14 July 2008 Progress on the development of a zonal bimorph deformable mirror
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The Zonal Bimorph Deformable Mirror (ZBDM) is a new concept of adaptive mirror. It exploits the benefits normally associated with bimorph mirrors, namely simple rugged construction, low capacitance, and cost effectiveness, but in a significant departure from classical, edge supported bimorphs each element is supported from underneath. This results in a localised (zonal) response and enables the device to be scalable up to large aperture, multi-1000 element devices. Crucially, the combination of continuous support coupled with the use of flexi-circuit interconnect promotes the assembly of a high density 'tweeter' deformable mirror (DM) onto a lower density, high dynamic range 'woofer' DM to generate an integrated, dual-stage deformable mirror which can deliver both high resolution and high dynamic range simultaneously. Such a device has the potential to significantly simplify the design of astronomical adaptive optics (AO) systems. We present the progress made on the development of the ZBDM as part of a collaborative project funded by the newly formed UK Science and Technology Facilities Council.
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Mike S. Griffith, Mike S. Griffith, Leslie C. Laycock, Leslie C. Laycock, Nick Archer, Nick Archer, Richard Myers, Richard Myers, Peter Doel, Peter Doel, Rolf Birch, Rolf Birch, "Progress on the development of a zonal bimorph deformable mirror", Proc. SPIE 7015, Adaptive Optics Systems, 70153L (14 July 2008); doi: 10.1117/12.787892; https://doi.org/10.1117/12.787892

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