Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1992-07-22
1994-03-22
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2502521, 250330, 3561245, G01D 1800
Patent
active
052967050
ABSTRACT:
An imaging system is provided with integrated measurement of wear in at least one of the system's optical elements working in the transmission mode, in a given spectral band. The system includes a combination of optical elements and an imaging detector on which there is projected the image of an observed scene by means of the optical elements which produces a video signal of the observed scene. An alarm is provided to signal the existence of an optical element having a degree of wear which exceeds a critical value.
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Bourgain Jean-Louis
Pepin Christian
"Thomson-CSF"
Hannaher Constantine
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