无衍射光经望远镜系统的变换

对于轴锥镜透镜产生的无衍射光，它的中心光斑半径和无衍射距离是固定的，一旦应用中要求新的光束参数，则只能再制造一个新的轴锥镜透镜。本语文提出了种用普通球面透镜望远为改变无衍射光束参数的新方法，该方法是基于无射光和环光源之间的透镜变换关系。无衍射光首先被望远系统的第一块透镜变换为一个环光源，第二块不同焦距的透镜再将该环光源变换为一个不同参数的新无衍射光。新的光束参数由两个透的焦距比值决定 。

Transformation of Non-Diffracting Beams by a Telescope System

For non-diffracting beam generated by a axicon lens, its central spot diameter and non-diffracting distance are fixed. A new way to change the parameters of non-diffracting beam using a popular sphere lens telescope system is proposed based on the relationship of lens transform between non-diffracting beam and ring light source. The non-diffracing beam is firstly transformed to a ring light source by the first lens of telescope. And then the ring light source is transformed to a new non-diffracting beam with different parameters in terms of the second lens which has different focus. The new parameters are determined by the ratio of focus lengths of the two lenses.