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Proceedings Paper

A scalable multi-chip architecture to realise large-format microshutter arrays for coded aperture applications
Author(s): Mark E. McNie; David O. King; Gilbert W. Smith; Steven M. Stone; Alan G. Brown; Neil T. Gordon; Christopher W. Slinger; Kevin Cannon; Stephen Riches; Stanley Rogers
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Paper Abstract

Coded aperture imaging has been used for astronomical applications for several years. Typical implementations used a fixed mask pattern and are designed to operate in the X-Ray or gamma ray bands. Recently applications have emerged in the visible and infra red bands for low cost lens-less imaging systems and system studies have shown that considerable advantages in image resolution may accrue from the use of multiple different images of the same scene - requiring a reconfigurable mask. Previously we reported on the realization of a 2x2cm single chip mask in the mid-IR based on polysilicon micro-opto-electro-mechanical systems (MOEMS) technology and its integration with ASIC drive electronics using conventional wire bonding. The MOEMS architecture employs interference effects to modulate incident light - achieved by tuning a large array of asymmetric Fabry-Perot optical cavities via an applied voltage and uses a hysteretic row/column scheme for addressing. In this paper we present the latest transmission results in the mid-IR band (3-5μm) and report on progress in developing a scalable architecture based on a tiled approach using multiple 2 x 2cm MOEMS chips with associated control ASICs integrated using flip chip technology. Initial work has focused on a 2 x 2 tiled array as a stepping stone towards an 8 x 8 array.

Paper Details

Date Published: 25 August 2009
PDF: 9 pages
Proc. SPIE 7468, Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems, 74680E (25 August 2009); doi: 10.1117/12.829105
Show Author Affiliations
Mark E. McNie, QinetiQ Ltd. (United Kingdom)
David O. King, QinetiQ Ltd. (United Kingdom)
Gilbert W. Smith, QinetiQ Ltd. (United Kingdom)
Steven M. Stone, QinetiQ Ltd. (United Kingdom)
Alan G. Brown, QinetiQ Ltd. (United Kingdom)
Neil T. Gordon, QinetiQ Ltd. (United Kingdom)
Christopher W. Slinger, QinetiQ Ltd. (United Kingdom)
Kevin Cannon, GE Aviation Systems (United Kingdom)
Stephen Riches, GE Aviation Systems (United Kingdom)
Stanley Rogers, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 7468:
Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems
David P. Casasent; Jean J. Dolne; Stanley Rogers; Thomas J. Karr; Victor L. Gamiz, Editor(s)

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