通过面积编码将伽博(Gabor)波带片的透过率函数的余弦分布等效为二元分布,研制了能产生各种特殊聚焦图形的二元光学元件.根据透镜聚焦的物理原理制作的二元振幅型波带片可以方便地产生多种聚焦线,给出了相应的实验结果,并讨论了改善聚焦效果的优化条件.

By using the area encoding, the continuous transmittance of Gabor zone plate is transformed into binary amplitude distribution. The binary optical element which can generate arbitrary focused curves is designed. Experimental results are presented and discussions on the improvement of focusing performance are given.