关于空气间隔棱镜空气隙厚度的再研究

Research on air-gap thickness of air-spaced polarising prism

空气间隔偏振棱镜的气隙厚度可无穷减小,以获得大的半视场角,但其消光比将受到严重影响。本文给出获得高消光比的条件。

For the air-spaced polarising prism the air-gap thickness can be decreased infinitely to gain the large semi-field angle, or otherwise the extinction ratio is affected seri-ously. In this paper we give one of the conditions for gainiug high extinction ratio.