11 May 2017 A system perspective on designing for field-dependent SNR in wide-angle point-source detection lenses
Author Affiliations +
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.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Craig Olson, S. Craig Olson, Andrew W. Sparks, Andrew W. Sparks, Robert A. Cline, Robert A. Cline, Timothy D. Goodman, Timothy D. Goodman, } "A system perspective on designing for field-dependent SNR in wide-angle point-source detection lenses", Proc. SPIE 10181, Advanced Optics for Defense Applications: UV through LWIR II, 101810G (11 May 2017); doi: 10.1117/12.2262684; https://doi.org/10.1117/12.2262684


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