Ultra Violet light emitting lamps coated with fluorescent material are used for many skin treatment applications e.g. tanning- and photo-therapies. The phosphors possessing emission in the range 200 nm - 400 nm plays very important role so far as phototherapy applications and hence many such devices such as Fluorescent Lamps for Medical use, Black-light Fluorescent Lamps, Medical and scientific UV Lamps. These medical lamp applications are used in the market already since many decades and have been shown to be crucial as a substantial group of patients need the typical spectrum of the light...