Complex Amplitude Filters for Extended Depth of Field


  • Jorge Ojeda-Castaneda University of Guanajuato, Mexico
  • E. Yépez-Vidal University of Guanajuato, Mexico
  • E. García-Almanza University of Guanajuato, Mexico



We present a complex amplitude transmittance filter that reduces the impact of focus errors on the modulation transfer function (MTF). The new filter combines the use of a cubic phase mask and a Gaussian apodizer, which reduces the oscillations in the MTF. We propose the use of a tendency curve, of several MTFs, for evaluating the departures of the tendency MTF, as a Euclidian distance in hyperspace.

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Author Biography

Jorge Ojeda-Castaneda, University of Guanajuato, Mexico

Electronics Department, Professor




How to Cite

J. Ojeda-Castaneda, E. Yépez-Vidal, and E. García-Almanza, “Complex Amplitude Filters for Extended Depth of Field”, Photonics Lett. Pol., vol. 2, no. 4, pp. pp. 162–164, Dec. 2010.