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Proceedings Paper

Optimizing an active extreme asphere based optical system
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Paper Abstract

Methods are presented that can be used to design and operate optical systems with actively controlled components. Optical systems based on extreme aspheres and freeform surfaces have been investigated. Existing three mirror anastigmat (TMA) designs have been re-optimized in order to achieve two spherical and one challenging (extreme asphere or freeform) mirror surface. We foresee a manufacturing method, where the mirror substrate is plasticised by cold hydro-forming and its surface shape can be controlled via actuators to remove residual errors. Based on singular value decomposition (SVD) and regularization of the sensitivity matrix, the degrees of freedom (DOF) of the active surface can be analysed. Phase diversity (PD) is used as a wavefront retrieval process, to measure the performance metric and determine the sensitivity matrix thus correlating the performance metric of the system and the DOF of the active component.

Paper Details

Date Published: 18 December 2012
PDF: 13 pages
Proc. SPIE 8550, Optical Systems Design 2012, 85501G (18 December 2012); doi: 10.1117/12.981338
Show Author Affiliations
Tibor Agócs, NOVA-ASTRON (Netherlands)
Ramon Navarro, NOVA-ASTRON (Netherlands)
Lars Venema, ASTRON (Netherlands)
Gabby Kroes, NOVA-ASTRON (Netherlands)

Published in SPIE Proceedings Vol. 8550:
Optical Systems Design 2012
Laurent Mazuray; Daniel G. Smith; Jean-Luc M. Tissot; Tina E. Kidger; Frank Wyrowski; Stuart David; Rolf Wartmann; Jeffrey M. Raynor; Andrew P. Wood; Pablo Benítez; Andreas Erdmann; Marta C. de la Fuente, Editor(s)

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