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一种可用于光学准直的新型波带片在现代光学技术中，波带片已应用于准直、分束、互连和编码等多种领域。普通波带片的衍射斑中心是一较大的亮点，用于激光准直时，其准直精度不高。Ｊ．Ｏｊｅｄａ－Ｃａｓｔａｎｅｄａ等人［１］提出一种焦点处光强为零的振幅型波带片，利...
A new type of zone plate for optical collimation In modern optical technology, zone plates have been used in a variety of fields, including collimation, beam splitting, interconnection and encoding. The center of the diffraction spot of a normal zone plate is a big bright spot. When used for laser collimation, the collimation accuracy is not high. J. Ojeda-Castaneda et al [1] proposed a focus at zero intensity of the amplitude of the zone plate, the ...