A satisfactory approximation to monochromatic light can be obtained with a filter placed in front of the arc. 在碳弧前面放一个滤光片就可以得到令人满意的近单色光。
This article firstly advances the designing of a wide wave band polarization rotator by using Polarization Interference Filter. 首次提出了基于偏振干涉滤光片设计方法的宽波带偏振方向旋转器。
