Spectral distribution cool white fluorescence

Figure 6-3 Spectral Energy Distribution of Sunlight (S), CIE IUuminant (A), Cool White Fluorescent Lamp (B), and Sodium Light (N)...

Figure 2.3. Spectral power distribution of cool white fluorescent lamp (IES, 1981 Billmeyer and Saltzman, 1981).

Option 2 is defined as, "A cool-white fluorescent lamp as defined in ISO 10977 (1993)" and "A near ultraviolet fluorescent lamp having a spectral power distribution from 320 to 400 nm with a maximum transmission energy emission between 350 and 370 nm a significant proportion of UV should be in both bands of 320 to 360 nm and 360 to 400 nm."... 

It should also be noted that the spectral power distribution for the "cool white" lamp given in ISO 10977 1993(E) is not that of "cool white" fluorescent lamp but that of a the visible "cool white" spectrum to which the mercury lines have been added (30). This lamp also has a CCT of approximately 4100 K. There is one known notable exception to this last statement and that is Luzchem Research Inc. (33), which does supply a spectrum for each lamp that they sell if it is to be used for ICH photostability testing. 

Figure 5 shows the effect of the dopant cerium on the spectral power distribution (SPD) of a typical cool-white fluorescent lamp. This dopant has been useful in reducing UV emissions from the emissions of household quartz, halogen, and other lamps, particularly the desktop variety. 

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