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1. 发明授权

US5013153A Interferometric gas component measuring apparatus for small gas molecules 失效
标题翻译：用于小气体分子的干涉气体组分测量装置
公开(公告)号：US5013153A
公开(公告)日：1991-05-07
申请号：US383461
申请日：1989-07-20
申请人： Rolf Disch , Wolfgang Hartig
发明人： Rolf Disch , Wolfgang Hartig
IPC分类号： G01J3/45 , G01J3/12 , G01J3/18 , G01J3/28 , G01N21/27 , G01N21/31 , G01N21/3504 , G02B27/28
CPC分类号： G01J3/12 , G01N21/31 , G02B27/28 , G01J2003/1291 , G01J3/1838 , G01J3/2803 , G01N2021/3129 , G01N2021/3137 , G01N21/3504
摘要： An interferometric gas component measurement apparatus has a light source (27), a measurement path (30) which contains the gas components to be measured, a polarizer (11), a double refracting plate arranged with its optical axis at 45.degree. to the polarization direction, two doubly refracting plates (14, 20) arranged with their optical axes at 45.degree. to one another and an analyzer (13). The light which passes through the measurement path is concentrated into an output gap (32) and reflected via a holographic concave grid (33) onto a diode row (22). The thickness of the individual plates is so selected that specific linear combinations of the thicknesses result in phase displacements between the beams polarized perpendicular to one another in the plates, with these phase displacements corresponding to the reciprocal of the quasi-periodic line splitting of selected vibration and/or rotation bands of the gas molecules of the gas components to be measured. The output signal of the diode row (22) and the output signal of a rotary position transducer (34) are applied to an electronic evaluation circuit which, at different rotational positions of the rotating plates (14, 20) determines the concentrations (C1, C2, C3) of gases present on the measurement path (30) from the signals received from the diode row (22) (FIG. 1).
摘要翻译：干涉气体成分测量装置具有光源（27），含有要测量的气体成分的测量路径（30），偏振器（11），将其光轴布置成与偏振成45°的双折射板方向，两个双折射板（14,20）以其光轴彼此成45°的方式布置，并且分析器（13）。穿过测量路径的光被集中到输出间隙（32）中，并通过全息凹栅格（33）反射到二极管行（22）上。各个板的厚度如此选择，使得厚度的特定线性组合导致在板中彼此垂直偏振的光束之间的相位偏移，这些相位位移对应于所选振动的准周期线分割的倒数和/或要测量的气体组分的气体分子的旋转带。二极管列（22）的输出信号和旋转位置传感器（34）的输出信号被施加到电子评估电路，其在旋转板（14,20）的不同旋转位置确定浓度（C1， C2，C3）从二极管排（22）（图1）接收的信号存在于测量路径（30）上的气体。

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