Fluorescent lamp with silicon dioxide coating

Details Fluorescent lamp with silicon dioxide coating Fluorescent lamp with silicon dioxide coating

1980-02-25

1982-08-10

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313493, 427 67, H01J 6135, B05D 506

Patent

active

043440169

ABSTRACT:
An improved low pressure mercury vapor discharge lamp, particularly of the fluorescent type. The inner wall of the glass envelope is coated with a layer of SiO.sub.2 particles which, in turn, is coated with a phosphor layer. The SiO.sub.2 particles have a particle size of below about 100 nm. The SiO.sub.2 particle containing layer containing between 0.5 and 0.7 mg of SiO.sub.2 particles per square centimeter of glass envelope which is coated.

REFERENCES:
patent: 2686157 (1954-08-01), Jones
patent: 2838707 (1958-06-01), Schwing et al.
patent: 3205394 (1965-09-01), Ray
patent: 3547680 (1970-12-01), Bouchard et al.
patent: 4058639 (1977-11-01), Schreurs
patent: 4148935 (1979-04-01), Schreurs

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