Low-pressure mercury discharge lamp for tanning
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United States of America Patent
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-
Mar 27, 2001
Grant Date -
N/A
app pub date -
Dec 9, 1998
filing date -
Dec 19, 1997
priority date (Note) -
Expired
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Abstract
A lamp vessel is made from a material which absorbs short-wave UV radiation. In addition, the luminescent screen comprises cerium-activated lunthanum phosphate and a luminescent substance having an emission band whose maximum is situated in the wavelength range from 340 nm and whose half-value ranges between 35 nm and 80 nm. The emission spectrum of the lamp for wavelengths below 400 nm corresponds closely to the solar spectrum while the lamp also has a high erythema L light output.
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