FIELD: IR-red engineering; devices for watching moving objects.
SUBSTANCE: top part of optical elements in set of optical system's optical elements corresponds to farer sector of detection area. Lower part of optical elements corresponds to nearer sector of detection area. Intermediate optical elements, disposed between top and low parts of optical elements, correspond to adjacent sector of detection area. Optical centers of optical elements, which correspond to different detection areas in optical system, are grouped in such a way that their areas of sensitivity are capable of embracing the total detection area to exclude "dead areas' in the area. False warnings happening at object-animal can be excluded and high reliability of object-human detection is provided at any part of guided area.
EFFECT: reduced cost; improved manufacturability.
4 cl, 5 dwg
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