incident face meaning in English

入射面

The outcome suggest that , firstly , the change of light transmission with the continuous change of parameters is periodic ; secondly , as far as the degree of effect is concerned , the light transmission of air - spaced prisms is much more sensitive to the change of the parameters than that of the glue spaced ones ; thirdly , as to the prisms glued with the same dielectric , the effect of prisms whose optical axis parallels to the glued layer is intense than those whose optical axis parallels to the plane determines by the normal of incident face and that of the cut face
研究认为，激光偏光棱镜的光强透射比随各参量的连续变化都呈现出一定的周期性；各参量对空气隙型偏光棱镜的影响要比对胶合型棱镜的影响大的多；同种介质胶合的棱镜，各参量对光轴平行于切割斜面的设计类型比光轴平行于切割面的法线和入射端面的法线所组成的平面的设计类型的影响要大。