Narcissus analysis of cooled IR optical system with multi-magnification in wide field of view

Jinsuk Hong; Youngsoo Kim

doi:10.1117/12.974549

24 October 2012 Narcissus analysis of cooled IR optical system with multi-magnification in wide field of view

Jinsuk Hong, Youngsoo Kim

Proceedings Volume 8541, Electro-Optical and Infrared Systems: Technology and Applications IX; 85411G (2012) https://doi.org/10.1117/12.974549
Event: SPIE Security + Defence, 2012, Edinburgh, United Kingdom

Abstract

The designed Infra-red optical system with multi-magnification shows non-uniform thermal distribution only in Wide FOV and suspected to be narcissus effect. To analyze the system’s artifacts more effectively, the optical system design was imported to analysis codes. Initial ray tracing was performed with a point source from the detector to identify main candidates of Narcissus effect by analyzing irradiance distribution and flux distribution. As a second step, a planer source was created at the detector and traced again. As a result, four major candidates were selected and the major contributor was identified among them. To confirm the result with experiment, replacement optical component was manufactured. We can confirm that the Narcissus effect was improved significantly by replacing the identified component.

Citation Download Citation

Jinsuk Hong and Youngsoo Kim "Narcissus analysis of cooled IR optical system with multi-magnification in wide field of view", Proc. SPIE 8541, Electro-Optical and Infrared Systems: Technology and Applications IX, 85411G (24 October 2012); https://doi.org/10.1117/12.974549

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