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    • 6. 发明授权
    • Objective lens system for endoscopes
    • 内窥镜物镜系统
    • US5208702A
    • 1993-05-04
    • US683018
    • 1991-04-10
    • Masaru Shiraiwa
    • Masaru Shiraiwa
    • G02B23/24
    • G02B9/34G02B23/243
    • An objective lens system for endoscopes comprising, in the order from the object side, a first lens component having a negative refractive power, a second lens component having a positive refractive power, an aperture stop arranged right after the second lens component, and a rear lens unit comprising a third lens component designed as a cemented doublet consisting of a lens element having a positive refractive power and a lens element having a negative refractive power. Said objective lens system for endoscopes has a wide field angle, a compact design, a small number of lens elements and favorably corrected aberrations.
    • 一种用于内窥镜的物镜系统,包括从物体侧开始具有负折光力的第一透镜部件,具有正屈光力的第二透镜部件,布置在第二透镜部件之后的孔径光阑,以及后部 透镜单元包括被设计为由具有正折光力的透镜元件和具有负屈光力的透镜元件组成的胶合双面的第三透镜部件。 所述用于内窥镜的物镜系统具有宽的视野角,紧凑的设计,少量的透镜元件和有利的校正像差。
    • 7. 发明授权
    • Observation system with an endoscope
    • 内窥镜观察系统
    • US5394499A
    • 1995-02-28
    • US167333
    • 1993-12-15
    • Katsuya OnoMasaru Shiraiwa
    • Katsuya OnoMasaru Shiraiwa
    • A61B1/04G02B6/06G02B23/26A61B1/06
    • A61B1/042G02B23/26G02B6/02042G02B6/06
    • An observation system for an endoscope has an entrance end face upon which an image is incident and an exit end face from which the image exits. The system comprises an image guide fiber of a very small diameter to allow transmission of the image, an object optical system arranged in front of the entrance end face of the image guide fiber, and a reproduction optical system arranged on the back side of the exit end face of the image guide fiber. The reproduction optical system is comprised of an eyepiece optical system and relay lens system. The maximal exit numerical aperture of the object optical system is greater than the maximal entrance numerical aperture of the reproduction optical system.
    • 内窥镜用观察系统具有摄影图像入射的入射端面和图像从其出射的出射端面。 该系统包括非常小直径的图像引导光纤,以允许图像传输,布置在图像引导光纤的入射端面前面的物体光学系统,以及布置在出口的后侧的再现光学系统 图像引导光纤的端面。 再现光学系统由目镜光学系统和中继透镜系统组成。 物体光学系统的最大出射数值孔径大于再现光学系统的最大入口数值孔径。