对额外程差中两个电矢量方向的再探讨

The New Researches about the Two Electric Vectors of Additional Optical Path Deference

对额外程差中的两个电矢量，笔者在文［１］中给出了ｎ１＜ｎ２情况下的电矢量表达式，本文将推导出ｎ１＞ｎ２情况下的电矢量数学表达式，并给出两电矢量的空间角度表．

In the paper [1], the author obtained the two electric vector expressions at the condition of n_1 <n_2. As further research, this paper considered the conditon of n_2<n_1, and derives the corresponding electric vector expressions. The data table of the space angle between the two vectors also is shown in the article.