Low wattage metal halide arc discharge lamp having optimum effic

Details Low wattage metal halide arc discharge lamp having optimum effic Low wattage metal halide arc discharge lamp having optimum effic

1980-03-24

1981-11-24

Nussbaum, Marvin L.

Electric lamp and discharge devices

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

For plural electrodes of discharge device

313217, 313220, 313225, 313227, H01J 6118

Patent

active

043026990

ABSTRACT:
A single ended metal halide arc discharge lamp contains mercury, sodium halide, scandium, scandium halide and a starting gas. The molar ratio of sodium halide to scandium halide is between about 5 to 8 in order to obtain optimum luminous efficacy.

REFERENCES:
patent: 3407327 (1968-10-01), Koury et al.
patent: 4053805 (1977-10-01), Scholz et al.
patent: 4247798 (1981-01-01), Howe et al.

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