利用S分量透射比实现非可见光垂直入射的研究

Use S Component′s Transmittance to Realize the Normal Incidence of Non-visible Light

在应用光学技术和光的测量技术中,常常需要光线垂直入射.理论研究发现S分量的透射比随入射角减小而单调增大,P分量的透射比随入射角的变化是非单调的,自然光透射比随入射角减小而增大的程度远不如S分量的高.实验还证明了当各向均匀薄板对入射的S分量有吸收时,S分量的光强透射比随入射角增大而下降更加迅速这一特点.因此,利用S分量透射比随入射角变化的独特规律,我们找到了一种实现非可见光垂直入射简便可行的方法.

In applied optics and light survey technology, it is need for us to make light normal incident in many cases. Theoretically, with the increasing of incident angle, the transmittance of S component decreases monotonously, while the transmittance of P component does not change monotonously. Compared with S component, the change rate of natural light＇s transmittance is very small. The experiment shows that the transmittance of S component will decrease more quickly than that on theory owing to the absorption of isotropic board. Therefore, based on the special rule of the change of S component＇s transmittance, a new way to realize the normal incidence of non-visible light is found.