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Effect of Axicons on the Depth-of-field of Non-diffracting Imaging System
Author(s): 
Pages: 29-33
Year: Issue:  1
Journal: OPTOELECTRONIC TECHNOLOGY

Keyword:  成像系统景深轴锥镜点扩散函数;
Abstract: 在介绍轴锥镜线焦特性的基础上,分析了轴锥镜对成像系统景深的影响.根据轴锥镜镜的线焦特性,阐述了基于轴锥镜的大景深成像系统的基本原理,并设计了两步成像的大景深成像系统.通过对该系统点扩散函数和景深的分析,发现可以通过改变轴锥镜的角度来实现不同景深的成像系统.对轴锥镜夹角分别为θ1=0.01和θ2=0.25的两个成像系统,其景深分别为D1=323.59 mm,D2=122 mm.实验结果表明轴锥镜能增大光学系统的景深,夹角越大景深范围越小.
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