Arc discharge lamp containing scandium and scandium halide

Details Arc discharge lamp containing scandium and scandium halide Arc discharge lamp containing scandium and scandium halide

1980-03-03

1982-01-12

Nussbaum, Marvin L.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313225, 313229, H01J 6118

Patent

active

043107745

ABSTRACT:
A metal halide arc discharge lamp comprises an arc tube having electrodes at its ends and containing a fill including mercury, a starting gas, elemental scandium and at least about 2.6.times.10.sup.-6 gram atoms of scandium halide and 3.0.times.10.sup.-5 gram atoms of sodium halide per centimeter of arc length.

REFERENCES:
patent: 3234421 (1966-02-01), Reiling
patent: 3351798 (1967-11-01), Bauer
patent: 3398312 (1968-08-01), Edris et al.
patent: 3407327 (1968-10-01), Koury et al.
patent: 3577029 (1971-05-01), Koury
patent: 3911308 (1975-10-01), Akutsu et al.
patent: 3979624 (1976-09-01), Liu et al.
patent: 4247798 (1981-01-01), Howe et al.

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