光学材料和透镜的性能,可以按其透射率和调制传递函数(MTF)进行分类。在8～13微米波段,材料的总透射率不如可见光光学系统。要评价在远红外区工作的材料和镀膜乃至完整的透镜系统,了解这一参数是十分重要的。MTF是为人们广泛使用和接受的测量成像质量的参数。在远红外区能快速和直接测量这一函数的方法,在评价热成像透镜样品和 The properties of optical materials and lenses can be classified by their transmission and modulation transfer function (MTF). In the 8 to 13 micron band, the total transmittance of the material is inferior to the visible light optical system. To evaluate materials and coatings that work in the far-infrared region and even complete lens systems, it is important to understand this parameter. MTF is a widely used and accepted parameter for measuring imaging quality. In the far-infrared region can quickly and directly measure this function of the method, in the evaluation of thermal imaging lens samples and