Our paper presents the main results of the research and development of an optical scheme of the autocollimator to controlthe deflector rotation angles. We have performed a literature review of existing schemes basic devices, the peculiarities oftheir work, the scope, the analysis of the advantages and disadvantages of existing devices. The main difficulty in thedevelopment of the optical scheme of the autocollimator in our study is the high requirement for the accuracy of thecalculation of the deflector rotation angles and the processing speed of the measurement data. We have sold this problemby reducing the size of the image of the autocollimation spot to a few micrometers and the normal distribution of energywithin the image in the entire range of angular fields of the device. We are presenting the original methods of aberrationcorrection of the autocollimator optical system due to the use of optical surfaces with special properties.
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