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Combined effect of an IR optical system’s design and process parameters on the background irradiation on the detector

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Abstract

This paper discusses how an IR optical system’s design and process parameters affect the background irradiance on an IR radiation detector. Nonsequential ray tracing is used to calculate the background irradiance on the photodetector. The method was used for multivariate analysis of a system in order to determine the parameter set that minimizes the level of external and internal background fluxes on the detector. The optical properties of the components of the objective and the design characteristics of the mounts, along with the temperature of the individual components of the system, served as optimization parameters. The optimum parameter sets are determined that minimize the background flux under various utilization conditions of the system.

© 2019 Optical Society of America

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