The introduction of binary optical elements, theory of diffractive lenses, fabrication of binary optical elements and trends are related.
本文介绍了二元光学元件的概况，衍射透镜理论，二元光学元件的制造方法以及发展趋势。
The designed system benefits from the specialities of binary optical elements and approaches diffraction limitation by use of only two germanium lenses.
借助于二元光学器件的独特性质，系统在仅使用两片锗透镜的情况下得到了接近衍射极限的光学质量。
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