Ceramic metal halide discharge lamp with NaI/CeI.sub.3 filling

Details Ceramic metal halide discharge lamp with NaI/CeI.sub.3 filling Ceramic metal halide discharge lamp with NaI/CeI.sub.3 filling

1997-12-02

1999-10-26

O'Shea, Sandra

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

313606, 313620, 313634, H01J 1700, H01J 6100

Patent

active

059734531

ABSTRACT:
Metal halide lamp with ceramic discharge vessel having electrodes with spacing EA, internal diameter Di, and EA/Di>5. Ionizable filling comprises NaI and CeI.sub.3, and a coldest spot temperature of 1100-1500 K is achieved.

REFERENCES:
patent: 3786297 (1974-01-01), Zollweg et al.
patent: 4972120 (1990-11-01), Witting

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