Fluorescent lamps having improved lamp spectral output and maint

Details Fluorescent lamps having improved lamp spectral output and maint Fluorescent lamps having improved lamp spectral output and maint

1984-11-13

1986-12-30

Moore, David K.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313486, H01J 6135

Patent

active

046331336

ABSTRACT:
Lumen maintenance and spectral output of fluorescent lamps is improved by applying over the phosphor a vapor deposited film consisting of yttrium oxide and at least one activator. The vapor is generated by electron beam bombardment of the activated yttrium oxide target and the film is most efficacious when applied to a thickness of from about 0.2 microns to about 1.5 microns.

REFERENCES:
patent: 4459507 (1984-07-01), Flaherty

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