Fluorescent lamp for use in aquaria

Details Fluorescent lamp for use in aquaria Fluorescent lamp for use in aquaria

1994-05-13

1996-07-23

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313487, 362 84, H01J 162, H01J 6148

Patent

active

055392768

ABSTRACT:
A fluorescent lamp produces light having color coordinates within an ellipse (A) about 22 standard deviation of color matching around the color coordinates (b)x=0.344 y=0.302. The luminescent layer of the lamp includes a mixture of: magnesium fluorogermanate activated by manganese as red emitter; calcium halophosphate as white emitter; and a blue emitter preferably strontium pyrophosphate activated by divalent tin. The layer may alternatively be a mixture of red emitting magnesium fluorogermanate and blue emitting barium titanium pyrophosphate. Other blue emitters are also described.

REFERENCES:
patent: 3676728 (1972-07-01), Schreurs
patent: 5028839 (1991-07-01), Abeywickrama et al.
patent: 5170095 (1992-12-01), Bardos et al.
patent: 5402036 (1995-03-01), Ito

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