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Proceedings Paper

Optical/digital aberration control in incoherent optical systems
Author(s): W. Thomas Cathey; Edward R. Dowski; Alan R. FitzGerrell
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Paper Abstract

We modify the optical transfer function of an incoherent imaging system such that it is nearly invariant to misfocus and contains no zero values. Digital filtering of the resulting image restores the image to near diffraction limited spatial resolution. A system that is insensitive to misfocus is also insensitive to some lens aberrations. Consequently, the approach of combining optical and digital signal processing system extends the normal aberration balancing of lens design to include those aberrations that can be reduced by digital signal processing, such as spherical aberration.

Paper Details

Date Published: 5 February 1996
PDF: 7 pages
Proc. SPIE 2730, Second Iberoamerican Meeting on Optics, (5 February 1996); doi: 10.1117/12.231052
Show Author Affiliations
W. Thomas Cathey, Univ. of Colorado/Boulder (United States)
Edward R. Dowski, Univ. of Colorado/Boulder (United States)
Alan R. FitzGerrell, Univ. of Colorado/Boulder (United States)


Published in SPIE Proceedings Vol. 2730:
Second Iberoamerican Meeting on Optics
Daniel Malacara-Hernandez; Sofia E. Acosta-Ortiz; Ramon Rodriguez-Vera; Zacarias Malacara; Arquimedes A. Morales, Editor(s)

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