Inrad, Inc.

Shai Livneh

Warren Ruderman

Ilya Zwieback

Sergey Selin

Single crystals of (NH ) Ni(SO ) .6H O represent an excellent material for filtering UV light and in an enclosed system will not deteriorate at temperatures as high as 125&deg; C. They are particularly useful in solar-blind optical systems and sensing devices, which seek to identify the presence of UV light sources in the UV missile warning band.

Ammonium nickel sulfate crystals

A crystal having good optical transmission between 260 nm and 280 nm and strongly absorbing at 285 nm and higher, which is nonhydroscopic and stable at temperatures to 250&deg; C. An example of such a crystal is Cerium doped YLiF . These properties make YLiF crystals doped with Ce excellent materials for use as UV filters in the missile early warning spectral band. Optical devices including missile detection systems are also provided.

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Fair Lawn, NJ, United States of America

Shai Livneh