视场

Many parameters are required to describe their performance, which is transmission ratio, extinctivity ratio, angle of view field, splitting angle, etc.

激光偏光棱镜技术参数较多，透射比、消光比、视场角、束角、长度孔径比等。

This paper introduced the Method of Dark-field Illumination to develop poroscopy on the glass, and some factors related to forming of poroscopy were also studied.

文章采用一种常用的配光方法―暗视场照明方法，显现光滑面玻璃上汗潜指印的汗孔细节特征，并对实验中影响汗孔细节特征形成的因素进行了初步研究。