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7 条记录 (耗时 0.018 秒)

    Optical system, imaging apparatus, endoscope system, and rangefinder system
    3.
    发明授权
    Optical system, imaging apparatus, endoscope system, and rangefinder system 有权

    公开(公告)号：US10653298B2

    公开(公告)日：2020-05-19

    申请号：US15793717

    申请日：2017-10-25

    申请人： OLYMPUS CORPORATION

    发明人： Takayoshi Togino

    IPC分类号： A61B1/00 ,  G02B17/08 ,  G02B23/24 ,  G02B23/26

    摘要： The optical system is characterized by a rotationally symmetric front group that is located on a single axis of rotational symmetry passing through the center of an image plane, a rotationally symmetric back group, and an aperture, wherein the front group includes two internal reflecting surfaces and two transmitting surfaces, a light beam incident from at least one object plane on the front group forms an optical path along which the light beam enters a first transmitting surface, is reflected off a first reflecting surface and then off a second reflecting surface, and exits out of a second transmitting surface, and the light beam passes through the back group and aperture and is imaged in a position of the image plane away from the axis of rotational symmetry without being intermediately imaged within a section including the axis of rotational symmetry.

    Optical system, stereoscopic imaging device, and endoscope
    4.
    发明授权
    Optical system, stereoscopic imaging device, and endoscope 有权

    公开(公告)号：US10274717B2

    公开(公告)日：2019-04-30

    申请号：US15208653

    申请日：2016-07-13

    申请人： OLYMPUS CORPORATION

    发明人： Takayoshi Togino

    IPC分类号： G02B23/24 ,  G02B23/18 ,  A61B1/00 ,  G03B35/10 ,  G02B13/00 ,  G02B27/00

    摘要： An optical system 1 includes, in order from an object side to an image plane side, a front group Gf including a first front group Gf1 arranged centering a first front central axis Cf1 and a second front group Gf2 arranged centering a second front group central axis Cf2 as a rotation symmetry axis extending parallel to the first front group central axis Cf1; and a back group Gb arranged centering a single back group central axis Cb. A central principal ray of a first light beam L1 that has passed through the first front group Gf1 and a central principal ray of a second light beam L2 that has passed through the second front group Gf2 do not cross each other from when they exit from the back group Gb to when they reach the image plane.

    Wide-angle optical system, image pickup apparatus, and image pickup system
    7.
    发明授权
    Wide-angle optical system, image pickup apparatus, and image pickup system 有权

    公开(公告)号：US11906712B2

    公开(公告)日：2024-02-20

    申请号：US17517071

    申请日：2021-11-02

    申请人： OLYMPUS CORPORATION

    发明人： Takayoshi Togino

    IPC分类号： G02B13/06 ,  H04N13/207 ,  G02B17/08

    CPC分类号： G02B13/06 ,  G02B17/0856 ,  H04N13/207

    摘要： A wide-angle optical system includes a pair of front side lens units, an optical member, and a pair of rear side lens units. Each of the pair of front side lens units has a negative refractive power. The optical member has a pair of inclined surfaces and a bottom surface, and the pair of inclined surfaces is disposed such that a line of intersection is formed on an object side. Each of the pair of rear side lens units includes a positive lens, and in the pair of rear side lens units, two axes of rotational symmetry are parallel. With respect to two light rays, intersection and reflection occur at the optical member, and the intersection and the reflection occur after the two light rays are transmitted through the pair of inclined surfaces and before two light rays are transmitted through the bottom surface.