Testing and alignment of freeform-based multi-mirror telescopes

Xue-jun Zhang; Hai-xiang Hu; Dong-lin Xue; Ming Li

doi:10.1117/12.2189967

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3 September 2015 Testing and alignment of freeform-based multi-mirror telescopes

Xue-jun Zhang, Hai-xiang Hu, Dong-lin Xue, Ming Li

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Proceedings Volume 9578, Current Developments in Lens Design and Optical Engineering XVI; 95780B (2015) https://doi.org/10.1117/12.2189967
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Three Mirror Anastigmat (TMA) systems including both on-axis and off-axis configurations have been widely used in space applications. In some designs, to correct for high order aberrations and realize large FOV, freeform surfaces are used to provide more design freedoms. This trend brings challenges to optical manufacturing and testing community. Since testing is critical to make high accurate aspheres and freeform surfaces, the paper addressed Computer Generated Hologram (CGH) design and implement to measure large freeform mirrors. In particular, CGH assisted alignment procedure for TMA telescopes were discussed in detail.

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Xue-jun Zhang, Hai-xiang Hu, Dong-lin Xue, and Ming Li "Testing and alignment of freeform-based multi-mirror telescopes", Proc. SPIE 9578, Current Developments in Lens Design and Optical Engineering XVI, 95780B (3 September 2015); https://doi.org/10.1117/12.2189967

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