Fluorescent lamp using multi-layer phosphor coating

Details Fluorescent lamp using multi-layer phosphor coating Fluorescent lamp using multi-layer phosphor coating

1986-11-10

1988-06-14

Blum, Theodore M.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313486, H01J 162, H01J 6304

Patent

active

047514264

ABSTRACT:
A fluorescent lamp utilizing a dual layer phosphor coating is disclosed wherein the base layer utilizes a first phosphor mixture and the top phosphor layer in said coating comprises a blend of narrow bandwith emitting phosphors to improve the color rendering capability of these lamps.

REFERENCES:
patent: 3937988 (1976-02-01), De Clue et al.
patent: 4075532 (1978-02-01), Piper et al.
patent: 4088923 (1978-05-01), Manders
patent: 4423349 (1983-12-01), Nakajima et al.
patent: 4583026 (1986-04-01), Kajiwara et al.

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