High-pressure sodium lamp

Details High-pressure sodium lamp High-pressure sodium lamp

1981-12-31

1984-08-28

Demeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having a particular total or partial pressure

313634, 313636, 313638, H01J 6122, H01J 6133

Patent

active

044685904

ABSTRACT:
A high-pressure sodium lamp in which the inner diameter of an arc envelope is largest at the midpoint between the ends thereof and the inner and outer diameters thereof in the vicinity of the ends at which are air-tightly fitted electrodes and their associated parts are reduced gradually relative to the inner diameter of the midpoint thereof. When the arc envelope is turned on, the following conditions are satisfied:

REFERENCES:
patent: 4035691 (1977-07-01), Altman et al.

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