GUI光学薄膜多层膜系反射率分析，绘制反射率与波长、角度的函数曲线，计算带宽-Optical thin film multilayer reflectivity analysis, draw the function curve of reflectivity and wavelength, angle, calculate bandwidth

采用矩阵法和等效界面法进行光学薄膜膜系反射率,不考虑色散(The reflectivity of optical thin film is calculated by matrix method and equivalent interface method, without considering dispersion.)