详细介绍了偏振光产生的基本原理及其在表征热解炭光学各向异性程度上的应用。它能把消光角的测量直接反映出热解炭的光学各向异性程度。消光角的大小直接反映了微观织构的取向程度 :消光角越大 ,织构取向越好 ,微观组织越光滑平整 ,而在偏振光下图像层次感越丰富 ,且由于粗糙层热解炭的柱状生长锥特征对光线的阻断作用而使得偏振光图像显得粗糙 The basic principle of polarized light generation and its application in characterizing the optical anisotropy of pyrolytic carbon are introduced in detail. It can measure the extinction angle directly reflects the degree of optical anisotropy of pyrolytic carbon. The size of the extinction angle directly reflects the degree of orientation of the micro texture: the larger the extinction angle, the better the texture orientation, the smoother the microstructure, and the richer the image sense in the polarized light, The characteristics of the columnar growth cone block the light and make the polarized image appear coarse