School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Opt Lett. 2011 Dec 1;36(23):4647-9. doi: 10.1364/OL.36.004647.
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.
研究了波前编码成像系统的波长的点扩散函数 (PSF) 特性。尽管掩模延迟的相位随波长而变化，但 PSF 的形状几乎与波长无关。然而，PSF 的位置随轴向色差而移动。如果将宽带光分为几个通道，并使用相同的滤波器恢复分离通道的图像，则在组合的彩色图像中可能会观察到颜色痕迹。
