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Lumens and photon flux density

  1. Aug 20, 2012 #1
    Is there a simple way of calculating photon flux density from the lumens produced by a fluorescent tube?
  2. jcsd
  3. Aug 20, 2012 #2


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    Not exactly. You need to know the spectrum (spectral power distribution, or SPD) of the fluorescent light, and the radiation pattern. The SPD should be available, and you could estimate the radiation pattern.
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