Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5449618 | Optics Communications | 2017 | 6 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Zhaolou Cao, Chunjie Zhai, Jinhua Li, Fenglin Xian, Shixin Pei,