Optical: systems and elements – Having significant infrared or ultraviolet property
Patent
1996-09-30
1998-04-21
Henry, Jon W.
Optical: systems and elements
Having significant infrared or ultraviolet property
250372, 252588, G02B 102, G02B 522, F21V 906
Patent
active
057424284
ABSTRACT:
Crystals formed of a solid-solution of Ni(BF.sub.4).sub.2 6H.sub.2 O provide very good materials for filtering ultraviolet light and will not deteriorate in temperatures as high as 110.degree. C. They are particularly useful in sensing devices which seek to identify the presence of ultraviolet light in the UV missile warning band.
REFERENCES:
patent: 3624000 (1971-11-01), Throckmorton
patent: 5134518 (1992-07-01), Letter
"Low-temperature Optical Absorption of Nickel Fluosilicate Crystals" by M. H. L. Pryce, G. Agnetta, T. Carofano, M. B. Palma-Vittorelli and M. U. Palma, Phil. Mag., 10, 477-496 (1964).
"Derivatographic Studies on Dehydration of Salt Hydrates and Their Deuterium Oxide Analogues, II" by N. Ray Chaudhuri and G. K. Pathak, Thermochimica Acta, 12 (1975) 71-79.
Coffey David W.
Jackovitz John F.
Mazelsky Robert
Partlow William D.
Singh Narsingh B.
Henry Jon W.
Northrop Grumman Corporation
Sutcliff Walter G.
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