High pressure discharge lamp

Details High pressure discharge lamp High pressure discharge lamp

1997-11-21

1999-11-16

Patel, Nimeshkumar D.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313 25, 313546, 313551, 313562, 313563, 313634, H01J 1720, H01J 6112, H01J 102, H01J 724

Patent

active

059864052

ABSTRACT:
The high pressure discharge lamp has a discharge vessel (1) mounted in an outer envelope (4) in which an oxygen dispenser (30) is disposed. The oxygen dispenser (30) contains silver oxide and may be disposed at a location where it obtains a temperature of at least 340.degree. C. during operation of the lamp, at which temperature the oxide is decomposed and oxygen is released. The deposit of black coatings originating from hydrocarbon contaminations is thereby prevented.

REFERENCES:
patent: 4499396 (1985-02-01), Fohl et al.
patent: 4559471 (1985-12-01), Kroonjte
patent: 4918352 (1990-04-01), Hess et al.

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