Discharge lamp having a discharge vessel made with a ceramic clo

Details Discharge lamp having a discharge vessel made with a ceramic clo Discharge lamp having a discharge vessel made with a ceramic clo

1989-03-23

1990-09-25

Wieder, Kenneth

Electric lamp and discharge devices

With gas or vapor

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

313623, 313566, 313356, H01J 6136

Patent

active

049595881

ABSTRACT:
In a high-pressure gas discharge lamp, particularly a high-pressure sodium vapor lamp, comprising a tubular discharge vessel being made of a ceramic material and including electrodes and a filling and ceramic plug elements for closing the end regions of the discharge vessel, receiving a current lead-in connecting the electrode with an outer source of supply voltage, wherein at least one of the plug elements is built up with surface elements of different height levels and determining a cold chamber for receiving the metal additive, the distance between the surface of the metal additive and the current lead-in measured as length of the way determined on the surface elements is at least 4 mm.

REFERENCES:
patent: 3892993 (1975-07-01), Timmermans

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