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公开(公告)号：US20210208486A1
公开(公告)日：2021-07-08
申请号：US17206133
申请日：2021-03-19
Applicant: FUJIFILM Corporation
Inventor： Takeya ABE , Keito KAMIO , Ryosuke NAGAMI , Shinichiro FUJIKI , Kazuaki OKAMORI , Yuya SAKAI
Abstract: A lens unit includes a guided portion that includes a first bearing portion and a second bearing portion disposed to be spaced apart from each other in a direction X and is slidably supported by a guide shaft, and a lens holding member. A first distance between the center of a fixing portion of the lens holding member and the center of the first bearing portion in the direction X is set to be longer than a second distance between the center of the fixing portion and the center of the second bearing portion in the direction X. A first tilt-preventing member having a linear expansion coefficient lower than that of the lens holding member is fixed to a region, which is closer to the first bearing portion than the center of the fixing portion, of a portion of the guided portion positioned between the first and second bearing portions.
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公开(公告)号：US20200166730A1
公开(公告)日：2020-05-28
申请号：US16689275
申请日：2019-11-20
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI , Tetsuya ORI
Abstract: The imaging lens includes, as lens groups, only a positive first lens group, a positive second lens group, and a negative third lens group in order from the object side. An aperture stop is disposed between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the third lens group. During focusing, the first lens group and the third lens group do not move, and the second lens group moves. The first lens group consists of a negative lens and a positive lens in order from the object side. The third lens group has a negative lens and a positive lens in order from the object side.
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公开(公告)号：US20170075089A1
公开(公告)日：2017-03-16
申请号：US15239383
申请日：2016-08-17
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI , Takashi SUZUKI
CPC classification number: G02B13/006 , G02B5/005 , G02B9/60 , G02B13/0045
Abstract: An imaging lens includes, in order from the object side to the image side, a positive first lens group, a stop, a positive second lens group, and a positive third lens group. The first lens group includes, consecutively in order from the most object side thereof, a negative lens and a positive lens. The second lens group is of a three lens configuration and includes a positive lens and a negative lens. The third lens group includes, consecutively in order from the most object side thereof, a negative lens and a positive lens. The imaging lens satisfies Conditional Formula (1): 0
Abstract translation: 成像透镜从物体侧到像侧依次包括正的第一透镜组，光阑，正的第二透镜组和正的第三透镜组。 第一透镜组从其最物体侧依次包括负透镜和正透镜。 第二透镜组具有三透镜配置，并且包括正透镜和负透镜。 第三透镜组从最物体侧依次包括负透镜和正透镜。 成像透镜满足与第一透镜组的焦距f1和第二透镜组的焦距f2有关的条件式（1）：0
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公开(公告)号：US20240337822A1
公开(公告)日：2024-10-10
申请号：US18750114
申请日：2024-06-21
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI
CPC classification number: G02B15/20 , G02B15/1461 , G02B27/0025
Abstract: The zoom lens includes, in order from a position closest to an object side to an image side: a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; an intermediate group that has a positive refractive power; and a subsequent group that has a negative refractive power. The first lens group moves during zooming. The second lens group consists of, in order from the object side to the image side, a front group of the second lens group which does not move during image blur correction and an image stabilization group which moves during image blur correction and has a negative refractive power. The zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US20240288676A1
公开(公告)日：2024-08-29
申请号：US18653520
申请日：2024-05-02
Applicant: FUJIFILM Corporation
Inventor： Taiga NODA , Ryosuke NAGAMI
CPC classification number: G02B15/1461 , G02B15/20 , G02B27/0025
Abstract: A zoom lens consists of, in order from an object side to an image 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 positive refractive power; a fifth lens group having a negative refractive power; and a sixth lens group having a positive refractive power. During zooming from the wide angle end to the telephoto end, the distance between the adjacent lens groups in the optical axis direction changes, and the third lens group and the fifth lens group move integrally along the optical axis.
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Patent Agency Ranking
公开(公告)号：US20240264416A1
公开(公告)日：2024-08-08
申请号：US18608311
申请日：2024-03-18
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI
IPC: G02B15/14 , G02B13/18 , G02B15/177
CPC classification number: G02B15/143507 , G02B13/18 , G02B15/177
Abstract: The zoom lens consists of, in order from an object side to an image side, a first lens group having a negative refractive power, a middle group, and a final group. During zooming, a spacing between the first lens group and the middle group changes, and a spacing between the middle group and the final group changes. During focusing, at least a part of the middle group moves, and the first lens group and the final group remain stationary with respect to an image plane. The zoom lens satisfies predetermined conditional expressions about aback focal length, a focal length, and a maximum half angle of view.
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公开(公告)号：US20220357560A1
公开(公告)日：2022-11-10
申请号：US17815097
申请日：2022-07-26
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI , Tetsuya ORI
Abstract: The imaging lens includes, as lens groups, only a positive first lens group, a positive second lens group, and a negative third lens group in order from the object side. An aperture stop is disposed between a lens surface closest to the image side in the first lens group and a lens surface closest to the object side in the third lens group. During focusing, the first lens group and the third lens group do not move, and the second lens group moves. The first lens group consists of a negative lens and a positive lens in order from the object side. The third lens group has a negative lens and a positive lens in order from the object side.
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公开(公告)号：US20220342179A1
公开(公告)日：2022-10-27
申请号：US17723184
申请日：2022-04-18
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI
Abstract: The imaging lens consists of, in order from the object side to the image side, a first lens group having a positive refractive power, a second lens group, and a third lens group. During focusing, the second lens group moves. The first lens group includes a first positive lens disposed to be closest to the object side, a second positive lens disposed closer to the image side than the first positive lens, and an LA lens disposed closer to the image side than the second positive lens. Assuming that a partial dispersion ratio and an Abbe number thereof are respectively θgFA and vA, the LA lens satisfies 0.02
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公开(公告)号：US20220236544A1
公开(公告)日：2022-07-28
申请号：US17580109
申请日：2022-01-20
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI
IPC: G02B15/14 , G02B15/177 , G02B13/18
Abstract: The zoom lens consists of, in order from an object side to an image side, a first lens group having a negative refractive power, a middle group, and a final group. During zooming, a spacing between the first lens group and the middle group changes, and a spacing between the middle group and the final group changes. During focusing, at least a part of the middle group moves, and the first lens group and the final group remain stationary with respect to an image plane. The zoom lens satisfies predetermined conditional expressions about a back focal length, a focal length, and a maximum half angle of view.
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公开(公告)号：US20200326506A1
公开(公告)日：2020-10-15
申请号：US16915763
申请日：2020-06-29
Applicant: FUJIFILM Corporation
Inventor： Ryosuke NAGAMI
Abstract: The zoom lens consists of, in order from the object side, a first lens group that has a negative refractive power; a second lens group that has a positive refractive power; a third lens group that has a negative refractive power; and a fourth lens group that has a positive refractive power. During zooming, in each lens group, distances between the adjacent groups in the direction of the optical axis are changed. The first lens group consists of, in order from the object side, a first lens having a negative refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power. The third lens group consists of a negative lens. During focusing, only the third lens group moves along the optical axis. The zoom lens satisfies predetermined conditional expressions.
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