傅里叶光学中的反算相位法，用以解决生物光子学中的光源点的问题。代码实现了3*3的点阵绘图，并表示出作为入射光的相位。-The inverse Fourier optics phase method to solve the problem of bio-photonics light source point. Code implements the dot plot 3* 3, and expressed as the phase of the incident light.