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    FINDER OPTICAL SYSTEM, FINDER DEVICE, AND IMAGING APPARATUS
    1.
    发明申请
    FINDER OPTICAL SYSTEM, FINDER DEVICE, AND IMAGING APPARATUS 有权

    公开(公告)号：US20250102886A1

    公开(公告)日：2025-03-27

    申请号：US18972741

    申请日：2024-12-06

    Applicant: FUJIFILM Corporation

    Inventor： Taku FURUBAYASHI ,  Yu KITAHARA

    IPC: G03B13/06 ,  G02B5/18 ,  G02B9/34 ,  G02B9/60

    Abstract: A finder optical system includes a display element, and an ocular optical system disposed on an eyepoint side with respect to the display element. One or more diffraction elements are disposed in the finder optical system. At least one of the diffraction elements is a first diffraction element including a liquid crystal diffraction element. In a case where a distance on an optical axis from a display surface of the display element to a surface of the finder optical system closest to the eyepoint side is denoted by TL, and a distance on the optical axis from the display surface of the display element to an optical surface of the first diffraction element is denoted by X1, the finder optical system satisfies a conditional expression represented by 0.05≤X1/TL≤1.

    IMAGING LENS AND IMAGING APPARATUS
    3.
    发明申请
    IMAGING LENS AND IMAGING APPARATUS 有权

    公开(公告)号：US20170199355A1

    公开(公告)日：2017-07-13

    申请号：US15361808

    申请日：2016-11-28

    Applicant: FUJIFILM Corporation

    Inventor： Yu KITAHARA ,  Takeshi KAMIYA

    IPC: G02B13/00 ,  G02B27/00 ,  G02B9/64

    CPC classification number: G02B13/0045 ,  B60R1/00 ,  B60R2300/10 ,  B60R2300/8033 ,  G02B9/64 ,  G02B13/00 ,  G02B13/06 ,  G02B27/0025

    Abstract: Provided are an imaging lens, which is a wide-angle imaging lens and is capable of satisfactorily correcting various aberrations, and an imaging apparatus which includes this imaging lens. The imaging lens consists of, in order from an object side: a first lens L1 that has a negative refractive power; a second lens L2 that has a negative refractive power; a third lens L3 that has a positive refractive power; a fourth lens L4 that has a negative refractive power; a fifth lens L5 that has a positive refractive power; a sixth lens L6 that has a positive refractive power; and a seventh lens L7 that has a negative refractive power. The following conditional expression (1) is satisfied. −2

    IMAGING LENS AND IMAGING APPARATUS
    4.
    发明申请
    IMAGING LENS AND IMAGING APPARATUS 有权
    成像镜头和成像设备

    公开(公告)号：US20150168692A1

    公开(公告)日：2015-06-18

    申请号：US14569806

    申请日：2014-12-15

    Applicant: FUJIFILM Corporation

    Inventor： Yu KITAHARA

    IPC: G02B13/04 ,  G02B13/00 ,  G02B1/00 ,  G02B9/62

    CPC classification number: G02B13/04 ,  G02B13/0045

    Abstract: An imaging lens substantially consists of negative first lens, positive second lens, negative third lens, positive fourth lens, positive fifth lens, and negative sixth lens in this order from an object side. At least one of second lens through sixth lens satisfies the following conditional expression (1), and the imaging lens, as a whole, satisfies the following conditional expression (2): (1/τi)×(f/fi)

    Abstract translation: 成像透镜从物体侧依次由负的第一透镜，正的第二透镜，负的第三透镜，正的第四透镜，正的第五透镜和负的第六透镜组成。 第二透镜至第六透镜中的至少一个满足以下条件表达式（1），并且整个成像透镜满足以下条件表达式（2）：（1 /τi）×（f / fi）<0（ 1）; 和＆Sgr（1 /τi）×（f / fi）<0（i = 1〜6）（2）。

    EXPOSURE SYSTEM, METHOD OF FORMING ALIGNMENT FILM, METHOD OF MANUFACTURING OPTICAL ELEMENT, AND OPTICAL ELEMENT
    5.
    发明公开
    EXPOSURE SYSTEM, METHOD OF FORMING ALIGNMENT FILM, METHOD OF MANUFACTURING OPTICAL ELEMENT, AND OPTICAL ELEMENT 审中-公开

    公开(公告)号：US20240319542A1

    公开(公告)日：2024-09-26

    申请号：US18680430

    申请日：2024-05-31

    Applicant: FUJIFILM Corporation

    Inventor： Masao MORI ,  Yu KITAHARA

    IPC: G02F1/1337 ,  G02F1/29 ,  G03F7/00

    CPC classification number: G02F1/133757 ,  G02F1/294 ,  G03F7/70225

    Abstract: Provided are an exposure system that simply manufactures an alignment film corresponding to an optical element where a focal length continuously changes, a method of forming an alignment film using the exposure system, a method of manufacturing an optical element using the alignment film, and an optical element. The exposure system includes: a light source; a beam splitter that splits light emitted from the light source; a beam combiner that combines the light split by the beam splitter and includes a first surface allowing transmission of light and a second surface reflecting light; focusing elements that is provided upstream of the beam combiner; and a polarization conversion element, in which one or more of the focusing elements have a focal length continuously changes in a direction orthogonal to an optical axis and away from the optical axis, and a ratio of a maximum value to a minimum value of the focal length is more than 1.1.

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