title: Variations in the point spread function characteristics of wavelengths for a wavefront coding imaging system.
abstract: The point spread function (PSF) characteristics of wavelengths for a wavefront coding imaging system are investigated. Although the phase delayed by the mask changes with wavelength, the shape of the PSF is nearly invariant with respect to wavelength. However, the position of the PSF shifts with axial chromatic aberration. If the wideband light is separated into several channels and separated channel images are restored using the same filter, then color traces may be observed in the recombined color images.
authors.affiliation: School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China. zhangrongfu@usst.edu.cn
authors.forename: Rongfu
authors.initials: R
authors.lastname: Zhang
authors.forename: Kang
authors.initials: K
authors.lastname: Lu