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Proceedings Paper

Bimorph mirrors for adaptive optics in space telescopes
Author(s): D. Alaluf; R. Bastaits; K. Wang; M. Horodinca; I. Burda; G. Martic; A. Preumont
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Paper Abstract

This paper discusses a concept of bimorph deformable mirror used in adaptive optics to compensate for manufacturing errors, gravity release and thermal distortion affecting large lightweight mirrors in space telescopes. The mirror consists of a single-crystal Silicon wafer (D=75 mm t=500μm) covered with an optical coating on the front side and an array of 25 independent PZT actuators acting in d31 mode on the back side. The mirror is mounted on an isostatic support with three linear PZT actuators controlling the rigid-body motion. The paper presents the experimental results obtained with this design and a new, more compact alternative.

Paper Details

Date Published: 27 July 2016
PDF: 11 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 990983 (27 July 2016); doi: 10.1117/12.2231702
Show Author Affiliations
D. Alaluf, Univ. Libre de Bruxelles (Belgium)
R. Bastaits, Univ. Libre de Bruxelles (Belgium)
K. Wang, Univ. Libre de Bruxelles (Belgium)
M. Horodinca, Technical Univ. Gheorghe Asachi (Romania)
I. Burda, Babes Bolyai Univ. (Romania)
G. Martic, Belgian Ceramic Research Ctr. (Belgium)
A. Preumont, Univ. Libre de Bruxelles (Belgium)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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