Low-pressure mercury vapor discharge lamp

Details Low-pressure mercury vapor discharge lamp Low-pressure mercury vapor discharge lamp

1980-02-12

1982-06-15

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313493, H01J 6144

Patent

active

043353304

ABSTRACT:
Low-pressure mercury vapor discharge lamps provided with a luminescent layer and having a relatively high power consumption. Lamps are loaded by at least 500 W per m.sup.2 surface area of the luminescent layer. In some embodiments the lamps have a nominal length of 60 to 150 cm and consume a nominal power of 0.25 to 0.50 W per cm length of the discharge tube.

REFERENCES:
patent: 2425697 (1947-08-01), Hultgren
patent: 3778662 (1973-12-01), Johnson
patent: 3780329 (1973-12-01), Otsuka et al.
patent: 3780330 (1973-12-01), Otsuka et al.
"Short-Term Initial Lumen Depreciation in Fluorescent Lamps," by Vrenken et al., Illuminating Engineering, Jan. 1964, pp. 59-66.

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