说明：  含有积分算法 依据光场分布的积分算法，使用积分算法计算探测面某点的光强 利用高斯光场的分布，计算不同探测角度的光强分布
(Integral algorithm. The integral algorithm is used to calculate the light intensity of a point on the detection surface by integral algorithm.. The distribution of Gauss light field is used to calculate the intensity distribution of different detection angles.)