相干与非相干成像系统的比较。复习光学传递函数OTF的概念，以及该函数与相干传递函数CTF的关系。用OTF完成单透镜系统成像的计算。-The comparison of coherent and incoherent imaging system.Review the concept of OTF, optical transfer function and the function relations with CTF coherent transfer function.Complete th