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用衍射积分理论在较为一般的情况下，对激光束通过随机位相板后的准远场特性进行了理论分析和数值模拟研究．主要分析了随机位相板的光斑匀滑、光斑包络控制以及斑纹抑制等重要特性，得到了一些新的结果，对随机位相板的应用有参考意义．
With the theory of diffraction integral, the quasi-far-field characteristics of the laser beam passing through a random phase plate are studied theoretically and numerically under the more general conditions. This paper mainly analyzes the important characteristics of random phase plate, such as spot smoothing, spot envelope control and speckle suppression. Some new results are obtained, which is of significance to the application of random phase plate.