High-pressure discharge lamp

Details High-pressure discharge lamp High-pressure discharge lamp

1980-12-15

1983-04-19

Dixon, Harold A.

Electric lamp and discharge devices

Having heating means to control gas/vapor, gas or vapor...

Discharge device gettering

313559, H01J 1968

Patent

active

043807143

ABSTRACT:
An oxidation-sensitive element electrically connected in series with the discharge vessel of a high-pressure discharge lamp extinguishes the lamp when the element, upon fracture of the outer envelope of the lamp, is oxidized and prevents damage as a result of emission of UV radiation.
In a high-pressure discharge lamp according to the invention, the oxidation-sensitive element (7) consists of an electric insulator (20) on which two spaced conductors (21, 22) are provided which are interconnected electrically by a vapor-deposited layer (23) of an oxygen-gettering metallic, evaporating getter. Opposite to the insulator (20) is present a holder (8) from which the getter was previously evaporated on to the insulator.

REFERENCES:
patent: 4025812 (1977-03-01), McVey
patent: 4195251 (1980-03-01), Bamberg
patent: 4203049 (1980-05-01), Kuus

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