Metal halide lamp with ceramic discharge vessel and magnesium in

Details Metal halide lamp with ceramic discharge vessel and magnesium in Metal halide lamp with ceramic discharge vessel and magnesium in

1995-04-06

1997-12-16

Patel, Ashok

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313638, 313639, 313640, H01J 6130, H01J 6182

Patent

active

056989482

ABSTRACT:
A metal halide lamp includes a discharge vessel with a ceramic wall and a filling which comprises besides mercury and a halogen also Na, Tl and one or several of the elements from the group formed by Sc, Y and lanthanides. The filling also contains Mg to improve lumen maintenance.

REFERENCES:
patent: 3248590 (1966-04-01), Schmidt
patent: 3317778 (1967-05-01), Timmersman et al.
patent: 3558963 (1971-01-01), Henneman
patent: 3761758 (1973-09-01), Bamberg et al.
patent: 3840767 (1974-10-01), Lake
patent: 3867665 (1975-02-01), Furmidge et al.
patent: 3898504 (1975-08-01), Akutsu et al
patent: 4769576 (1988-09-01), Ohyama et al.
patent: 5394059 (1995-02-01), Ohyama et al.
patent: 5451838 (1995-09-01), Kawai

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