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介绍了两种二元光学组合元件：一种是两个线型波带板的组合，其效果相当于两个柱面透镜的组合；另一种是一个线型波带板和一个圆型波带板的组合，效果相当于一个凸透镜和一个柱面透镜的组合。这两种元件在x方向的焦距均为y方向焦距的两倍，如果把物放在此二种元件前fx焦平面处，则在元件后fx焦平面上，x方向可以产生傅里叶频谱，y方向可以产生等大倒像，从而具有多通道频谱分析的功能。给出了制作这两种元件的原理、方法、参数和相应的实验结果。
Two kinds of binary optical combination elements are introduced: one is a combination of two linear wave plate plates, the effect of which is equivalent to a combination of two cylindrical lenses; the other is a linear plate plate and a circular wave With plate combination, the effect is equivalent to a combination of a convex lens and a cylindrical lens. The focal lengths of these two elements in the x direction are both twice the focal length in the y direction. If the object is placed on the fx focal plane before these two elements, then the Fourier spectrum in the x direction can be generated on the fx focal plane after the element , Y direction can produce other large inverted image, which has the function of multi-channel spectrum analysis. The principle, method, parameters and the corresponding experimental results of the two components are given.