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Proceedings Paper

Foote's Law and its application to cameras
Author(s): Charles C. Kim
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Paper Abstract

In modeling and characterizing a focal plane array (FPA) with a uniform source, estimating the irradiance on the FPA is inevitable. Many have developed needed formulas for the estimate. Those formulas mostly focus on one pixel of the FPA on the optical axis, ignoring all the other pixels. I use Foote’s law here to derive the formulas for all the pixels in a simple configuration where the FPA is directly exposed to the uniform source. I extend the formulas for two more configurations: the FPA enclosed with a baffle and the FPA housed with a lens. My results are compared with some existing formulas. They show differences, yet reach an agreement with some approximations. My formulas are useful for modeling and trade study for cameras, especially for the cameras with wide field of view.

Paper Details

Date Published: 3 May 2016
PDF: 7 pages
Proc. SPIE 9820, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXVII, 98200J (3 May 2016); doi: 10.1117/12.2218096
Show Author Affiliations
Charles C. Kim, Northrop Grumman Mission Systems (United States)

Published in SPIE Proceedings Vol. 9820:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXVII
Gerald C. Holst; Keith A. Krapels, Editor(s)

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