Mode Of Image Formation Of Averaged Speckled Images

H. M Escamilla; E. R. Mendez; M. Sanchez-Abundis

doi:10.1117/12.948529

2 December 1988 Mode Of Image Formation Of Averaged Speckled Images

H. M Escamilla, E. R. Mendez, M. Sanchez-Abundis

Proceedings Volume 0976, Statistical Optics; (1988) https://doi.org/10.1117/12.948529
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

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.

Citation Download Citation

H. M Escamilla, E. R. Mendez, and M. Sanchez-Abundis "Mode Of Image Formation Of Averaged Speckled Images", Proc. SPIE 0976, Statistical Optics, (2 December 1988); https://doi.org/10.1117/12.948529

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