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公开(公告)号：US09602733B2
公开(公告)日：2017-03-21
申请号：US14704632
申请日：2015-05-05
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ichikawa , Shinichi Mihara
IPC: G02B9/34 , H04N5/232 , G02B15/177
CPC classification number: H04N5/23296 , G02B13/18 , G02B15/177 , G02B15/20
Abstract: An image forming optical system includes, a negative first lens unit, a positive second lens unit, a negative third lens unit, and a positive fourth lens unit, and the first lens unit either includes a negative lens and a positive lens, or includes a negative lens, a negative lens, and a positive lens, and the second lens unit includes a first lens component and a second lens component, and the second lens component includes a cemented lens, and the third lens unit includes either one lens or two lenses as a whole, and a lens having a curvature of a surface on an image side larger than a curvature of a surface on the object is disposed nearest to an object, and the fourth lens unit includes one positive lens component.
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公开(公告)号：US12085707B2
公开(公告)日：2024-09-10
申请号：US17189353
申请日：2021-03-02
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ichikawa , Takashi Fujikura , Shinichi Mihara , Yoshihiro Uchida
CPC classification number: G02B23/243 , G02B15/143507
Abstract: A wide-angle optical system is a wide-angle optical system having a lens component, and includes in order from an object side, a first lens unit having a negative refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power. At the time of carrying out a focal-position adjustment from a far point to a near point, the second lens unit is moved from a first position toward a second position. The third lens unit includes not less than three lens components. Not less than three lens components include a first lens component and a second lens component. Each of the first lens component and the second lens component has a positive refractive power, and following conditional expression (1) is satisfied:
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公开(公告)号：US10830991B2
公开(公告)日：2020-11-10
申请号：US16147677
申请日：2018-09-29
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ichikawa , Shinichi Mihara
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.
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公开(公告)号：US10031322B2
公开(公告)日：2018-07-24
申请号：US15608421
申请日：2017-05-30
Applicant: OLYMPUS CORPORATION
Inventor： Shinichi Mihara , Hirokazu Konishi , Toyoharu Hanzawa , Masahito Watanabe , Atsujiro Ishii , Tetsuhide Takeyama , Ayami Imamura
CPC classification number: G02B13/0065 , G02B13/0045 , G02B13/006 , G02B13/007 , G02B13/0075 , G02B13/009 , G02B15/14 , G02B15/16 , H04N5/2253 , H04N5/2254 , H04N5/23238 , H04N5/23296
Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.
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公开(公告)号：US10197769B2
公开(公告)日：2019-02-05
申请号：US15808278
申请日：2017-11-09
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ichikawa , Shinichi Mihara
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.
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Patent Agency Ranking
公开(公告)号：US10197768B2
公开(公告)日：2019-02-05
申请号：US15800320
申请日：2017-11-01
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ichikawa , Shinichi Mihara
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.
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7.发明授权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：US08941926B2
公开(公告)日：2015-01-27
申请号：US13627275
申请日：2012-09-26
Applicant: Olympus Corporation
Inventor： Shinichi Mihara , Ryu Ota
IPC: G02B15/14
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。
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公开(公告)号：US12117602B2
公开(公告)日：2024-10-15
申请号：US17189679
申请日：2021-03-02
Applicant: OLYMPUS CORPORATION
Inventor： Takashi Fujikura , Keisuke Ichikawa , Shinichi Mihara
CPC classification number: G02B23/243 , A61B1/00163 , G02B13/04 , G02B15/143507 , A61B1/00183
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-
公开(公告)号：US10663705B2
公开(公告)日：2020-05-26
申请号：US16026997
申请日：2018-07-03
Applicant: OLYMPUS CORPORATION
Inventor： Keisuke Ichikawa , Shinichi Mihara
IPC: G02B13/16 , G02B15/173 , G02B9/14 , G02B13/02 , G02B13/18 , G02B27/14 , G02B15/177
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.
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10.发明授权公开(公告)号：US10551617B2
公开(公告)日：2020-02-04
申请号：US15452821
申请日：2017-03-08
Applicant: OLYMPUS CORPORATION
Inventor： Takahiro Amanai , Ayami Imamura , Shinichi Mihara
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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