Metal halide lamp with improved lumen output

Details Metal halide lamp with improved lumen output Metal halide lamp with improved lumen output

1988-05-17

1989-09-12

Yusko, Donald J.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313640, H01J 6120

Patent

active

048663425

ABSTRACT:
The luminous efficacy of a metal halide lamp containing sodium iodide and scandium iodide is increased, while color rendering index is maintained or improved by the addition of critical amounts of thallium iodide.

REFERENCES:
patent: 3521110 (1970-07-01), Johnson
patent: 3959682 (1976-05-01), Wesselink et al.
patent: 3983440 (1976-09-01), Scott et al.
patent: 4232243 (1980-11-01), Rigden
patent: 4594529 (1986-06-01), de Vrijer

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