
Proceedings Paper
Flexure mount for a MEMS deformable mirror for the Gemini Planet ImagerFormat | Member Price | Non-Member Price |
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Paper Abstract
Small deformable mirrors (DMs) produced using microelectromechanical systems (MEMS) techniques have been used
in thermally stable, bench-top laboratory environments. With advances in MEMS DM technology, a variety of field
applications are becoming more common, such as the Gemini Planet Imager’s (GPI) adaptive optics system.
Instruments at the Gemini Observatory operate in conditions where fluctuating ambient temperature, varying gravity
orientations and humidity and dust can have a significant effect on DM performance. As such, it is crucial that the
mechanical design of the MEMS DM mount be tailored to the environment. GPI’s approach has been to mount a 4096
actuator MEMS DM, developed by Boston Micromachines Corporation, using high performance optical mounting
techniques rather than a typical laboratory set-up. Flexures are incorporated into the DM mount to reduce deformations
on the optical surface due to thermal fluctuations. These flexures have also been sized to maintain alignment under
varying gravity vector orientations. This paper is a follow-up to a previous paper which presented the preliminary
design. The completed design of the opto-mechanical mounting scheme is discussed and results from finite element
analysis are presented, including predicting the stability of the mirror surface in varying gravity vectors and thermal
conditions.
Paper Details
Date Published: 13 September 2012
PDF: 12 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84500H (13 September 2012); doi: 10.1117/12.926842
Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)
PDF: 12 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84500H (13 September 2012); doi: 10.1117/12.926842
Show Author Affiliations
Alexis Hill, National Research Council Canada (Canada)
Steven Cornelissen, Boston Micromachines Corp. (United States)
Daren Dillon, Univ. of California, Santa Cruz (United States)
Steven Cornelissen, Boston Micromachines Corp. (United States)
Daren Dillon, Univ. of California, Santa Cruz (United States)
Charlie Lam, Boston Micromachines Corp. (United States)
Dave Palmer, Lawrence Livermore National Lab. (United States)
Les Saddlemyer, National Research Council Canada (Canada)
Dave Palmer, Lawrence Livermore National Lab. (United States)
Les Saddlemyer, National Research Council Canada (Canada)
Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)
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