Phosphor coating method and resulting fluorescent lamp

Details Phosphor coating method and resulting fluorescent lamp Phosphor coating method and resulting fluorescent lamp

1977-09-28

1978-10-17

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313493, 427 67, C09K 1142, H01J 6146

Patent

active

041211324

ABSTRACT:
Especially for the fluorescent lamps which have an annular shaped envelope, the phosphor coating is adhered to the interior surface of the envelope by a melted and solidified mixture of boric anhydride and sodium borate. The weight ratios of total boric acid plus sodium borate to the phosphor, as present in the coating suspension, and the relative weight ratios of boric acid to sodium borate in the coating suspension are relatively critical for best performance.

REFERENCES:
patent: RE20909 (1938-11-01), Claude
patent: 2706691 (1955-04-01), Schaefer
patent: 3503780 (1970-03-01), Kamiya
patent: 3514276 (1970-05-01), Fujio et al.
patent: 3963639 (1976-06-01), Klein

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