Monitor for large air space using IR or laser beam - has objectives on cylindrical or conical jacket for observing certain regions of elevation

摘要

The device is for monitoring a fairly large air space using IR or laser beam. The object is to detect the presence of aircraft or flying objects. The detection is by modulation and modulation caused by the ring shaped raster is transferred to a flat circular shaped disc. The disc reproduces the various beams from the different space angles via mirrors and prisms. The objectives for observing a certain elevation region is located on the jacket of a cylinder or cone. The image of the sectional space angles of a number of elevation regions are projected on the same ring shaped modulation raster. Each detector allocated to a partial space angle is mounted on a common flat base plate. The base plate supporting the detectors is pre-cooled.