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    Endoscope objective optical system
    11.
    发明授权
    Endoscope objective optical system 有权

    公开(公告)号：US09706906B2

    公开(公告)日：2017-07-18

    申请号：US15225892

    申请日：2016-08-02

    Applicant: OLYMPUS CORPORATION

    Inventor： Yasushi Namii ,  Ikutoshi Fukushima

    IPC: A61B1/00 ,  G02B13/04 ,  G02B23/26 ,  G02B23/24

    CPC classification number: A61B1/00193 ,  A61B1/00096 ,  G02B13/04 ,  G02B23/2415 ,  G02B23/243 ,  G02B23/26

    Abstract: Provided is a small endoscope objective optical system that allows stereoscopic viewing even though a wide angle is used, that reduces the F-number, and that also reduces vignetting.Provided is an endoscope objective optical system that consists of, sequentially from the object side, a negative first lens group, a positive second lens group, and a pair of third lens groups that are disposed side-by-side in the direction of parallax and that form two optical images with parallax, wherein aperture stops are individually provided in the third lens groups, and conditional expression M below is satisfied: Fob_n/Fob_p>−0.5   (1), where Fob_n is a focal length of the first lens group, and Fob_p is a focal length of the second lens group.

    Image processing apparatus, image processing method, and endoscope
    13.
    发明授权
    Image processing apparatus, image processing method, and endoscope 有权

    公开(公告)号：US10912444B2

    公开(公告)日：2021-02-09

    申请号：US16108634

    申请日：2018-08-22

    Applicant: OLYMPUS CORPORATION

    Inventor： Ikutoshi Fukushima

    IPC: A61B1/00 ,  G06T7/62 ,  G02B23/24 ,  G02B5/00 ,  A61B5/06 ,  A61B1/05

    Abstract: In order to acquire height information regarding a subject disposed on the internal surface of an elongated tubular member, an image processing apparatus according to the present disclosure, includes a processor the processor including hardware and configured to perform the steps of receiving a first image and a second image acquired from a subject using an optical system having a field of view in a direction of at least about 90° to a central axis of the optical system, the first image acquired at a first position, the second image acquired at a second position, the second position different from the first position along the central axis; and calculating a distance between the subject and the central axis of the optical system, based on a distance between the first position and the second position, and based on the corresponding points in the third image and in the fourth image.

    Image acquisition device
    14.
    发明授权
    Image acquisition device 有权

    公开(公告)号：US10520719B2

    公开(公告)日：2019-12-31

    申请号：US15861602

    申请日：2018-01-03

    Applicant: OLYMPUS CORPORATION

    Inventor： Ikutoshi Fukushima

    IPC: G02B23/24

    Abstract: An image acquisition device including: an imaging optical system forming two images having parallax; and an element acquiring the parallax images, the imaging optical system includes: a first negative lens group having negative refractive power; a first positive lens group having positive refractive power; and a second positive lens group having positive refractive power, the first negative lens group includes two negative lens groups disposed side by side in the parallax direction and having central axes respectively, the first positive lens group is a common lens group having a single central axis, and light rays emitted from the negative lens groups pass therethrough, the second positive lens group includes two positive lens groups disposed side by side in the parallax direction and having central axes respectively and the first positive lens group includes a moving lens group moved along the central axis of the first positive lens group.

    IMAGE-ACQUISITION APPARATUS
    15.
    发明申请
    IMAGE-ACQUISITION APPARATUS 审中-公开

    公开(公告)号：US20180095262A1

    公开(公告)日：2018-04-05

    申请号：US15832090

    申请日：2017-12-05

    Applicant: OLYMPUS CORPORATION

    Inventor： Ikutoshi Fukushima

    IPC: G02B23/24 ,  A61B1/00 ,  G02B23/26 ,  G03B35/10

    CPC classification number: G02B23/2415 ,  A61B1/00 ,  A61B1/00096 ,  A61B1/00193 ,  G02B23/2438 ,  G02B23/26 ,  G03B35/10

    Abstract: An image-acquisition apparatus is provided with: an imaging optical system; and an image-acquisition device that acquires parallax images, wherein the imaging optical system is provided with a first negative lens group, a first positive lens group, and a second positive lens group, wherein the first positive lens group and the first negative lens group are disposed along a common center axis, wherein the second positive lens group is provided with two positive lens groups that are disposed next to each other in a parallax direction on either side of the common center axis and that individually have center axes, wherein two aperture stops having openings, wherein the first positive lens group has only one moving lens group that is moved, and wherein all of remaining lens components in the imaging optical system, excluding the moving lens group, remain still.

    Image acquisition apparatus
    17.
    发明授权
    Image acquisition apparatus 有权
    图像采集装置

    公开(公告)号：US09571728B2

    公开(公告)日：2017-02-14

    申请号：US14281633

    申请日：2014-05-19

    Applicant: OLYMPUS CORPORATION

    Inventor： Masao Sambongi ,  Ikutoshi Fukushima

    IPC: H04N5/232 ,  H01L27/146

    CPC classification number: H04N5/23229 ,  H01L27/14627

    Abstract: A stable combined image is generated from a plurality of image signals having parallax and obtained at different focal positions. An image acquisition apparatus includes an image-acquisition optical system that collects light from a subject; an image acquisition element that acquires an image of the light collected by the image-acquisition optical system; a micro-lens array having an array of multiple micro-lenses arranged such that each micro-lens covers multiple pixels of the image acquisition element; and a focal-length changing section that is disposed at a pupil position of the image-acquisition optical system and that spatially changes a focal length so as to focus light passing therethrough at a plurality of different focal positions.

    Abstract translation: 从具有视差的多个图像信号生成稳定的组合图像，并且在不同焦点位置获得。 图像获取装置包括：收集来自被摄体的光的图像采集光学系统; 获取由所述图像采集光学系统收集的光的图像的图像获取元件; 具有多个微透镜的阵列的微透镜阵列，其布置成使得每个微透镜覆盖图像采集元件的多个像素; 以及焦距变化部，其设置在所述摄像光学系统的光瞳位置，并且在空间上改变焦距，以便在多个不同的焦点位置聚焦通过其中的光。

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