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公开(公告)号：US08070304B2
公开(公告)日：2011-12-06
申请号：US11813462
申请日：2006-01-13
IPC分类号： G02B27/00
CPC分类号： G02B7/022 , G02B5/005 , G02B13/003
摘要： A lens unit including a first lens including a first lens section having a first optical axis along which light passes, and a second lens. The second lens includes a second lens section having a second optical axis along which light passes, and a flange provided at the outer circumferential part of the second lens section and having a surface opposed to the first lens, and a tubular section extending from the flange in the direction of the second optical axis and having an inner side face opposed to the second lens section. The first lens is fitted in the tubular section and in contact with the inner side face of the tubular section of the second lens. The tubular section of the second lens has a plurality of protrusions protruding in the direction of the second optical axis and a plurality of valleys provided between the protrusions.
摘要翻译： 一种透镜单元，包括具有第一透镜部分的第一透镜，所述第一透镜部分具有光通过的第一光轴和第二透镜。 第二透镜包括具有光通过的第二光轴的第二透镜部分和设置在第二透镜部分的外圆周部分并具有与第一透镜相对的表面的凸缘，以及从凸缘延伸的管状部分 在第二光轴的方向上具有与第二透镜部相对的内侧面。 第一透镜安装在管状部分中并与第二透镜的管状部分的内侧面接触。 第二透镜的管状部分具有沿着第二光轴的方向突出的多个突起和设置在突起之间的多个谷。
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公开(公告)号：US4415240A
公开(公告)日：1983-11-15
申请号：US171759
申请日：1980-07-24
申请人： Kimihiko Nishioka , Nobuo Yamashita
发明人： Kimihiko Nishioka , Nobuo Yamashita
CPC分类号： A61B1/00096 , A61B1/07 , G02B23/2469
摘要： An illumination optical system for an endoscope in which, by arranging a cylindrical reflection member between a light guide and a lens system, a distribution curve of luminous intensity is improved with the effective utilization of illumination light and yet the formation of the image of the light guide end face on the object surface is obviated, thereby enabling attainment of a uniform illumination over the object surface.
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公开(公告)号：US4029397A
公开(公告)日：1977-06-14
申请号：US452670
申请日：1974-03-19
申请人： Nobuo Yamashita
发明人： Nobuo Yamashita
摘要： A retrofocus-type wide-angle photographic lens system having a predetermined airspace in said lens system and arranged to be focused on an object at a short distance and, at the same time, to prevent aggravation of aberrations by moving a rear lens group positioned on the image side of said airspace toward a front lens group positioned on the object side of said airspace.
摘要翻译： 一种在所述透镜系统中具有预定空域并被布置为在短距离上聚焦在物体上并且同时通过移动位于其上的后透镜组来防止像差加重的后焦距型广角摄影透镜系统 所述空气空间的图像侧朝向位于所述空域的物体侧的前透镜组。
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公开(公告)号：USPP8676P
公开(公告)日：1994-04-05
申请号：US920618
申请日：1992-07-27
摘要： A new and distinct variety, called "Benifuji", of a pink dogwood tree substantially as herein shown and described characterized particularly as to novelty by the unique combination of the appearance of a large number of branches with an upright limb growth habit, as tall as the known variety "Miss Satomi", having leaves of medium size substantially equivalent to the wild varieties, a flower diameter of approximately 8-9 cm with the color of the flower being deep purplish pink and the distance between branches being small. The plant substantially does not become unbalanced as a result of trimming.
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公开(公告)号：US4684224A
公开(公告)日：1987-08-04
申请号：US550206
申请日：1983-11-09
申请人： Nobuo Yamashita , Susumu Takahashi
发明人： Nobuo Yamashita , Susumu Takahashi
CPC分类号： G02B17/04 , G02B23/2423 , G02B23/26
摘要： A field of view direction changing optical system comprising an incident face intersecting at right angles with the optical axis of the light from the observation field of view forming an angle .theta. with respect to an optical axis of an image transmitting optical system, a first reflecting face forming an angle .theta./2 with respect to said incident face and a prism having a second reflecting face parallel to said incident face or coincident with it, in order to prevent the occurrence of astigmatism and to enable that the positioning adjustment at assemblage can be done easily. On the second reflecting face a parallel plane glass is secured and on said parallel plane glass a plano-concave lens aligned to said optical axis forming an angle .theta. with respect to the optical axis of the image transmitting optical axis may be secured.
摘要翻译： 一种视野方向改变光学系统，包括与来自观察视场的光的光轴相交的入射面相对于图像传输光学系统的光轴形成角度θ;第一反射面 形成相对于所述入射面的角度θ/ 2和具有与所述入射面平行或与其重合的第二反射面的棱镜，以便防止散光的发生，并且能够进行组装时的定位调节 容易。 在第二反射面上固定平行平面玻璃，并且在所述平行平面玻璃上可以确保相对于图像透射光轴的光轴形成角度θ的与所述光轴对准的平凹透镜。
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公开(公告)号：US4398811A
公开(公告)日：1983-08-16
申请号：US358664
申请日：1982-03-16
申请人： Kimihiko Nishioka , Nobuo Yamashita
发明人： Kimihiko Nishioka , Nobuo Yamashita
CPC分类号： G02B23/2407 , A61B1/00165 , A61B1/00183
摘要： A viewing-direction changing optical system comprising an optical fiber bundle, a reflecting means arranged to deflect the optical axis to a direction different from the axis of the optical fiber bundle, and lenses arranged in front and rear (the object side and image side) of the reflecting means, the viewing-direction changing optical system being arranged to change the viewing direction by sliding the reflecting means in the direction of optical axis.
摘要翻译： 一种观察方向改变光学系统，包括光纤束，设置成将光轴偏转到与光纤束的轴线不同的方向的反射装置，以及前后（物体侧和像侧）布置的透镜， 所述观察方向改变光学系统被布置成通过沿着所述光轴的方向滑动所述反射装置来改变观察方向。
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公开(公告)号：US4350149A
公开(公告)日：1982-09-21
申请号：US56299
申请日：1979-07-10
申请人： Nobuo Yamashita , Miwako Maeda
发明人： Nobuo Yamashita , Miwako Maeda
CPC分类号： A61B1/00165 , A61B1/00096 , G02B23/2469
摘要： An illumination optical system for use in an endoscope comprises a glass pane disposed in front of a source of illuminating light and which is centrally defined with a reflecting surface which is inclined with respect to the optical axis of the source. Light passing through the source in alignment with the optical axis thereof illuminates a near object while light passing through the source offset from its optical axis illuminates a far object.
摘要翻译： 在内窥镜中使用的照明光学系统包括：玻璃板，其设置在照明光源的前方，并且中心地具有相对于光源的光轴倾斜的反射面。 通过光源与光轴对准的光照射近物体，而穿过光源的光偏离其光轴的光照射远物体。
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公开(公告)号：US4195904A
公开(公告)日：1980-04-01
申请号：US867498
申请日：1978-01-06
申请人： Nobuo Yamashita
发明人： Nobuo Yamashita
CPC分类号： G02B23/2423 , A61B1/00096 , A61B1/00165 , A61B1/00177 , A61B1/0615
摘要： An optical system of viewing-direction changing attachment for endoscopes comprising a first reflecting means having a reflecting surface for changing the observing direction and a second reflecting means having a reflecting surface for changing the illuminating direction and arranged so that the reflecting surface for changing the illuminating direction comes to a fore position compared with the reflecting surface for changing the observing direction in order to enable to illuminate and observe a wide area being free from ghost image and flare.
摘要翻译： 一种用于内窥镜的观察方向改变附件的光学系统，包括具有用于改变观察方向的反射表面的第一反射装置和具有用于改变照明方向的反射表面的第二反射装置，并且被布置成使得用于改变照明 与用于改变观察方向的反射面相比，能够照明和观察没有重影图像和耀斑的广泛区域的前进方向。
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公开(公告)号：US4140364A
公开(公告)日：1979-02-20
申请号：US857991
申请日：1977-12-05
CPC分类号： G02B23/2423 , A61B1/00165 , A61B1/00183
摘要： A variable field optical system for endoscopes comprising an image guide, objective, fixed prism and rotatable prism and enabling to observe over a wide range by varying the field by rotating said rotatable prism.
摘要翻译： 一种用于内窥镜的可变场光学系统，包括图像引导件，物镜，固定棱镜和可旋转棱镜，并且能够通过旋转所述可旋转棱镜来改变场来在宽范围内观察。
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公开(公告)号：US4111529A
公开(公告)日：1978-09-05
申请号：US777442
申请日：1977-03-14
申请人： Nobuo Yamashita
发明人： Nobuo Yamashita
CPC分类号： A61B1/002 , A61B1/018 , G02B23/243
摘要： An optical system for an endoscope having the optical axis of an objective parallely shifted from the center line of an image fiber so that the center of the field of observation of the objective coincides with the position of a forceps means or with the center of the field of illumination of a light guide. The objective comprises first, second and third lens components wherein the first is a negative singlet, the second a positive singlet meniscus and the third a cemented positive doublet and wherein the stop is between the first and second components.
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