Non-Conventional Tunable Spatial Filtering

P. Andres; A. Pons; J. Ojeda-Castaneda

doi:10.1117/12.967252

1 January 1987 Non-Conventional Tunable Spatial Filtering

P. Andres, A. Pons, J. Ojeda-Castaneda

Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967252
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada

Abstract

A virtual display of the Fraunhofer diffraction pattern of any object is formed in the transverse source plane by theyirtual diffracted rays extqn0ing in the region to the left of the screen containing the transparencyl),2). Except for a few cases '')"°), the concept of virtual Fourier transform appears not to have been made use of. The main idea of this paper is, bearing in mind the property referred to in the above paragraph, to describe a novel spatial filtering technique. In this way, one can obtain different filtered images, by simply moving the point source along the optical axis. The basic theory is described below.

Citation Download Citation

P. Andres, A. Pons, and J. Ojeda-Castaneda "Non-Conventional Tunable Spatial Filtering", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); https://doi.org/10.1117/12.967252

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