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公开(公告)号：US20210055531A1
公开(公告)日：2021-02-25
申请号：US16999666
申请日：2020-08-21
Inventor： Genki NAKAZAWA , Takao YAMANAKA , Yoshiaki KURIOKA
Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having positive power; a fifth lens group having negative power; and a following lens group following the fifth lens group. The first to fifth lens groups and the following lens group are arranged in this order such that the first lens group is located closest to an object and that the following lens group is located closest to an image. While the zoom lens system is zooming, intervals between the respective lens groups change. While the zoom lens system is focusing from an infinity focus point through a shortest shooting range, a plurality of negative lens groups included in the fifth lens group and the following lens group move.
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公开(公告)号：US20190312999A1
公开(公告)日：2019-10-10
申请号：US16437372
申请日：2019-06-11
Inventor： Yoshiaki KURIOKA , Takahiro KITADA
Abstract: An imaging optical system includes lens group Gm located on that is closest to an object among lens groups in which a distance between the lens groups changes during zooming, the lens groups having negative power. Lens group Gm includes, in order from the object side toward an image side, lens element LGmF1 having the negative power, lens element LGmF2 having the negative power, both surfaces of lens element LGmF2 having an aspherical shape, and at least two lens elements having power. The present disclosure provides the imaging optical system having good various aberrations such as spherical aberration, astigmatism, and distortion and an imaging device and a camera system that are provided with the imaging optical system.
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公开(公告)号：US20160195691A1
公开(公告)日：2016-07-07
申请号：US15070507
申请日：2016-03-15
Inventor： Takakazu BITO , Shunichiro YOSHINAGA , Hideki KAI , Tsutomu IWASHITA , Yoshiaki KURIOKA , Aya TOMITA , Hisayuki II
CPC classification number: G02B9/34 , G02B3/04 , G02B5/005 , G02B9/04 , G02B13/002 , G02B13/0045 , G02B13/0065 , G02B13/04 , G02B13/18 , G02B13/24 , G02B15/14 , G02B15/177 , G02B27/0025
Abstract: An imaging optical system, in order from an object side to an image side, includes: a first lens unit having positive optical power; and a second lens unit. In focusing from an infinity in-focus condition to a close-object in-focus condition, the first lens unit moves along an optical axis, and the second lens unit is fixed with respect to an image surface. The imaging optical system is compact, sufficiently suppresses occurrence of various aberrations, has high resolution from the infinity in-focus condition to the close-object in-focus condition, is bright and highly efficient, and is suitable for wide-angle photographing.
Abstract translation: 成像光学系统从物体侧到像侧依次包括：具有正光焦度的第一透镜单元; 和第二透镜单元。 在从无限远对焦状态到近距离对焦状态的对焦中，第一透镜单元沿着光轴移动，并且第二透镜单元相对于图像面固定。 成像光学系统紧凑，足以抑制各种像差的发生，从无限远对焦状态到近距离对焦状态具有高分辨率，是高亮度且高效的，适用于广角拍摄。
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公开(公告)号：US20250150698A1
公开(公告)日：2025-05-08
申请号：US19018647
申请日：2025-01-13
Inventor： Yoshiaki KURIOKA , Takahiro Kitada
Abstract: An imaging optical system includes lens group Gm located on that is closest to an object among lens groups in which a distance between the lens groups changes during zooming, the lens groups having negative power. Lens group Gm includes, in order from the object side toward an image side, lens element LGmF1 having the negative power, lens element LGmF2 having the negative power, both surfaces of lens element LGmF2 having an aspherical shape, and at least two lens elements having power. The present disclosure provides the imaging optical system having good various aberrations such as spherical aberration, astigmatism, and distortion and an imaging device and a camera system that are provided with the imaging optical system.
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公开(公告)号：US20240241349A1
公开(公告)日：2024-07-18
申请号：US18242171
申请日：2023-09-05
Inventor： Takehiro NISHIOKA , Yoshiaki KURIOKA
CPC classification number: G02B13/0045 , G02B9/64 , G02B27/646
Abstract: An imaging optical system consists of a first lens group having positive power, an aperture stop, a second lens group having positive power, a third lens group having negative power, a fourth lens group having positive power, and a fifth lens group having negative power. The first lens group, the aperture stop, and the second, third, fourth, and fifth lens groups are arranged in this order such that the first lens group is located closer to an object than the aperture stop or the second, third, fourth, or fifth lens group is. While the imaging optical system is focusing to make a transition from an infinity in-focus state toward a close-object in-focus state, the first, third, and fifth lens groups are located at respectively fixed distances from an image plane in a direction aligned with an optical axis, and the second and fourth lens groups move along the optical axis.
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Patent Agency Ranking
公开(公告)号：US20220382010A1
公开(公告)日：2022-12-01
申请号：US17750878
申请日：2022-05-23
Inventor： Yasuto SUZUKI , Yoshiaki KURIOKA , Shunichiro YOSHINAGA
Abstract: An imaging optical system includes a first lens group having positive power, a second lens group, and a third lens group. The first lens group includes a sub-lens group G1A, an aperture stop, and a sub-lens group G1B. The sub-lens group G1A includes a lens L1A1 and a lens L1A2. An object-side surface of the lens L1A1 is convex toward an object. The third lens group includes a lens L3E having negative power and a lens L3P located adjacent to, and closer to the object than, the lens L3E.
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7.发明申请SINGLE FOCAL LENGTH IMAGING OPTICAL SYSTEM, LENS BARREL, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM 审中-公开单焦点长成像光学系统，镜头条，可互换镜头装置和相机系统公开(公告)号：US20150268449A1
公开(公告)日：2015-09-24
申请号：US14631100
申请日：2015-02-25
Inventor： Yoshiaki KURIOKA , Takehiro NISHIOKA
CPC classification number: G02B15/177 , G02B13/0045
Abstract: A single focal length imaging optical system, in order from an object side to an image side, comprising: a front unit composed of a plurality of lens elements; an aperture diaphragm; and a rear unit composed of a plurality of lens elements, wherein the front unit, in order from the object side to the image side, includes a lens element having negative optical power, a lens element having negative optical power, and a lens element having positive optical power, and includes a lens element having positive optical power and placed closest to the image side, and the rear unit includes a focusing lens unit which is composed of at least one lens element and moves along an optical axis in focusing from an infinity in-focus condition to a close-object in-focus condition, and a lens element having negative optical power and placed closest to the image side.
Abstract translation: 单个焦距成像光学系统从物体侧到像侧依次包括：由多个透镜元件组成的前部单元; 孔径光阑; 以及由多个透镜元件构成的后部单元，其中，从所述物体侧到所述像侧，所述前部单元包括具有负光焦度的透镜元件，具有负光焦度的透镜元件，以及具有 正光学功率，并且包括具有正光学功率并且最靠近图像侧布置的透镜元件，并且后单元包括聚焦透镜单元，该聚焦透镜单元由至少一个透镜元件组成并且沿着光轴从无限远聚焦移动 焦点对准状态，以及具有负光焦度并且最靠近图像侧布置的透镜元件。
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公开(公告)号：US20230305278A1
公开(公告)日：2023-09-28
申请号：US18205155
申请日：2023-06-02
Inventor： Genki NAKAZAWA , Takao YAMANAKA , Yoshiaki KURIOKA
CPC classification number: G02B15/20 , G02B13/18 , G02B15/22 , G02B13/009 , G02B15/1461
Abstract: A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having positive power; a fifth lens group having negative power; and a following lens group following the fifth lens group. The first to fifth lens groups and the following lens group are arranged in this order such that the first lens group is located closest to an object and that the following lens group is located closest to an image. While the zoom lens system is zooming, intervals between the respective lens groups change. While the zoom lens system is focusing from an infinity focus point through a shortest shooting range, a plurality of negative lens groups included in the fifth lens group and the following lens group move.
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公开(公告)号：US20230171477A1
公开(公告)日：2023-06-01
申请号：US18095240
申请日：2023-01-10
Inventor： Yoshiaki KURIOKA , Takahiro KITADA
Abstract: An imaging optical system includes lens group Gm located on that is closest to an object among lens groups in which a distance between the lens groups changes during zooming, the lens groups having negative power. Lens group Gm includes, in order from the object side toward an image side, lens element LGmF1 having the negative power, lens element LGmF2 having the negative power, both surfaces of lens element LGmF2 having an aspherical shape, and at least two lens elements having power. The present disclosure provides the imaging optical system having good various aberrations such as spherical aberration, astigmatism, and distortion and an imaging device and a camera system that are provided with the imaging optical system.
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10.发明申请公开(公告)号：US20200233190A1
公开(公告)日：2020-07-23
申请号：US16742430
申请日：2020-01-14
Inventor： Hiroaki SUZUKI , Yuka KUDO , Yoshiaki KURIOKA
Abstract: A zoom lens system includes: a first group of lenses having positive power; a second group of lenses having negative power; a third group of lenses having positive power; a fourth group of lenses having negative power; and a fifth group of lenses having power, which are arranged in this order from an object toward an image. While this system is zooming, intervals between these groups change and the fifth group of lenses moves toward the object. This system satisfies 0.12
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