Fluorescent lamp including fired non-luminescent material

Details Fluorescent lamp including fired non-luminescent material Fluorescent lamp including fired non-luminescent material

1995-01-31

1997-03-25

Horabik, Michael

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

427 67, H01J 162

Patent

active

056147830

ABSTRACT:
A fluorescent lamp includes either laminated layers including a non-fluorescent substance layer, and a phosphor layer, or a layer including a mixture of the non-fluorescent substance, and a phosphor, wherein the non-fluorescent substance is a rare earth oxide of either yttrium, gadolinium, or lanthanum. The rare earth oxide is fired to at least 1000.degree. C. thereby providing the lamp with a higher luminous flux maintaining ratio.

REFERENCES:
patent: 4069441 (1978-01-01), Wanmaker et al.
patent: 4396863 (1983-08-01), Ranby et al.
patent: 4952422 (1990-08-01), Pappalardo et al.
patent: 5126166 (1992-01-01), Dutta et al.
Data Sheet on High Pority Alumina by Malakoff Industries Inc., P.O. Box 27002, Richmond Va 23261.

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