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Proceedings Paper

Non-Conventional Tunable Spatial Filtering
Author(s): P. Andres; A. Pons; J. Ojeda-Castaneda
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Paper 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.

Paper Details

Date Published: 1 January 1987
PDF: 2 pages
Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); doi: 10.1117/12.967252
Show Author Affiliations
P. Andres, Universidad de Valencia (Mexico)
A. Pons, Universidad de Valencia (Mexico)
J. Ojeda-Castaneda, INAOE (Mexico)


Published in SPIE Proceedings Vol. 0813:
Optics and the Information Age

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