High pressure sodium lamp

Details High pressure sodium lamp High pressure sodium lamp

1987-08-05

1989-01-24

Moore, David K.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313565, 313573, 313634, 313642, H01J 6120, H01J 1722

Patent

active

048003212

ABSTRACT:
A high pressure sodium lamp includes an arc tube having an inner diameter greater than 12 mm. An amalgam including a prescribed quantity of sodium and mercury is sealed in the arc tube. To achieve the maximum lamp efficiency in different values of the inner diameter of the arc tube, the lamp should satisfy the following relationships:

REFERENCES:
patent: 3398312 (1968-08-01), Edris et al.
patent: 3575630 (1971-04-01), Edris
patent: 3898504 (1975-08-01), Akutsu et al.
patent: 3974410 (1976-08-01), Collins et al.
patent: 3979624 (1976-09-01), Liu et al.
patent: 4342939 (1982-08-01), Mcvey
patent: 4581557 (1986-04-01), Johnson
patent: 4639639 (1987-01-01), Hirayama et al.

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