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.