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13 December 2020 Methods used for testing of large-size mirrors surface figure and on and off-axis surfaces optical parameters at the stage of figuring
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Abstract
JSC LZOS applies various mechanical and optical methods to test optics at all stages of figuring, from milling and grinding to polishing stage. Computer Generated Holograms (CGH) are successfully applied at the polishing stage for the following purposes: testing of large-size optical components, on- and off-axis surfaces; alignment with respect to interferometer; defining of an aspherical surface optical vertex position with respect to the geometrical center for optical systems alignment. All this allows manufacturing of large-size aspherical on- and off-axis astronomical and space mirrors with high accuracy.
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Aleksandr P. Semenov, Magomed A. Abdulkadyrov, Nikolay S. Dobrikov, Alexandr N. Ignatov, Vladimir E. Patrikeev, Vitaliy V. Pridnya, Andrey V. Polyanchikov, and Ruslan K. Nasyrov "Methods used for testing of large-size mirrors surface figure and on and off-axis surfaces optical parameters at the stage of figuring", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114513E (13 December 2020); https://doi.org/10.1117/12.2561082
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