Article ID Journal Published Year Pages File Type
5449618 Optics Communications 2017 6 Pages PDF
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
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