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    • 1. 发明授权
    • Endoscope and endoscope apparatus
    • 内窥镜和内窥镜装置
    • US08390924B2
    • 2013-03-05
    • US13237197
    • 2011-09-20
    • Daisuke AkiyamaTakeshi SugaSatoshi TakekoshiKazuhiro Gono
    • Daisuke AkiyamaTakeshi SugaSatoshi TakekoshiKazuhiro Gono
    • G02B21/06G02B23/26
    • A61B1/0646A61B1/00096A61B1/00186G02B23/2423
    • An endoscope includes: a first illumination optical system which emits illuminating light in a first linear polarization direction to an object from a distal end face of an insertion portion; and a first objective optical system which allows return light from the object to enter through an objective window provided in the distal end face; wherein the first illumination optical system and the first objective optical system are placed in a positional relationship such that on the distal end face, a line segment connecting an optical axis of the first illumination optical system and an optical axis of the first objective optical system is parallel or perpendicular to a polarization direction which results when the illuminating light emitted from the first illumination optical system is projected to the distal end face, and no polarizing element is provided between the object and the objective window.
    • 内窥镜包括:第一照明光学系统,其从插入部的远端面向物体照射第一线偏振方向的照明光; 以及第一物镜光学系统,其允许来自物体的返回光通过设置在远端面中的物镜窗进入; 其特征在于,所述第一照明光学系统和所述第一物镜光学系统的位置关系使得在所述前端面上连接所述第一照明光学系统的光轴和所述第一物镜光学系统的光轴的线段为 平行或垂直于当从第一照明光学系统发射的照明光被投射到远端面时产生的偏振方向,并且在物体和物镜窗之间不设置偏振元件。
    • 4. 发明授权
    • Method and apparatus for foreign matter detection for blood content sensors
    • 血液含量传感器异物检测方法及装置
    • US08888680B2
    • 2014-11-18
    • US12168418
    • 2008-07-07
    • Kazuhiro GonoTakeshi Suga
    • Kazuhiro GonoTakeshi Suga
    • A61B1/04A61B1/06A61B1/12A61B5/00A61B1/00A61B5/07
    • A61B1/041A61B1/00009A61B1/00057A61B1/0638A61B1/126A61B5/0075A61B5/0086A61B5/073
    • Apparatus and methods for detecting foreign material obstructing a blood content sensor window to facilitate higher data accuracy from such sensors, in accordance with one embodiment of the invention for detecting foreign matter with the blood content sensor when the blood content sensor is not contacted with living tissue, an illuminator for blood content detection and the blood content sensor share a common outer window. When the window is at a distance from tissue and in absence of foreign matter on the window, all or most of the emitted light will be dispersed and little or no light will be reflected back into the sensor. Conversely, when the window is at a distance from tissue and foreign matter is present on the window, a substantial portion of the emitted light will be reflected back into the sensor indicating the presence of the foreign matter.
    • 根据本发明的一个实施例,当血液含量传感器不与生物组织接触时,用于检测异物的阻挡血液含量传感器窗口以便于更高数据精度的装置和方法, ,用于血液含量检测的照明器和血液含量传感器共享共同的外窗。 当窗口距离组织一定距离并且在窗口上没有异物时,所有或大部分发射的光将被分散,很少或没有光将被反射回到传感器中。 相反,当窗口距离组织一定距离并且异物存在于窗口上时,发射的光的大部分将被反射回到传感器中,指示异物的存在。