Radiant energy – Infrared-to-visible imaging – Including means for scanning field of view
Patent
1985-03-05
1987-12-15
LaRoche, Eugene R.
Radiant energy
Infrared-to-visible imaging
Including means for scanning field of view
250342, 250353, 356 5, G02B 2610
Patent
active
047135441
ABSTRACT:
An optical receiving system for thermal radiation is useable, with slight modification, for the simultaneous, low-loss reception of laser radiation and is nevertheless still composed of standard, common modules. To this end, a geometrical out-coupling of the laser radiation out of the shared receiving channel following a scanner and the geometrical separation of the thermal and laser radiations is provided, whereby the out-coupled laser radiation, separated from the thermal radiation, is directed via a simple optical assembly onto a preferably shared sensor. For the utilization of the common reception channel and, thus, of the reception optics as well for the emission of the laser radiation, the transmission radiation can be coupled into the separated laser reception channel via a polarization separating filter. By so doing, the transmission optics is eliminated, whereby good optical conditions for the transmission radiation are established without deterioration of the common reception channel.
REFERENCES:
patent: 3912927 (1975-10-01), Hoffman
patent: 4575632 (1986-03-01), Lange
patent: 4618768 (1986-10-01), Weigel
LaRoche Eugene R.
Lee James C.
Siemens Aktiengesellschaft
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