Fluorescent lamp with a mixed layer containing phosphor and meta

Details Fluorescent lamp with a mixed layer containing phosphor and meta Fluorescent lamp with a mixed layer containing phosphor and meta

1996-02-08

1999-02-09

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313486, 313487, 313635, H01J 6144

Patent

active

058699279

ABSTRACT:
A highly safe fluorescent lamp is disclosed, in a mixed layer having couplings of phosphors and a metal oxide such as yttrium oxide is formed on the inner surface of a glass bulb. The couplings of the mixed layer strongly couples the grains arranged in crosslinked state between the phosphor grains of the phosphor material. A first thin film of the metal oxide is formed between the glass bulb and the mixed layer. A second thin film of the same metal oxide is formed on the inner surface of the mixed layer nearer to the bulb center. The amount of mercury sealed in the glass bulb thus is reduced, thereby minimizing the mercury consumption which has so far been the problem against environmental protection.

REFERENCES:
patent: 4670688 (1987-06-01), Sigai et al.
patent: 5051653 (1991-09-01), DeBoer et al.
patent: 5087523 (1992-02-01), Sigai et al.
patent: 5604396 (1997-02-01), Watanabe et al.
patent: 5614783 (1997-03-01), Fujino

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