根据超声波束的折射原理，采用超声速较大或较小，而衰减系 数又很小的材料作成超声聚焦透镜（Focusing lens），使声束聚 焦至焦平面处，集中超声能量，以有利于提高临床诊断效果。
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... self-focusing lens plate 自聚焦透镜板 self-focusing lens 自聚焦透镜 self-focusing optical fiber 自聚焦光纤 ...
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main focusing lens 主聚焦透镜 ; 主曝光
magnetostatic focusing lens 静磁聚焦透镜 ; 静磁会聚透镜
close-focusing lens 近聚焦镜头 ; 近调焦镜头
self-focusing lens plate 自聚焦透镜板
macro-focusing lens 微聚焦镜头
quadrupole focusing lens 四极调焦透镜
strong focusing lens 强聚焦透镜
electrostatic focusing lens 静电聚焦透镜
The theory of the self-focusing was used to explain the damage of the silica window and the focusing lens in the target chamber in the experiment, and the solution was also presented.
此外，结合实验过程中的实际情况，对靶室的石英窗口及打靶的聚焦透镜出现的破坏现象，采用自聚焦原理进行了分析，并提出了避免产生破坏的方法。
参考来源 - 靶场强激光频率变换及传输特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The focusing is effected after the deflection unit via a focusing lens in front of the scanner head.
通过扫描头前方聚焦透镜的反射单元，调焦发生了变化。
Its work principle and structure is presented. It consists of a PGP, a front collimated and a rear focusing lens.
阐述其工作原理和结构形式，包括PGP、准直物镜和成像物镜的设计要求。
A new type of focusing lens which can focus a laser beam into a line of any length and its possible applications are proposed.
提出了一种能把激光束聚焦成任意长度的新型直线聚焦透镜及其可能的应用。
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