We develop an electrodynamic method for analysis of the near- and far-zone fields of dielectric lenses, which is based on solving a high-frequency integral equation. It is shown that the accuracy of this method is high for the lens size exceeding four wavelengths. Its advantages are fast internal convergence of the solution, short computation times, and small computer resources needed. The near-zone fields of lenses having various profiles and sizes of about ten wavelengths are analyzed.

中文翻译：

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小尺寸介电透镜的有效电动力学分析

我们开发了一种基于求解高频积分方程的电动力学方法来分析介电透镜的近区和远区场。结果表明，对于超过四个波长的透镜尺寸，该方法的精度较高。它的优点是解的内部收敛速度快、计算时间短、所需的计算机资源少。分析了具有大约十个波长的各种轮廓和尺寸的透镜的近区场。