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Large lightweight segmented mirrors for adaptive optics

2008; SPIE; Volume: 7015; Linguagem: Inglês

10.1117/12.787810

1996-756X

Gonçalo Rodrigues, Renaud Bastaits, Stéphane Roose, Yvan Stockman, W. Gebhardt, Andreas Schoenecker, Pierre Villon, André Preumont,

Optical Coatings and Gratings

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.