14 December 1992 Airborne FLIR optical window examples
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Complex electro-optical (E-O) systems may be integrally mounted within the airframe or housed in separate pods on aircraft. Sensor fields of view and integrated laser target designator/rangefinder beams commonly sweep over large solid angles. This is accomplished by gimbaled mounts that are normally line-of-sight stabilized. If the E-O system is gimbaled as a whole, simple flat windows suffice. Internally gimbaled systems require domes or multi- segmented (faceted) windows. In any event, windows form the environmental barrier to the outside world for the E-O system and often must accommodate spectra other than just infrared (FLIR) wavebands. Optical windows can easily be the single most expensive optical component of a system. This paper considers various window designs and discusses their unique properties and possible pitfalls. Besides optical properties--durability, thermal, electromagnetic shielding, and other environmental aspects are treated.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rudolf Hartmann, Rudolf Hartmann, "Airborne FLIR optical window examples", Proc. SPIE 1760, Window and Dome Technologies and Materials III, (14 December 1992); doi: 10.1117/12.130789; https://doi.org/10.1117/12.130789

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