AUTOCOLLIMATOR FOR MEASUREMENT OF FLAT ANGLES Russian patent published in 2009 - IPC G02B27/30 

FIELD: physics.

SUBSTANCE: invention is related to measurement devices characterised by optical measurement facilities, and may be used for solving wide range of technical tasks including measurement of flat angles, such as alignment of optoelectronic systems, assembly of large-size structures, remote measurement and remote transmission of angle values, etc. Autocollimator for measurement of flat angles includes illuminator, the following components located along beam direction - condenser, mark, beam splitter, lens, autocollimator mirror installed with the possibility of alignment by two angular coordinates, matrix photodetector and unit of information processing, at that mark and photodetector are installed in lens focal area, at that part of mark field is arranged in the form of slit raster, and part - in the form of line, and additional raster is installed in front of matrix photodetector part registering mark field image in the form of slit raster, close to it.

EFFECT: increased accuracy of measurements due to reduction of measuring track noises effect at simultaneous increase of measurement range and reduction of autocollimator dimensions.

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