11 September 1989 Polycrystalline MgA12O4 Spinel A Broad Band Optical Material For Offensive Environments
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Today's optical systems are sometimes exposed to environments in which traditional optical materials rapidly degrade. In contrast, polycrystalline MgA1204 Spinel, transparent from three hundred nanometers to five and a half microns, with a unique combination of optical and physical properties provides a superior alternative in respect to stability to solar radiation, rain and particle erosion, high temperatures, and humidity, and is resistant to attack in strong acid and alkali solutions. Comparative data prior to and following exposure to a variety of environments will be reported. In addition, current and projected size and shape capability will be reviewed.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. E. Green, K. E. Green, J. L. Hastert, J. L. Hastert, D. W. Roy, D. W. Roy, } "Polycrystalline MgA12O4 Spinel A Broad Band Optical Material For Offensive Environments", Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); doi: 10.1117/12.960757; https://doi.org/10.1117/12.960757


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