Optical: systems and elements – Protection from moisture or foreign particle – Cap or cover
Patent
1997-08-29
1998-09-29
Nguyen, Thong
Optical: systems and elements
Protection from moisture or foreign particle
Cap or cover
359600, G03B 1104
Patent
active
058153160
ABSTRACT:
A protection system and technique for a set adjustable brightness control vel regardless of previous deactivation of system display component in a thermal weapon sight (TWS) when a lens cap is utilized for covering optics of the TWS.
REFERENCES:
patent: 4441799 (1984-04-01), Enomoto
patent: 5408359 (1995-04-01), Ferrett et al.
patent: 5525970 (1996-06-01), Friedman et al.
patent: 5661598 (1997-08-01), Tomioka
Condiff Lesley R.
Friedman Melvin H.
Bashore Alain L.
Holford John E.
Lee Milton W.
Nguyen Thong
The United States of America as represented by the Secretary of
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