Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Patent
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.
Akutsu Hidezoh
Ogata Yoshiro
DeMeo Palmer C.
Matsushita Electronics Corporation
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