High pressure sodium iodide arc lamp with excess iodine

Details High pressure sodium iodide arc lamp with excess iodine High pressure sodium iodide arc lamp with excess iodine

1984-11-29

1986-08-12

Willis, Davis L.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313639, H01J 1720, H01J 6118

Patent

active

046058818

ABSTRACT:
Iodine in excess of sodium-iodide stoichiometry is used in the fill for a sodium iodide arc lamp which also includes sodium iodide and xenon buffer gas. The presence of free sodium near the arc tube walls is eliminated and efficacy is improved.

REFERENCES:
patent: 3234421 (1966-02-01), Reiling
patent: 3351798 (1967-11-01), Bauer
patent: 3398312 (1968-08-01), Edris et al.
patent: 3911308 (1975-10-01), Akutsu et al.
patent: 3979624 (1976-09-01), Lui et al.
patent: 4171498 (1979-10-01), Fromm et al.
U.S. Patent Application Ser. No. 454,225, of P. D. Johnson, Filed Dec. 29, 1982, which is basis for English patent application 2133925A published Aug. 1, 1984.

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