Fluorescent lamp producing white color illumination with multipl

Details Fluorescent lamp producing white color illumination with multipl Fluorescent lamp producing white color illumination with multipl

1986-12-22

1988-01-05

DeMeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

H01J 6144

Patent

active

047178574

ABSTRACT:
A fluorescent lamp utilizing a four component phosphor combination is provided producing efficient white color illumination at a lower cost than conventional phosphor coatings of the same type. A lamp color temperature of approximately 3500.degree. K. is produced with a blend containing two strontium apatite phosphors, one strontium orthophosphate phosphor and a calcium haloapatite phosphor. The strontium phosphors are blended in weight proportions to match the white color emission point of the calcium haloapatite phosphor component in said blend.

REFERENCES:
patent: 2488733 (1949-11-01), McKeag et al.
patent: 3109819 (1963-11-01), Gillooly et al.
patent: 3748517 (1973-07-01), Haft
patent: 4075532 (1978-02-01), Piper et al.
patent: 4079287 (1978-03-01), Soules et al.
patent: 4315192 (1982-02-01), Skwirut et al.

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