CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2008, Vol. 25 ›› Issue (3): 330-334.

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D-FFT Calculation of Collins' Formula

LI Junchang   

  1. Kunming University of Science and Technology, Kunming 650093, China
  • Received:2006-12-06 Revised:2007-06-06 Online:2008-05-25 Published:2008-05-25

Abstract: Collins' formula and its inverse calculation are expressed in a convolution form. Corresponding transfer function is deduced. Sampling theory conditions in fast Fourier transform (FFT) to calculate Collins' formula are discussed. Diffraction field as optic wave passes through an optical system and reconstruction of incident plane are shown.

Key words: diffraction calculation, Collins' formula, fast Fourier transform (FFT)

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