The 17Ds were nearly invisible to radar, and would leave only the faintest traces on the most powerful tight-focus IR detectors.

A methanol flame will be harder for an IR detector to "see" than a hydrocarbon flame.

Most IR detectors are designed to ignore constant background IR radiation, which is present in all environments.

"They got night vision cameras and IR detectors everywhere," MacArthur reported.

Original version providing missile warning with IR detectors.

For his applications of IR detectors to astronomy, Coblentz is regarded as the founder of astronomical infrared spectroscopy.

Sofradir was to bring these new generations of IR detectors to mature production levels.

Sofradir pioneered the development of second- and third-generation IR detectors.

It was one of the first to produce second-generation IR detectors.

Traditionally IR detectors have very narrow instantaneous fields of view to achieve good enough signal to target ratio.