Low-pressure mercury discharge lamp having specific luminescent

Details Low-pressure mercury discharge lamp having specific luminescent Low-pressure mercury discharge lamp having specific luminescent

1997-08-21

1999-04-06

Patel, Vip

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313635, H01J 162

Patent

active

058923241

ABSTRACT:
A low-pressure mercury discharge lamp having emission maxima in three spectral regions, provided with a gastight, radiation-transmitting discharge vessel with a gas filling comprising mercury and rare gas. A luminescent layer comprises at least a first luminescent material with an emission maximum in the 590-630 nm region and a second luminescent material with an emission maximum in the 520-565 nm region. The first luminescent material contains a compound defined by the formula

REFERENCES:
patent: 3937998 (1976-02-01), Vertegen et al.
patent: 4176294 (1979-11-01), Thornton

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