Scandium halide and alkali metal halide discharge lamp

Details Scandium halide and alkali metal halide discharge lamp Scandium halide and alkali metal halide discharge lamp

1991-12-17

1993-07-06

Yusko, Donald J.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313637, 313564, 313567, 313490, 313638, 313640, 313641, H01J 1720

Patent

active

052257339

ABSTRACT:
A scandium halide and alkali metal halide discharge lamp has a chemical fill in the arc tube comprising an inert starting gas, mercury, alkali metal iodides, scandium iodide and platinum metal as an additive for reducing the tendency of the lamps to discolor during operation.

REFERENCES:
patent: 3983513 (1976-09-01), DeCaro
patent: 4053805 (1977-10-01), Schotz et al.
patent: 4247798 (1981-01-01), Howe et al.
patent: 4305017 (1981-12-01), De Ridder et al.
patent: 4559471 (1985-12-01), Kroontje
patent: 4709184 (1987-11-01), Keeffe et al.
patent: 4963790 (1990-10-01), White et al.
patent: 5057743 (1991-10-01), Krasko et al.

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