equipotential lens

例句：

1. 1.The equipotential lens is used to focus light onto a target surface.
   等势透镜用于将光线聚焦到目标表面。
2. 2. The equipotential lens was designed to improve the accuracy of the measurement.
   等势透镜被设计用来提高测量的准确性。
3. 3. The equipotential lens is essential for maintaining the stability of the system.
   等势透镜对于保持系统的稳定性至关重要。