Logarithmic phase filter to extend the depth of field of incoherent hybrid imaging systems

Sherif S. Sherif; Edward R. Dowski Jr.; W. Thomas Cathey Jr.

doi:10.1117/12.449345

13 November 2001 Logarithmic phase filter to extend the depth of field of incoherent hybrid imaging systems

Sherif S. Sherif, Edward R. Dowski Jr., W. Thomas Cathey Jr.

Proceedings Volume 4471, Algorithms and Systems for Optical Information Processing V; (2001) https://doi.org/10.1117/12.449345
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

We describe a logarithmic phase filter to extend the depth of field of incoherent optical hybrid imaging systems with a rectangular aperture. By introducing this filter at the system's exit pupil and digitally processing the detector's output, we were able to extend the depth of field by an order of magnitude more than the Hopkins defocus criterion.

Citation Download Citation

Sherif S. Sherif, Edward R. Dowski Jr., and W. Thomas Cathey Jr. "Logarithmic phase filter to extend the depth of field of incoherent hybrid imaging systems", Proc. SPIE 4471, Algorithms and Systems for Optical Information Processing V, (13 November 2001); https://doi.org/10.1117/12.449345

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