3.
    发明专利
    未知

    公开(公告)号:DE69818785T2

    公开(公告)日:2004-07-29

    申请号:DE69818785

    申请日:1998-12-03

    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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