Harmonizing method for optoelectronic instruments - enables individual units to be plugged into instrument system

摘要

Automatic harmonising system is for several opto-electronic instruments operating in different wavebands. A test mark projector (7) operating in al the wavebands is fixed inside one of the instruments and a goniometer (3) is fixed inside one of the others. The goniometer produces electrical signals representing the deviation of a point target from its optical axis' (2). Optical element in the projector beam path (20) and the beam path (21) of an photodetector (6) use the signals from the goniometer to displace the projector test mark and the screen image so that the test point is imaged at the intersection of the goniometer axis (10) and the goniometer focal plane. The goniometer indicates zero deviation with its axis, which acts as a reference axis for all the other instruments.