对于一个好的光学系统,都应该具备有透过率高、象质好和低散射的性能。一些反射镜除了应该具备有象质好和低散射以外,还应该具有反射率高的特点。对于入射窗玻璃和其它类型的光学玻璃均应该具有内部吸收小、表面和体内散射低和象质好等优点。对于光学零件所成的象一般都比较容易计算,但是由表面微 For a good optical system, should have a high transmittance, good image quality and low scattering properties. In addition to some of the mirror should have a good quality and low scattering, it should also have high reflectivity. For incident windows and other types of optical glass should have the advantages of small internal absorption, low surface and in vivo scattering and good image quality. For the optical components into the image are generally easier to calculate, but by the surface micro