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    Waveguide to be used as optical probe in multiple internal reflection spectroscopic analysis
    1.
    发明授权
    Waveguide to be used as optical probe in multiple internal reflection spectroscopic analysis 失效
    作为光学探针在多个内部反射光谱分析中使用的波形

    公开(公告)号：EP0209489B1

    公开(公告)日：1993-06-16

    申请号：EP86810288.0

    申请日：1986-06-25

    申请人： PRUTEC LIMITED

    发明人： Daehne, Claus ,  Bregnard, andré ,  Revillet, Georges ,  Sutherland, Ranald M.

    IPC分类号： G02B6/04 ,  G01N21/55 ,  G01N21/77 ,  G02B6/34

    CPC分类号： G01N21/552 ,  G02B6/10

    摘要： Waveguide apparatus for use in substance analysis has a waveguide, with a surface area in contact with the substance, for transmitting electromagnetic radiation along the axis of the waveguide whereby propagation characteristics of the radiation are altered in accordance with properties of the substance adjacent the waveguide. A waveguide entrance prism is positioned at the radiation entrance end of the waveguide, for guiding radiation into the waveguide. The prism has a first face arranged at an angle with the waveguide axis to cause radiation entering the prism to propagate along the waveguide. In one embodiment, a longitudinal partition is arranged adjacent the waveguide substantially parallel to the waveguide axis, for partitioning the waveguide surface area into at least two parts so that multi-substance analysis can be carried out. In another embodiment, the waveguide entrance prism includes a first face perpendicular to the waveguide axis, and second and third faces at an angle to both the waveguide axis and the first face. In effect, two entrance prisms are provided in the second embodiment. The second embodiment also includes a reflector and filter at the distal end of the waveguide to filter and reflect radiation back to the entrance prism.