High-pressure discharge lamp with incandescing metal droplets

Details High-pressure discharge lamp with incandescing metal droplets High-pressure discharge lamp with incandescing metal droplets

1992-11-12

1995-01-17

Horabik, Michael

Electric lamp and discharge devices

With gas or vapor

Having a particular total or partial pressure

313607, 313637, 313638, 313641, H01J 6112, H01J 6182

Patent

active

053828739

ABSTRACT:
The high-pressure discharge lamp has a filling in a discharge vessel (1) which includes a rare gas and a metal compound (2) chosen from hafnium halides and zirconium halides. The halide evaporates and discomposes to form incandescent, condensed metal particles. The lamp may be electrodeless and may in addition contain a buffer gas as a component of its filling. Alternatively, the lamp may have internal electrodes (13) and contain mercury (12) as a buffer gas. The lamp has favorable light generating properties, in particular a good color rendering, and in addition may have a very high luminous efficacy.

REFERENCES:
patent: 3575630 (1971-04-01), Edris
patent: 3886391 (1975-05-01), Koury et al.
patent: 5138227 (1992-08-01), Heider et al.
W. Elenbaas, "High Pressure Mercury Vapour Lamps and their Applications", 1965, Cleaver-Hume Press Ltd. pp. 124-127.

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