Method of manufacturing metal halide lamp

Details Method of manufacturing metal halide lamp Method of manufacturing metal halide lamp

1985-09-03

1987-02-17

Godici, Nicholas F.

Electric lamp or space discharge component or device manufacturi

Process

With start up, flashing or aging

445 9, 445 16, 445 54, H01J 900, H01J 938

Patent

active

046436901

ABSTRACT:
A metal halide lamp provides exceptional color rendition because of a high calcium iodide partial pressure. A long-arc ellipsoidal arc tube provides a high "cold spot" temperature.
The method of manufacture of the lamp includes heating the arc tube tubulation while burning the lamp after dosing, and then an evacuation step to eliminate moisture due to the hygroscopic calcium iodide.

REFERENCES:
patent: 3682525 (1972-08-01), Knochel et al.
patent: 3901573 (1975-08-01), DoLenga et al.
patent: 3967871 (1976-07-01), Kerekes
patent: 4231627 (1980-11-01), Schaffernicht et al.

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