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Table 1 Characteristics of ambient, task, and combined lightings

From: Ambient-task combined lighting to regulate autonomic and psychomotor arousal levels without compromising subjective comfort to lighting

  CCT, K Illuminance, lx* Irradiance mW/(m2nm) Melanopsin-stimulating spectral component
Irradiance mW/(m2nm) Relative content, %
Low-CCT ambient 4500 500 152 51 34
High-CCT ambient 12000 500 163 75 46
Task 5000 250 60 19 31
Low-low combined 4900 750 211 68 32
High-low combined 8250 750 223 93 42
  1. *Desk-top vertical illuminance.
  2. CCK = correlated color temperature.