Arc discharge lamp comprising mercury, scandium and lithium iodi

Details Arc discharge lamp comprising mercury, scandium and lithium iodi Arc discharge lamp comprising mercury, scandium and lithium iodi

1974-12-09

1977-10-11

Segal, Robert

Electric lamp and discharge devices

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

For plural electrodes of discharge device

313225, H01J 1720, H01J 6118

Patent

active

040538052

ABSTRACT:
A metal halide arc discharge lamp has a fill including lithium iodide, mercury and scandium. In order to maintain a high efficiency in the red emission of the lamp, the ratio of lithium iodide to scandium must be between about 1.67 and 83.3.

REFERENCES:
patent: 2615140 (1952-10-01), Claessen
patent: 3351798 (1967-11-01), Bauer
patent: 3398312 (1968-08-01), Edris et al.
patent: 3407327 (1968-10-01), Koury et al.
patent: 3911308 (1975-10-01), Akutsu et al.

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