conditional expression.
Abstract translation: 变焦透镜基本上由具有负屈光力的第一透镜组和具有从物体侧排列的正折光力的第二透镜组构成; 通过移动第一透镜组和第二透镜组来改变放大率; 并且其中所述第一透镜组由具有负折光力的第一透镜，第二透镜，具有负折光力的第三透镜和具有正屈光力的第四透镜构成，所述第四透镜从物体侧开始依次布置。 变焦透镜满足预定条件表达式。
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公开(公告)号：US20140153110A1
公开(公告)日：2014-06-05
申请号：US14175333
申请日：2014-02-07
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Michio CHO , Toru ITO
IPC: G02B15/177
CPC classification number: G02B15/161 , G02B15/177 , G02B27/646 , G03B2205/0046
Abstract: 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.
Abstract translation: 变焦透镜包括：具有负屈光力的第一透镜组; 以及具有正屈光力的第二透镜组，从物体侧依次设置。 通过移动第一透镜组和第二透镜组来改变放大率。 第一透镜组包括具有负折光力的第一透镜，第二透镜，具有负折光力的第三透镜和具有正屈光力的第四透镜，从物体侧开始依次设置。 变焦透镜满足预定条件式。
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公开(公告)号：US20230350172A1
公开(公告)日：2023-11-02
申请号：US18183126
申请日：2023-03-13
Applicant: FUJIFILM Corporation
Inventor： Ryoko TOMIOKA , Hiroki SAITO
IPC: G03B7/0993 , G02B15/14 , G02B13/02
CPC classification number: G02B15/145121 , G02B13/02 , G03B7/0993
Abstract: A lens unit includes a variable magnification optical system provided with a stop that adjusts a light amount and a processor that controls an opening amount of the stop based on information on a magnification change of the variable magnification optical system. In a case where a maximum value and a minimum value of an F-Number in the entire variable magnification region of the variable magnification optical system are respectively Fmax and Fmin and an average value of an F-Number at a wide angle end and an F-Number at a telephoto end of the variable magnification optical system is Fave, the processor is configured to control the opening amount within a range satisfying 3
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