Luminescent coating for low-pressure mercury vapour discharge la

Details Luminescent coating for low-pressure mercury vapour discharge la Luminescent coating for low-pressure mercury vapour discharge la

1974-09-25

1976-02-10

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

H01J 6144

Patent

active

039379981

ABSTRACT:
A low-pressure mercury vapour discharge lamp provided with a luminescent coating comprising three luminescent materials each emitting in a narrow spectral range. The first material has an emission band with a maximum between 430 and 490 nm; the second material has its emission in the range 520-565 nm; the third material emits in the range 590-630 nm. The second material is defined by one of the formulas:

REFERENCES:
patent: 3114067 (1963-12-01), Henderson
patent: 3748517 (1973-07-01), Haft
patent: 3858082 (1974-12-01), Thornton, Jr.

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