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    • 4. 发明授权
    • Electronic endoscope having reduced diameter
    • 具有直径减小的电子内窥镜
    • US06533722B2
    • 2003-03-18
    • US09726342
    • 2000-12-01
    • Masaaki Nakashima
    • Masaaki Nakashima
    • A61B107
    • A61B1/05A61B1/06A61B1/0684
    • An electronic endoscope has a tip portion with a tip end. This electronic endoscope comprises an imaging element provided in the tip portion; an imaging optical system provided in the tip portion at a position closer to the tip end than the imaging element; and a plurality of light-emitting elements for emitting light, each of which is provided in the tip portion at a position closer to the tip end than the imaging element. Each of the light-emitting elements is arranged such that a part of the light-emitting element is seen so as to overlap with the imaging element when viewed from the optical axis direction of the imaging optical system. According to this arrangement, it is possible to reduce the diameter of the tip portion of the electronic endoscope. Further, when such an electronic endoscope is used as a medical endoscope, it becomes possible to relieve the pain that patients may feel.
    • 电子内窥镜具有尖端部,具有尖端。 该电子内窥镜包括设置在前端部的摄像元件, 成像光学系统,其设置在所述尖端部分中比所述摄像元件更靠近所述尖端的位置; 以及多个用于发光的发光元件,其中每个发光元件设置在尖端部分处于比成像元件更靠近尖端的位置处。 每个发光元件布置成使得当从成像光学系统的光轴方向观察时,可以看到发光元件的一部分与成像元件重叠。 根据该结构,能够减小电子内窥镜的前端部的直径。 此外,当这种电子内窥镜用作医疗内窥镜时,可以减轻患者感觉到的疼痛。