FIELD: physics, optics.
SUBSTANCE: invention relates to passive optical location. The proposed method comprises forming an actual optical image of space with the help of adjustable-diaphragm lens on the surface of matrix photo recorder of optical radiation. Note here that a small-size screen, its diametre not exceeding that of the lens diaphragm, is placed ahead of optical path lens when the upper limit of photo recorder sensitivity range is oversized on irradiating it with light.
EFFECT: reliable observation of space against background of bright distant light source, detection of object in recorded image in halo of distant light source.
7 cl, 11 dwg
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