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Proceedings Paper

Imaging quality of Fourier-transforming diffractive lens
Author(s): Marek Zajac; Jerzy Nowak
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Paper Abstract

A single holographic lens recorded with spherical waves can be used as a satisfactory Fourier transforming lens. By proper choice of the input pupil location where the object transparency illuminated with parallel light beam is placed a Fourier spectrum of this object free from spherical aberration and astigmatism can be obtained. The influence of the remaining coma is negligible if the relative aperture is not too high. It is also possible to diminish coma by recording the holographic lens on a spherical surface. However, full coma correction is not desirable, because compensation of distortion is then impossible. The uncompensated distortion leads to the deformation of the Fourier transform scale, but this fault is easy to correct by simple re-scaling at the recording step or subsequent image processing.

Paper Details

Date Published: 15 April 1993
PDF: 8 pages
Proc. SPIE 1780, Lens and Optical Systems Design, (15 April 1993); doi: 10.1117/12.142835
Show Author Affiliations
Marek Zajac, Technical Univ. of Wroclaw (Poland)
Jerzy Nowak, Technical Univ. of Wroclaw (Poland)


Published in SPIE Proceedings Vol. 1780:
Lens and Optical Systems Design

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