A new type of high contrast filter has been investigated in this paper. lt has features of lower light reflection on surface, selective transmission and effective electromagnetic screen.
本文介绍自行研制的高对比度滤光片。它具有较低的表面光反射率、选择性透过率和电磁屏蔽特性。
2
It is a thin type of fan filter unit, like a screen. This unit has a distinctive function to prevent the infection being speared and to raise the cleanliness in local area.