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Development of a Large-Aperture PLZT Shutter with Enhanced Operational/Environmental Capabilities

PLZT thermal/flash protective shutters ranging in size from 25mm to 101mm in diameter have been developed by Sandia National Laboratories for industrial and military applications. A larger diameter shutter, 147mm, with enhanced environmental and operational capabilities was required for window ports. This paper describes a production PLZT shutter which provides these characteristics via the incorporation of new lens sealing techniques, packaging design, polarizers, and electronic subsystems.