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    • 3. 发明授权
    • Optical system for endoscope
    • 内窥镜光学系统
    • US4746203A
    • 1988-05-24
    • US96344
    • 1987-09-11
    • Kimihiko NishiokaTsutomu YamamotoSusumu TakahashiAkira Yokota
    • Kimihiko NishiokaTsutomu YamamotoSusumu TakahashiAkira Yokota
    • A61B1/05G02B17/02G02B23/24H04N5/225A61B1/04G02B5/04G02B5/22G02B5/30
    • H04N5/2253A61B1/05G02B17/02G02B23/2423H04N2005/2255
    • An optical system is disclosed for an endoscope having a generally tubular distal end in which an objective lens assembly and an image sensor in the form of a solid-state video camera are internally housed so that an image formed by the lens assembly is focussed upon the input or pickup surface of the video camera. The video camera is disposed along or in proximity to the center axis of the distal end of the endoscope and in some instances is oblique with respect to the center axis. The video camera may be positioned in this way due to the provision of a reflecting surface which is angularly disposed in opposing relationship with an input surface of the video camera, and deflection means disposed in front of the lens assembly and within the objective lens assembly, or between the lens assembly and the reflecting surface so that an image formed by the lens assembly can be focussed on the input surface of the video camera.
    • 公开了一种用于内窥镜的光学系统,其具有大致管状的远端,其中物镜组件和固态摄像机形式的图像传感器在内部被容纳,使得由透镜组件形成的图像聚焦在 输入或摄像机表面。 视频摄像机沿着或靠近内窥镜的远端的中心轴设置,并且在一些情况下相对于中心轴线倾斜。 由于提供了与摄像机的输入表面成对角关系地设置的反射表面以及设置在透镜组件前面和物镜组件内的偏转装置,摄像机可以以这种方式定位, 或者在透镜组件和反射表面之间,使得由透镜组件形成的图像可以聚焦在摄像机的输入表面上。
    • 6. 发明授权
    • Objective lens system for an endoscope
    • 用于内窥镜的物镜系统
    • US4867546A
    • 1989-09-19
    • US170703
    • 1988-03-14
    • Kimihiko NishiokaKikumi TojoAkira Yokota
    • Kimihiko NishiokaKikumi TojoAkira Yokota
    • G02B13/04G02B13/18G02B23/24
    • G02B23/243G02B13/06
    • An objective lens system for an endoscope comprising a front lens unit, a stop, and a rear lens unit wherein the front lens unit comprises a lens component arranged that the surface on the object side thereof is formed as an aspherical surface having portions whose curvature is made gradually stronger as they are farther from the optical axis or a lens component arranged that the surface on the image side thereof is formed as an aspherical surface having portions whose curvature is made gradually weaker as they are farther from the optical axis, and the rear lens unit comprises a lens component arranged that the surface on the image side thereof is formed as an aspherical surface having portions whose curvature is made gradually stronger as they are farther from the optical axis or a lens component arranged that the surface on the object side thereof is formed as an aspherical surface having portions whose curvature is made gradually weaker as they are farther from the optical axis, the objective lens system for an endoscope being arranged that distortion and curvature of field are corrected favorably.
    • 一种用于内窥镜的物镜系统,其包括前透镜单元,止挡件和后透镜单元,其中,所述前透镜单元包括透镜部件,所述透镜部件布置成使得物体侧的表面形成为非球面,所述非球面具有曲率为 随着它们离开光轴更远,或者使得其像侧的表面形成为非球面的透镜部件,其具有随着其远离光轴而使曲率逐渐变弱的部分的非球面,并且后 透镜单元包括透镜部件,其布置成使得其像侧上的表面形成为非球面,该非球面表面的曲率随着离开光轴的距离逐渐变强,或者透镜部件被布置为使得其物体侧的表面 形成为具有其曲率逐渐变弱的部分的非球面,因为它们离光轴更远 e用于内窥镜的物镜系统被布置成有利地校正畸变和曲率。
    • 10. 发明授权
    • Measuring endoscope
    • 测量内窥镜
    • US4656508A
    • 1987-04-07
    • US742057
    • 1985-06-06
    • Akira Yokota
    • Akira Yokota
    • A61B1/04A61B1/00A61B1/06G01B11/24G01B11/25G02B23/26H04N5/225H04N7/18
    • H04N5/2256G01B11/2509H04N5/2254H04N2005/2255
    • A measuring endoscope for making three-dimensional measurements of a object without using a special lattice and without hampering direct observation of the object. The measuring endoscope includes a light supply source for supplying illumination, and an illumination variation device for providing a plurality of particular illuminations, and illumination transmission means including a plurality of fiber optic cables. The fiber optic cables have a first input section separated from a second input section. The second section receives one particular illumination which the first section does not. At the output end of the fiber optic cables, fiber optic cables from the first section are interlaced, row-by-row with the fiber optic cables from the second section. An illumination lens then directs the light from the fiber optic cables onto the object. A lattice-shaped light pattern then appears on the object. Light reflected from the object is received by an objective lens system and is directed to an imaged sensor. The image sensor includes a large number of regularly arranged picture elements. Image processing devices then convert the received image into electrical signals. The image processing means process selected electrical signals from among all electrical signals received. These selected electrical signals are obtained from picture elements from positions where the lattice of the object image is formed on the light receiving surface. These selected electrical signals may then be processed to provide a three-dimensional measurement of the object. A control device controls the supply of light to the fiber optic cables to ensure that the light is emitted from the fiber optic cables in a lattice form. Finally, a display device connected to the image processor provides a display according to the three-dimensional image of the object.
    • 一种测量内窥镜,用于在不使用特殊格子的情况下进行物体的三维测量,并且不妨碍对物体的直接观察。 测量内窥镜包括用于提供照明的光源和用于提供多个特定照明的照明变化装置,以及包括多个光纤电缆的照明传输装置。 光纤电缆具有与第二输入部分分离的第一输入部分。 第二部分接收第一部分没有的特定照明。 在光纤电缆的输出端,来自第一部分的光纤电缆与第二部分的光纤电缆并排。 然后照明透镜将来自光纤电缆的光引导到物体上。 然后在物体上出现格子状的光图案。 从物体反射的光由物镜系统接收并被引导到成像的传感器。 图像传感器包括大量规则排列的图像元素。 图像处理装置然后将接收的图像转换成电信号。 图像处理装置从所接收的所有电信号中处理所选择的电信号。 这些选择的电信号是从在光接收表面上形成物体图像的格子的位置的图像元素获得的。 然后可以处理这些所选择的电信号以提供对象的三维测量。 控制装置控制向光纤电缆的光的供应,以确保光以格子形式从光纤电缆发射。 最后,连接到图像处理器的显示装置根据对象的三维图像提供显示。