An improved Fresnel waveguide lens is presented.
本文提出一种新型的费涅尔波导透镜。
It is the method that the focal of waveguide lens can be measured precisely, its error depends on the precision of reading microscope.
对焦点位于波导外部(包括端面)的情况给出了一种精确测量焦距新方法。
Waveguide to be fitted-the first acoustic lens system ever fitted to a Dual Concentric.
波导须安装-第一个声学透镜系统都安装在双同心。
Waveguide to be fitted-the first acoustic lens system ever fitted to a Dual Concentric.
波导须安装-第一个声学透镜系统都安装在双同心。
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