Optic-electronic autocollimation system for measuring line and angular deformation

Dinh Duan Dang; Igor A. Konyakhin

doi:10.1117/12.2592734

20 June 2021 Optic-electronic autocollimation system for measuring line and angular deformation

Dinh Duan Dang, Igor A. Konyakhin

Proceedings Volume 11782, Optical Measurement Systems for Industrial Inspection XII; 1178225 (2021) https://doi.org/10.1117/12.2592734
Event: SPIE Optical Metrology, 2021, Online Only

Conference Poster

Abstract

The improved autocollimator for measuring angular and shift deformations of the large constructions as mirrors of the rotatable radiotelescopes are analyzed. Two types of the measuring scheme for autocollimator are researched. The first type of the autocollimator scheme uses three cube-corner reflectors which are set in 3 points of the counter reflector of the radiotelescope. This type of the autocollimator measures the angular and line shifts in a large range. The counter reflector is set on the SEMS moving platform and the range of its line and angular shifts is 3 arc degree and 100 mm respectively. The second type of autocollimator scheme uses a tetrahedral reflector. This autocollimator is used for the measuring pitch and yaw angular deviations and line shifts of the section boards of the main mirror of the radiotelescope. The range of section board line and angular shifts is 30 arc minutes and 10 mm respectively. The changing one measuring scheme to another is made by switching the radiation marks of the autocollimator. The technical characteristics of the suggested autocollimator and algorithms of measuring line and angular shifts are discussed.

Citation Download Citation

Dinh Duan Dang and Igor A. Konyakhin "Optic-electronic autocollimation system for measuring line and angular deformation", Proc. SPIE 11782, Optical Measurement Systems for Industrial Inspection XII, 1178225 (20 June 2021); https://doi.org/10.1117/12.2592734

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