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公开(公告)号：US20150192770A1
公开(公告)日：2015-07-09
申请号：US14642855
申请日：2015-03-10
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO
CPC classification number: G02B25/001 , G02B3/04
Abstract: An eyepiece lens consists of, in order from the observed object M side, a first spherical lens having a positive refractive power, a second spherical lens having a negative refractive power, and a third lens having a positive refractive power with at least the observed object-side surface thereof having an aspheric shape. The eyepiece lens satisfies the condition expression below: 0.0095
Abstract translation: 目镜透镜按从观察对象M一侧起依次具有正屈光力的第一球面透镜，具有负折光力的第二球面透镜和至少具有观察对象的具有正屈光力的第三透镜 其表面具有非球面形状。 目镜透镜满足以下条件：0.0095
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公开(公告)号：US20140177075A1
公开(公告)日：2014-06-26
申请号：US14189480
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 , G02B27/646
Abstract: In a zoom lens in which a first lens group having a negative refractive power and a second lens group having a positive refractive power are disposed in order from the object side and zooming is performed by moving the first lens group and the second lens group, the first lens group is formed of a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, disposed in order from the object side. Then, when the focal length of the entire system at the wide angle end is taken as fw and the focal length of the second lens group are taken as f2, the zoom lens is configured to satisfy a conditional expression give below: 0.00
Abstract translation: 在具有负屈光力的第一透镜组和具有正折光力的第二透镜组的变焦透镜中，从物体侧依次布置并且通过移动第一透镜组和第二透镜组来执行变焦， 第一透镜组由具有负屈光力的第一透镜，具有正屈光力的第二透镜，具有负折射光焦度的第三透镜和具有正折射光焦度的第四透镜形成，从物侧 。 然后，将广角端的整个系统的焦距作为fw，将第二透镜组的焦距设为f2时，变焦镜头被配置为满足以下条件表达式：0.00
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公开(公告)号：US20140177073A1
公开(公告)日：2014-06-26
申请号：US14193223
申请日：2014-02-28
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Michio CHO , Toru ITO
CPC classification number: G02B15/14 , G02B13/009 , 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 the following conditional formulae, when f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, and fG12 is the focal length of the second lens within the first lens group: 0.00
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。 变焦透镜满足以下条件式，当f1是第一透镜组的焦距时，f2是第二透镜组的焦距，fG12是第一透镜组内的第二透镜的焦距：0.00 < | f1 / f2 | <1.04（1-5）; 和-1.00
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公开(公告)号：US20140153105A1
公开(公告)日：2014-06-05
申请号：US14173362
申请日：2014-02-05
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Michio CHO , Toru ITO
IPC: G02B13/04
CPC classification number: G02B13/04 , G02B15/177 , G02B27/646
Abstract: In a zoom lens in which a first lens group having a negative refractive power and a second lens group having a positive refractive power are disposed in order from the object side and zooming is performed by moving the first lens group and the second lens group, the first lens group is formed of four lenses and the object side surface of the second lens in the first lens group is made concave on the object side in the paraxial region. When the paraxial radii of curvature of the object side surface and the image side surface of the second lens are taken as rG12F and rG12R respectively, the zoom lens satisfies a conditional expression given below: 2.0
Abstract translation: 在具有负屈光力的第一透镜组和具有正折光力的第二透镜组的变焦透镜中，从物体侧依次布置并且通过移动第一透镜组和第二透镜组来执行变焦， 第一透镜组由四个透镜形成，并且第一透镜组中的第二透镜的物体侧表面在近轴区域中的物体侧成为凹入。 当物镜侧表面的近轴曲率半径和第二透镜的像侧表面分别被视为rG12F和rG12R时，变焦透镜满足以下条件表达式：2.0 <（rG12F + rG12R）/（rG12F-rG12R ）<30.0（1-1）。
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公开(公告)号：US20240045310A1
公开(公告)日：2024-02-08
申请号：US18465331
申请日：2023-09-12
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Shunsuke MIYAGISHIMA , Kosuke TAKAHASHI , Tomoki OTSUKI
CPC classification number: G03B13/16 , G02B15/15 , G02B17/0896 , G02B17/0888 , H04N23/69 , G02B15/144113
Abstract: A finder includes, in order from an object side to an eye point side, an objective optical system that forms an intermediate image, and an ocular optical system that is provided for observation of the intermediate image. The intermediate image is positioned on the optical path between the objective optical system and the ocular optical system. The finder includes a plurality of reflecting surfaces for forming an erect image, and each of the objective optical system and the ocular optical system has at least one of the plurality of reflecting surfaces. The finder satisfies a conditional expression: 2
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Patent Agency Ranking
公开(公告)号：US20230324767A1
公开(公告)日：2023-10-12
申请号：US18178318
申请日：2023-03-03
Applicant: FUJIFILM Corporation
Inventor： Makoto KOBORI , Shunsuke MIYAGISHIMA , Hiroki SAITO
CPC classification number: G03B13/06 , G02B15/142
Abstract: Provided is a finder device capable of preventing dust on a display surface of a display element and reducing an influence of heat which is generated from the display element on an optical system.
An EVF 1 includes: an optical system 20 that includes a display element 10, a first lens group G1 disposed in order from the display element 10 side, and a second lens group G2; a first holding frame 30 that holds the display element 10 and the first lens group G1 to seal a space between the display element 10 and the first lens group G1; a second holding frame that holds the second lens group G2; and a diopter adjustment unit 50 that adjusts a diopter by integrally moving the display element 10 and the first lens group G1 relative to the second lens group G2.-
公开(公告)号：US20230228980A1
公开(公告)日：2023-07-20
申请号：US18155673
申请日：2023-01-17
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Ryoko TOMIOKA
IPC: G02B13/00
CPC classification number: G02B13/0045 , G02B13/006
Abstract: An imaging lens consists of a front group, an aperture stop, and a rear group, in order from an object side. The rear group includes at least one Lp lens that is made of a resin, has a positive refractive power, and is cemented to a lens. Assuming that an Abbe number and a refractive index of the Lp lens are respectively νp and Np, the Lp lens satisfies Conditional Expression represented by 120
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公开(公告)号：US20190265503A1
公开(公告)日：2019-08-29
申请号：US16286131
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. −1.5
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公开(公告)号：US20180210178A1
公开(公告)日：2018-07-26
申请号：US15873364
申请日：2018-01-17
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO , Shunsuke MIYAGISHIMA
CPC classification number: G02B13/06 , G02B3/0037 , G02B3/04 , G02B9/64 , G02B13/0045 , G02B15/14 , G02B2207/117
Abstract: 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.
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公开(公告)号：US20170371132A1
公开(公告)日：2017-12-28
申请号：US15630678
申请日：2017-06-22
Applicant: FUJIFILM Corporation
Inventor： Hiroki SAITO
CPC classification number: G02B9/60 , G02B13/0045 , G02B13/009 , G02B13/04 , G02B13/18 , G02B15/173 , G02B15/20
Abstract: The zoom lens consists of, in order from an object side, a first lens group having a positive power, a second lens group having a negative power, a third lens group having a positive power, a fourth lens group having a negative power, and a fifth lens group having a positive power. An aperture diaphragm is disposed between a surface of the second lens group closest to an image side and a surface of the fourth lens group closest to the object side. The first lens group and the fifth lens group each consist of two or less lenses. A negative meniscus lens, which is convex toward the object side, is disposed to be closest to the object side of the second lens group. A negative meniscus lens, which is convex toward the image side, is disposed to be closest to the image side of the fourth lens group.
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