Combination of color coding and wavefront coding for extended depth of field

被引：5

作者：

Cao, Zhaolou ^{[1
]}

Zhai, Chunjie ^{[2
]}

Li, Jinhua ^{[1
]}

Xian, Fenglin ^{[1
]}

Pei, Shixin ^{[1
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Sch Phys & Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China

[2] Nanjing Forest Police Coll, Dept Forest Fire Protect, Nanjing 210008, Jiangsu, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2017年 / 392卷

基金：

中国国家自然科学基金;

关键词：

Extended depth of field; Chromatic aberration; Wavefront coding; SYSTEM; MICROSCOPY; ABERRATION;

D O I：

10.1016/j.optcom.2017.02.016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Color coding has been experimentally demonstrated to be able to extend the depth of field (DoF) of an imaging system in single snapshot. A numerical model is adopted in this paper to quantitatively characterize its imaging properties (strehl ratio, point spread function and modulation transfer function). To improve the system's performance under nonuniform spectrum, we proposed to introduce wavefront coding into the system. Numerical results show that wavefront coding acts as an average filter of the spectrum, so that it is able to get an almost invariant MTF across the focal line even under nonuniform spectrum, which is desirable in many applications.

引用

页码：252 / 257

页数：6

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