The invention relates to a target-detection and target-alignment device for a missile system whose field of view is expanded by a wide-angle lens system, which does not contain any optical components which must be additionally moved, and which is equipped with an integrated system for correction of homogeneity of the ambient conditions. Two radiometers or photometers are connected to two emission surfaces positioned on opposite sides of the image of the field of view to adjust the angle of the target detector to compensate for mismatch of the output signals of the emission surfaces.
A system includes a dome window and an optical system having a central optical path that passes through the dome window. The optical system includes a refractive optical element having an axis of symmetry which passes through the optical element and which is tilted relative to the central optical path at a location where the central optical path and the axis of symmetry intersect within the optical element.