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Proceedings Paper

Guidelines For Narcissus Reduction And Modeling
Author(s): David E.L. Freeman
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Paper Abstract

In a thermal imaging system each optical refracting surface can reflect internal radiation down onto the detector. Narcissus is the spurious signal generated by the composite effect of these reflections. A function is derived which represents the narcissus effect as an equivalent temperature differences in the scene. The function can be approximated by a simple model based on paraxial ray-tracing. The effectiveness of the model is demonstrated by four examples.

Paper Details

Date Published: 9 June 1988
PDF: 11 pages
Proc. SPIE 0892, Simulation and Modeling of Optical Systems, (9 June 1988); doi: 10.1117/12.944321
Show Author Affiliations
David E.L. Freeman, Kidger Optics Ltd (England)

Published in SPIE Proceedings Vol. 0892:
Simulation and Modeling of Optical Systems
Robert E. Fischer; Donald C. O'Shea, Editor(s)

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