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    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME
    1.
    发明申请
    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME 审中-公开

    公开(公告)号：US20180074289A1

    公开(公告)日：2018-03-15

    申请号：US15808278

    申请日：2017-11-09

    Applicant: OLYMPUS CORPORATION

    Inventor： Keisuke ICHIKAWA ,  Shinichi MIHARA

    IPC: G02B9/64

    CPC classification number: G02B9/64 ,  G02B5/005 ,  G02B7/021 ,  G02B7/04 ,  G02B9/00 ,  G02B13/00 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/02 ,  G02B13/18 ,  G02B21/36

    Abstract: A single-focus optical system includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power. The first lens unit includes at least a first sub-unit, a second sub-unit, and a third sub-unit. The first sub-unit includes one of, a one negative lens component and a plurality of negative lens components that are continuous, the second sub-unit includes two meniscus lens components having respective concave surfaces thereof facing mutually, and the third sub-unit includes a plurality of positive lens components disposed closest to the reduction side in the third sub unit. The second lens unit includes one negative lens component. The third lens unit includes negative lens, and also includes a positive lens component closest to the enlargement side. All air spaces in the first lens unit are constant.

    ZOOM LENS, IMAGE PICKUP APPARATUS USING THE SAME, IMAGE TRANSMISSION APPARATUS, AND IMAGE TRANSMISSION SYSTEM
    2.
    发明申请
    ZOOM LENS, IMAGE PICKUP APPARATUS USING THE SAME, IMAGE TRANSMISSION APPARATUS, AND IMAGE TRANSMISSION SYSTEM 有权
    变焦镜头，使用其的图像拾取装置，图像传输装置和图像传输系统

    公开(公告)号：US20130258130A1

    公开(公告)日：2013-10-03

    申请号：US13627275

    申请日：2012-09-26

    Applicant: OLYMPUS CORPORATION

    Inventor： Shinichi MIHARA ,  Ryu OTA

    IPC: G02B15/14 ,  H04N5/232

    CPC classification number: G02B15/14 ,  G02B15/17 ,  G02B15/173 ,  H04N5/23229

    Abstract: A zoom lens includes in order from an object 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 negative refractive power, a fourth lens group having a positive refractive power, a fifth lens group having a positive refractive power, and a last lens group having a positive refractive power. At the time of zooming from a wide angle end to a telephoto end, the second lens group and the third lens group move, and one of the fourth lens group, the fifth lens group, and the last lens group moves.

    Abstract translation: 变焦透镜从物体侧依次包括具有正折光力的第一透镜组，具有负屈光力的第二透镜组，具有负折光力的第三透镜组，具有正折光力的第四透镜组 具有正屈光力的第五透镜组和具有正屈光力的最后透镜组。 在从广角端到长焦端的变焦时，第二透镜组和第三透镜组移动，并且第四透镜组，第五透镜组和最后一个透镜组中的一个移动。

    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME
    3.
    发明申请
    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME 审中-公开

    公开(公告)号：US20180314043A1

    公开(公告)日：2018-11-01

    申请号：US16026997

    申请日：2018-07-03

    Applicant: OLYMPUS CORPORATION

    Inventor： Keisuke ICHIKAWA ,  Shinichi MIHARA

    IPC: G02B15/173 ,  G02B13/02 ,  G02B13/18 ,  G02B9/14

    Abstract: A single-focus optical system includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power. The first lens unit includes either a first sub unit, a second sub unit, and a third sub unit, or one positive lens component in addition to the first sub unit, the second sub unit, and the third sub unit. The first sub-unit includes one negative lens component or a plurality of negative lens components, the second sub-unit includes two meniscus lens components, and the third sub-unit includes a plurality of positive lens components. The third lens unit includes a front side sub-unit and a rear side sub-unit. The front side sub-unit includes only a positive lens component.

    WIDE-ANGLE OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS USING THE SAME
    7.
    发明申请
    WIDE-ANGLE OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS USING THE SAME 有权

    公开(公告)号：US20210255439A1

    公开(公告)日：2021-08-19

    申请号：US17189679

    申请日：2021-03-02

    Applicant: OLYMPUS CORPORATION

    Inventor： Takashi FUJIKURA ,  Keisuke ICHIKAWA ,  Shinichi MIHARA

    IPC: G02B13/04 ,  G02B15/14

    Abstract: A wide-angle optical system includes a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. At the time of carrying out a focal-position adjustment, the second lens unit is moved. The third lens unit includes a positive single lens on an image side of a cemented surface Sc having a negative refractive power nearest to an image in the third lens unit, and has a plurality of refractive surfaces having a negative refractive power on the object side of the cemented surface Sc. The third lens unit has at least one refractive surface Sp having a positive refractive power which satisfies following conditional expression (1): 0.02

    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME
    8.
    发明申请
    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME 审中-公开

    公开(公告)号：US20190033563A1

    公开(公告)日：2019-01-31

    申请号：US16147677

    申请日：2018-09-29

    Applicant: OLYMPUS CORPORATION

    Inventor： Keisuke ICHIKAWA ,  Shinichi MIHARA

    IPC: G02B13/18 ,  G02B13/00 ,  G02B9/34

    Abstract: A single-focus optical system includes a front lens unit and a rear lens unit. The front lens unit either includes a predetermined sub lens unit or includes an enlargement-side sub lens unit and a predetermined sub lens unit. The rear lens unit includes a first sub lens unit, a second sub lens unit, a third sub lens unit, and a fourth sub lens unit. The enlargement-side sub lens unit includes a negative lens component. The predetermined sub lens unit includes an enlargement-side meniscus lens component and a reduction-side meniscus lens component. The first sub lens unit includes positive lenses and a first predetermined negative lens. The second sub lens unit includes a predetermined negative lens component. The third sub lens unit includes a predetermined positive lens component. The fourth sub lens unit includes all lens components positioned on the reduction side of the predetermined positive lens component.

    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME
    9.
    发明申请
    SINGLE-FOCUS OPTICAL SYSTEM AND OPTICAL APPARATUS USING THE SAME 审中-公开

    公开(公告)号：US20180052300A1

    公开(公告)日：2018-02-22

    申请号：US15800320

    申请日：2017-11-01

    Applicant: OLYMPUS CORPORATION

    Inventor： Keisuke ICHIKAWA ,  Shinichi MIHARA

    IPC: G02B9/64 ,  G02B13/18

    CPC classification number: G02B9/64 ,  G02B5/005 ,  G02B7/021 ,  G02B7/04 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/04 ,  G02B13/18 ,  G02B21/36

    Abstract: A single-focus optical system includes a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit includes a reduction-side lens component closest to the reduction side, and a shape of the reduction-side lens component is a meniscus shape having a convex surface directed toward the enlargement side. The second lens unit includes a cemented lens of a meniscus shape having a convex surface directed toward the reduction side, and a plurality of positive lens components. The cemented lens in the second lens unit includes a negative lens and a positive lens. The third lens unit includes a negative lens component closest to the enlargement side. All air spaces in the first lens unit and in the second lens unit are constant at the time of focusing.

    IMAGE PICKUP APPARATUS AND CAPSULE ENDOSCOPE
    10.
    发明申请
    IMAGE PICKUP APPARATUS AND CAPSULE ENDOSCOPE 审中-公开

    公开(公告)号：US20170336625A1

    公开(公告)日：2017-11-23

    申请号：US15452821

    申请日：2017-03-08

    Applicant: OLYMPUS CORPORATION

    Inventor： Takahiro AMANAI ,  Ayami IMAMURA ,  Shinichi MIHARA

    IPC: G02B27/00 ,  G02B23/24

    Abstract: An image pickup apparatus includes an image forming optical system having an aperture stop, a first lens, and a second lens, and an imager having a light-receiving surface that is curved to be concave toward the image forming optical system, and a relative partial dispersion for a medium of the first lens differs from a relative partial dispersion for a medium of the second lens, and when a straight line indicated by θgFLA=α×υdLA+βLA (where α=−0.00163) has been set, θgFLA and υdLA for the medium of the first lens are included in both of an area determined by the following conditional expression (1) and an area determined by the following conditional expression (2), andthe following conditional expression (3) is satisfied: 0.68

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