Abstract

We discuss radiating structures in an infrared mirror optical system exposed to external thermal and mechanical effects and affected by significant deformations that affect the directional patterns of such sources. Deformations distort the radiant surfaces into a complex 3D shape that turns out to be difficult to describe in closed form. We have developed a discrete mathematical model for the radiant structure; this model can be used to study the structural impact of external effects on the infrared source and on the radiation characteristics of the source. Matrix analysis and analytical geometry enabled us to determine the spatial orientation of elementary areas of the deformed radiating surface and to then use physical optics to determine the contribution of each elementary area to the radiation emitted, taking into account the vector nature of the electromagnetic field.

© 2017 Optical Society of America

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