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公开(公告)号：US20210063709A1
公开(公告)日：2021-03-04
申请号：US16998541
申请日：2020-08-20
Applicant: FUJIFILM Corporation
Inventor： Yukiko NAGATOSHI , Akiko NAGAHARA , Masaru AMANO
Abstract: The imaging optical system forms a first intermediate image at a position conjugate to a magnification side imaging surface and a second intermediate image at a position closer to a reduction side than the first intermediate image on an optical path and conjugate to the first intermediate image. The imaging optical system consists of a first optical system, a second optical system, and a third optical system in order from the magnification side to the reduction side along the optical path. The imaging optical system does not include a reflective member having a power.
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公开(公告)号：US20160131922A1
公开(公告)日：2016-05-12
申请号：US14934418
申请日：2015-11-06
Applicant: FUJIFILM Corporation
Inventor： Akiko NAGAHARA , Yukiko NAGATOSHI
CPC classification number: G02B27/646 , G02B17/008 , G02B23/02 , G02B23/18 , G02B26/0816
Abstract: In an optical system composed of, in order from the object side, an objective optical system and a reflective surface optical system disposed along the optical axis of the objective optical system, a first reflective surface is turned around a turning axis passing through the intersection between the first reflective surface and the optical axis and is perpendicular to the plane that includes the optical axes before and after being bent by the first reflective surface. Further, the first reflective surface and the second reflective surface are turned synchronously around turning axes, each passing through the intersection between each corresponding reflective surface with the optical axis, being deviated from the normal to each corresponding reflective surface, and being arranged in parallel to each other, whereby an image formed by the objective optical system is shifted to move the image location of the objective optical system.
Abstract translation: 在从物体侧起依次沿着物镜光学系统的光轴设置的物镜光学系统和反射面光学系统构成的光学系统中，第一反射面绕着穿过物镜光学系统的交点的转轴旋转 第一反射表面和光轴，并且在由第一反射表面弯曲之前和之后垂直于包括光轴的平面。 此外，第一反射表面和第二反射表面围绕转轴同步转动，每个转动轴通过每个对应的反射表面与光轴之间的交叉点，从每个对应的反射表面的法线偏离，并且平行布置 由此，由物镜光学系统形成的图像被移动以移动物镜光学系统的图像位置。
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公开(公告)号：US20210063710A1
公开(公告)日：2021-03-04
申请号：US16998272
申请日：2020-08-20
Applicant: FUJIFILM Corporation
Inventor： Yukiko NAGATOSHI , Akiko NAGAHARA , Masaru AMANO
Abstract: The imaging optical system forms a first intermediate image at a position conjugate to the magnification side imaging surface and a second intermediate image at a position closer to a reduction side than the first intermediate image on an optical path and conjugate to the first intermediate image. The imaging optical system consists of a first optical system, a second optical system, and a third optical system in order from a magnification side to the reduction side along the optical path. The imaging optical system is configured to be telecentric on the reduction side. The imaging optical system satisfies predetermined conditional expressions.
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公开(公告)号：US20180059385A1
公开(公告)日：2018-03-01
申请号：US15687594
申请日：2017-08-28
Applicant: FUJIFILM Corporation
Inventor： Masaru AMANO , Akiko NAGAHARA , Yukiko NAGATOSHI , Kazuki INOUE
CPC classification number: G02B15/14 , G02B15/173 , G03B21/142
Abstract: A zoom lens forms an intermediate image at a position conjugate to a reduction side imaging plane and forms the intermediate image again on a magnification side imaging plane. The zoom lens includes a plurality of lens groups including at least two movable lens groups, which move by changing spacings between the groups adjacent to each other in a direction of an optical axis during zooming, at a position closer to the reduction side than the intermediate image. Among the plurality of lens groups, a final lens group closest to the reduction side has a positive refractive power, and remains stationary with respect to the reduction side imaging plane during zooming. The zoom lens satisfies predetermined conditional expressions (1) and (2).
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公开(公告)号：US20160062093A1
公开(公告)日：2016-03-03
申请号：US14821009
申请日：2015-08-07
Applicant: FUJIFILM Corporation
Inventor： Akiko NAGAHARA
CPC classification number: G02B15/177 , G02B27/0025 , H04N9/317
Abstract: A projection zoom lens is essentially constituted by, in order from the magnification side: a negative first lens group, which is fixed when changing magnification; a positive second lens group, which moves when changing magnification; a plurality of other lens groups; and a final lens group, which is fixed when changing magnification. The distances among all adjacent lens groups change when changing magnification. The first through third lenses from the magnification side within the first lens group are a first single lens having an aspherical surface with a concave surface toward the magnification side and a negative refractive power in the paraxial region, a second single lens having an aspherical surface, and a third lens. A first lens group front group constituted by the first through third lenses has a negative refractive power. Predetermined conditional formulae are satisfied.
Abstract translation: 投影变焦透镜基本上由放大倍率依次构成：在改变倍率时固定的负第一透镜组; 正的第二透镜组，当变化放大时移动; 多个其他透镜组; 和最后的透镜组，其在改变放大倍数时被固定。 当改变放大倍数时，所有相邻透镜组之间的距离发生变化。 来自第一透镜组中的放大倍率的第一至第三透镜是具有朝向放大侧具有凹面并且在近轴区域具有负折射光焦度的非球面的第一单透镜，具有非球面的第二单透镜， 和第三透镜。 由第一至第三透镜构成的第一透镜组前组具有负屈光力。 满足预定条件公式。
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Patent Agency Ranking
公开(公告)号：US20140376101A1
公开(公告)日：2014-12-25
申请号：US14484552
申请日：2014-09-12
Applicant: FUJIFILM Corporation
Inventor： Akiko NAGAHARA
IPC: G02B15/177 , G03B21/00 , G02B13/16 , G02B13/18
CPC classification number: G02B15/177 , G02B13/16 , G02B13/18 , G02B13/22 , G03B21/005
Abstract: A zoom lens for projection substantially consists of a negative first lens group, a positive second lens group, a positive third lens group, a negative fourth lens group, a positive fifth lens group, and a positive sixth lens in this order from a magnification side. The first lens group and the sixth lens group are fixed and the second lens group through the fifth lens group move during magnification change. A reduction side is telecentric. First through fourth lenses from the magnification side in the fifth lens group are a negative meniscus-shaped single lens with its convex surface facing the magnification side, a positive single lens, a biconcave lens and a biconvex lens, respectively, and the biconcave lens and the biconvex lens are cemented together.
Abstract translation: 用于投影的变焦透镜基本上由放大倍数的负的第一透镜组，正的第二透镜组，正的第三透镜组，负的第四透镜组，正的第五透镜组和正的第六透镜组成 。 第一透镜组和第六透镜组是固定的，并且通过第五透镜组的第二透镜组在放大变化期间移动。 减速侧是远心的。 第五透镜组的放大倍率的第一到第四透镜分别是其凸面朝向放大倍率的负弯月形单透镜，正单透镜，双凹透镜和双凸透镜，并且双凹透镜和 双凸透镜胶合在一起。
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公开(公告)号：US20130271848A1
公开(公告)日：2013-10-17
申请号：US13913930
申请日：2013-06-10
Applicant: FUJIFILM Corporation
Inventor： Akiko NAGAHARA
IPC: G02B15/14
CPC classification number: G02B15/14 , G02B13/16 , G02B15/173 , G02B15/28
Abstract: Composing a projection zoom lens with a first lens group disposed on the most magnification side and having a positive power, the lens group being fixed at the time of zooming, a final lens group disposed on the most reduction side and having a negative power, the lens group being fixed at the time of zooming, and a plurality of lens groups disposed between the first and final lens groups and moved at the time of zooming along an optical axis in association with each other for the zooming and correction of image plane shift arising from the zooming, in which the final lens group includes a lens having a positive power on the most reduction side.
Abstract translation: 构成具有设置在最大放大倍率上并具有正功率的第一透镜组的投影变焦透镜，在变焦时固定透镜组，设置在最大减少侧并具有负光焦度的最终透镜组， 透镜组在变焦时被固定，以及多个透镜组，其设置在第一和最后透镜组之间并且在沿着光轴的变焦时相互关联地移动，用于发生图像平面偏移的变焦和校正 其中最终透镜组包括在最大减少侧上具有正功率的透镜的变焦。
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公开(公告)号：US20220264064A1
公开(公告)日：2022-08-18
申请号：US17591788
申请日：2022-02-03
Applicant: FUJIFILM Corporation
Inventor： Yukiko NAGATOSHI , Akiko NAGAHARA , Chikara YAMAMOTO
Abstract: A projection-type display device includes: a display element including a rectangular displayable region in which an image is displayable; and a projection optical system. Assuming that a focal length of the projection optical system is f and a length of a long side of the displayable region is w, 0.15
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公开(公告)号：US20210165187A1
公开(公告)日：2021-06-03
申请号：US17097028
申请日：2020-11-13
Applicant: FUJIFILM Corporation
Inventor： Akiko NAGAHARA
Abstract: An imaging lens consists of a front group and a rear group in order from the object side to the image side. The front group includes, as lenses, in order from the object side to the image side, only a positive meniscus lens having a surface convex toward the object side, a first cemented lens having a negative power as a whole, and a second cemented lens having a positive power as a whole. In the first cemented lens, a positive lens and a negative lens are cemented in order from the object side, with a surface convex toward the object side and a surface concave toward the image side. The rear group includes a negative most image side lens having a surface concave toward the object side at a position closest to the image side.
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公开(公告)号：US20180059393A1
公开(公告)日：2018-03-01
申请号：US15687759
申请日：2017-08-28
Applicant: FUJIFILM Corporation
Inventor： Yukiko NAGATOSHI , Kazuki INOUE , Akiko NAGAHARA
IPC: G02B15/167 , G02B13/16
CPC classification number: G02B15/167 , G02B13/16 , G02B15/163
Abstract: The zoom lens forms an intermediate image at a position conjugate to a reduction side imaging plane and forms the intermediate image again on a magnification side imaging plane. The zoom lens includes: a first optical system on the magnification side; and a second optical system on the reduction side. The intermediate image is formed between the magnification side and the reduction side. The second optical system includes two or more movable lens groups, which move by changing spacings between the groups adjacent to each other in a direction of an optical axis during zooming, and two stationary lens groups which remain stationary with respect to the reduction side imaging plane during zooming. One stationary lens group of the two stationary lens groups is disposed to be closest to the reduction side, and has a positive refractive power. In addition, a lens group closest to the magnification side in the second optical system has a positive refractive power.
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