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Large lightweight segmented mirrors for adaptive optics

: Rodrigues, G.; Bastaits, R.; Roose, S.; Stockman, Y.; Gebhardt, S.; Schoenecker, A.; Villon, P.; Preumont, A.


Hubin, N. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Europe, Cardiff:
Adaptive optics systems : 23 - 28 June 2008, Marseille, France
Bellingham, WA: SPIE, 2008 (Proceedings of SPIE 7015)
ISBN: 978-0-8194-7225-0
Paper 70153U
Conference "Adaptive Optics Systems" <2008, Marseille>
Conference Paper
Fraunhofer IKTS ()

This paper examines the possibility of constructing deformable mirrors for adaptive optics with a large number of degrees of freedom, by assembling segmented silicon mirrors with bimorph piezoelectric actuation. The production process relies on silicon wafers and thick film PZT deposition technology; it is able to lead to an actuation pitch of the order of 5 mm, and the manufacturing costs appear to grow only slowly (linearly or less) with the number of degrees of freedom in the adaptive optics.