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Proceedings Paper

Mode Of Image Formation Of Averaged Speckled Images
Author(s): H. M Escamilla; E. R. Mendez; M. Sanchez-Abundis
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Paper Abstract

The averaged speckled images of coherently illuminated objects consisting of a diffuser in contact with a transparency are analysed taking into account the structure of theaffuser. Averaged images for sinusoidal amplitude gratings are calculated for both, strong and weak phase diffusers. For strong diffusers the mode of image formation is in general a partially coherent one, and departures from linearity become important when the correlation areas of the diffuser and of the resolution cell are comparable. For weak diffusers the resulting average image can be expressed mathematically as the incoherent sum of two images: one formed in a coherent mode and due to the direct component, and another one produced in a partially coherent mode and due to the diffuse component.

Paper Details

Date Published: 2 December 1988
PDF: 11 pages
Proc. SPIE 0976, Statistical Optics, (2 December 1988); doi: 10.1117/12.948529
Show Author Affiliations
H. M Escamilla, CICESE (Mexico)
E. R. Mendez, CICESE (Mexico)
M. Sanchez-Abundis, CICESE (Mexico)

Published in SPIE Proceedings Vol. 0976:
Statistical Optics
G. Michael Morris, Editor(s)

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