TY - GEN
T1 - Piezoelectric microactuator technologies for wavefront correction in space
AU - Yang, Eui Hyeok
AU - Hishinuma, Yoshikazu
AU - Toda, Risaku
AU - Shcheglov, Kirill
PY - 2007
Y1 - 2007
N2 - There is a need for ever-larger apertures for use in space based optical imaging systems. Requirements on optical instrumentation for future observations in space will place rigorous demands on wavefront quality. The design of such mirrors involves a balance between the utilization of ultra-lightweight mirror and support structures, and the active correction of the increased deformations due to these compromises in structural rigidity. Performing wavefront control with a primary mirror requires precision and stability over a large structure. The wavefront correction, therefore, can be partitioned in spatial frequency between the primary mirror and a tertiary deformable mirror (DM). To realize the full potential of new ultra-lightweight, active primary mirror, the large-stroke microactuator and DM technologies need to be developed. This paper presents a set of candidate components: linear microactuator technology and a piezoelectric unimorph-based large-stroke DM technology, in the context of a lightweight active mirror concept.
AB - There is a need for ever-larger apertures for use in space based optical imaging systems. Requirements on optical instrumentation for future observations in space will place rigorous demands on wavefront quality. The design of such mirrors involves a balance between the utilization of ultra-lightweight mirror and support structures, and the active correction of the increased deformations due to these compromises in structural rigidity. Performing wavefront control with a primary mirror requires precision and stability over a large structure. The wavefront correction, therefore, can be partitioned in spatial frequency between the primary mirror and a tertiary deformable mirror (DM). To realize the full potential of new ultra-lightweight, active primary mirror, the large-stroke microactuator and DM technologies need to be developed. This paper presents a set of candidate components: linear microactuator technology and a piezoelectric unimorph-based large-stroke DM technology, in the context of a lightweight active mirror concept.
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U2 - 10.1117/12.721123
DO - 10.1117/12.721123
M3 - Conference contribution
AN - SCOPUS:35948932611
SN - 0819466786
SN - 9780819466785
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Micro (MEMS) and Nanotechnologies for Defense and Security
T2 - Micro (MEMS) and Nanotechnologies for Defense and Security
Y2 - 10 April 2007 through 12 April 2007
ER -