Athermalized embedding of actuators in cryogenic mirrors

Details Athermalized embedding of actuators in cryogenic mirrors Athermalized embedding of actuators in cryogenic mirrors

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7439e..26h&link_type=abstract

Astronomical and Space Optical Systems. Edited by Warren, Penny G.; Marshall, Cheryl J.; Tyson, Robert K.; Lloyd-Hart, Michael;

Astronomy and Astrophysics

Astronomy

Scientific paper

Embedding solid-state ceramic actuators in a bending style deformable mirror presents unique athermalization challenges when operated at cryogenic temperatures. Approaches to athermally embed actuators in a substrate are presented in this study. Each approach is rated according to established design criteria: unmatched displacement, range, compliance ratio, bondline stress, design, and manufacturability. We show the results of our design that allows a large thermal range of operation for the actuators.

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