根据标量衍射理论,提出了4阶二元光学元件制作误差对衍射效率影响的解析表达式,对此解析公式展开了讨论,并与计算机模拟结果进行了比较,两者吻合得很好,且与实验结果基本符合。 According to the scalar diffraction theory, an analytical expression of the influence of the error of the fourth-order binary optical element on the diffraction efficiency is proposed. The analytical formula is discussed and compared with the computer simulation results. The two agree well with each other The experimental results are basically in line.