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Proceedings Paper

A system perspective on designing for field-dependent SNR in wide-angle point-source detection lenses
Author(s): S. Craig Olson; Andrew W. Sparks; Robert A. Cline; Timothy D. Goodman
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Paper Abstract

Lenses for staring-array point-source detection sensors must maintain good signal-to-noise ratio (SNR) over fields of view often exceeding 100 degrees. Such lenses typically have f-θ distortion to provide constant solid angle sampling in object space. While the relative illumination calculation is often used to describe flux transfer from a Lambertian extended object for imaging applications, maximizing SNR for point-source detection depends primarily on maximizing collected irradiance at the entrance pupil, the shape of which can vary dramatically over field. We illustrate this field-dependent SNR calculation with an example lens and outline the calculations needed to derive a simple aberration-based expression for the field dependence of point-source SNR.

Paper Details

Date Published: 11 May 2017
PDF: 9 pages
Proc. SPIE 10181, Advanced Optics for Defense Applications: UV through LWIR II, 101810G (11 May 2017); doi: 10.1117/12.2262684
Show Author Affiliations
S. Craig Olson, L-3 Sonoma EO (United States)
Andrew W. Sparks, L-3 Sonoma EO (United States)
Robert A. Cline, L-3 Sonoma EO (United States)
Timothy D. Goodman, L-3 Sonoma EO (United States)

Published in SPIE Proceedings Vol. 10181:
Advanced Optics for Defense Applications: UV through LWIR II
Jay N. Vizgaitis; Bjørn F. Andresen; Peter L. Marasco; Jasbinder S. Sanghera; Miguel P. Snyder, Editor(s)

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