详细地介绍了一种可用于分析大口径大视场二元光学系统的光栅矢量分析法ＢＫＫ方法。这种方法适用于光栅周期处于波长量级、任意光栅轮廓及倾斜入射时的精确衍射效率计算。给出了计算结果，并与标量近似计算结果进行比较。 A BKK method for grating vector analysis (BKK) which can be used to analyze large aperture large field of view binary optical system is introduced in detail. This method is suitable for accurate grating diffraction efficiency in the wavelength range of the grating period, arbitrary grating profile and oblique incidence. The calculation results are given and compared with the scalar approximation results.