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    • 66. 发明公开
    • ENDOSCOPE OBJECTIVE OPTICAL ASSEMBLY
    • OPTISCHE ANORDNUNG MIT EINEM ENDOSKOPOBJEKTIV
    • EP2851727A1
    • 2015-03-25
    • EP13790655.8
    • 2013-05-15
    • Olympus Medical Systems Corp.
    • MORITA, Kazuo
    • G02B13/04A61B1/00G02B23/26
    • A61B1/00A61B1/00163A61B1/00188A61B1/002A61B1/051G02B9/12G02B23/243
    • The diameter of an endoscope insertion portion is reduced, and a wide field angle of an endoscope insertion portion is obtained. An endoscope objective optical system includes, from an object side, a first lens formed of a plano-concave lens having a concave surface facing an image side, a second lens formed of a plano-concave lens having a concave surface facing the object side, an aperture stop, and a third lens formed of a plano-convex lens having a plane surface facing the object side, and satisfies 0.7 ≤ fab / f ≤ 0.9 1.7 ≤ fe / fab ≤ 2 2 ≤ fb / fa ≤ 4
      where f: focal length of the entire system; fa: focal length of the first lens; fb: focal length of the second lens; fe: represents focal length of the third lens; fab: ombined focal length from the first lens to the second lens.
    • 内窥镜插入部的直径减小,获得内窥镜插入部的宽视场角。 内窥镜物镜光学系统包括从物体侧开始由具有凹面朝向像侧的平凹透镜形成的第一透镜,由具有面向物体侧的凹面的平凹透镜形成的第二透镜, 孔径光阑,以及由具有面向物体侧的平面的平凸透镜形成的第三透镜,满足0.7‰¤¤‰¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤ ‰¤4其中f:整个系统的焦距; fa:第一透镜的焦距; fb:第二透镜的焦距; fe:表示第三透镜的焦距; 晶圆厂:从第一透镜到第二透镜的配焦焦距。
    • 69. 发明公开
    • Endoscope
    • 内窥镜
    • EP2695567A1
    • 2014-02-12
    • EP13155759.7
    • 2013-02-19
    • Olympus Corporation
    • Kato, Takahiko
    • A61B1/00A61B1/05
    • G02B23/2469A61B1/00163A61B1/051
    • An endoscope includes: an objective optical section including a plurality of optical lenses, and a first barrel that houses the optical lenses, the optical lenses being integrally and fixedly provided therein; an image pickup optical section including a solid image pickup device, an optical member that forms an optical image passed through the objective optical section on an image pickup surface of the solid image pickup device, and a second barrel that houses the optical member and the solid image pickup device, the optical member and the solid image pickup device being integrally and fixedly provided therein, the second barrel being arranged so as to fit with the first barrel, and being fixed to the first barrel in an integrated manner via bonding after adjustment in position in an axial direction relative to the first barrel; a holding member formed of material having a linear expansion coefficient lower than a linear expansion coefficient of the first barrel and a linear expansion coefficient of the second barrel, the holding member being fixed to a predetermined position on an outer surface of the first barrel and a predetermined position on an outer surface of the second barrel via bonding; a first adhesive that bonds the first barrel and the second barrel to each other; and a second adhesive having a bonding strength higher than that of the first adhesive, the second adhesive bonding the holding member to the outer surface of the first barrel and the outer surface of the second barrel.
    • 内窥镜包括:包括多个光学透镜的物镜光学部分,以及容纳光学透镜的第一镜筒,所述光学透镜整体地并且固定地设置在其中; 图像拾取光学部分,其包括固体图像拾取装置;光学部件,其在固体图像拾取装置的图像拾取表面上形成穿过物镜光学部分的光学图像;以及第二镜筒,其容纳光学部件和固体 图像拾取装置,所述光学构件和所述固体图像拾取装置被一体地且固定地设置在其中,所述第二镜筒被布置为与所述第一镜筒配合,并且在调整之后通过结合被一体地固定到所述第一镜筒 相对于第一筒体在轴向方向上的位置; 保持部件,其由线膨胀系数比所述第一筒体的线膨胀系数低且所述第二筒体的线膨胀系数低的材料形成,所述保持部件被固定在所述第一筒体的外表面上的规定位置, 通过结合在第二筒的外表面上的预定位置; 第一粘合剂,其将所述第一筒和所述第二筒彼此粘合; 以及具有比第一粘合剂的粘合强度更高的粘合强度的第二粘合剂,第二粘合剂将保持构件粘合到第一镜筒的外表面和第二镜筒的外表面。
    • 70. 发明公开
    • ENDOSCOPE OBJECTIVE OPTICAL SYSTEM
    • OPTISCHES OBJEKTIVSYSTEMFÜREIN ENDOSKOP
    • EP2648026A1
    • 2013-10-09
    • EP12801919.7
    • 2012-06-13
    • Olympus Medical Systems Corp.
    • KANAZAWA, AkariIGARASHI, Tsutomu
    • G02B13/04A61B1/00G02B23/26
    • A61B1/00195A61B1/00096A61B1/00163A61B1/00188G02B9/34G02B23/243
    • Provided is an endoscope objective optical system that has a relatively narrow angle, a small outer diameter, and a short overall length and that allows simultaneous correction for field curvature and comatic aberration. An endoscope objective optical system (1) includes, in order from an object side, a first lens (2) composed of a negative single lens, a second lens (3) composed of a positive single lens, an aperture stop (4), a third lens (5) composed of a positive single lens, and a fourth lens (6) composed of a positive combined lens. The endoscope objective optical system (1) satisfies the following conditions:
      (1) 0.3 n1, and (4) 0.6
      wherein Df is the distance from a surface of the first lens facing the object side to the aperture stop, f is the focal length of the entire system, n1 is the refractive index of the first lens (d-line), n2 is the refractive index of the second lens (d-line), and IH is the maximum image height of the entire system.
    • 本发明提供一种内窥镜物镜光学系统,其具有相对窄的角度,小的外径和短的总长度,并且允许对场曲率和彗形像差的同时校正。 内窥镜物镜光学系统(1)从物体侧依次包括由负单透镜构成的第一透镜(2),由正单透镜构成的第二透镜(3),孔径光阑(4), 由正单透镜组成的第三透镜(5)和由正组合透镜组成的第四透镜(6)。 内窥镜物镜光学系统(1)满足以下条件:(1)0.3 n1和(4)0.6