Figures & data
Fig. 1 A simulation was performed with MATLAB to compute 30 million SPDs from linear combinations of five LED channels (red, green, blue, warm white, cool white). SPDs within ±0.01 Duv and ±10 K of six practical CCTs were retained. For the retained SPDs, circadian stimulus (CS) [Rea and others Citation2010] was calculated. The maximum achieved CS is shown for each CCT. Though the maximum CS value increases with CCT, the possible CS values in each CCT bin have a range of zero to each CCT’s maximum. Adapted from Esposito and Houser [Citation2016].
![Fig. 1 A simulation was performed with MATLAB to compute 30 million SPDs from linear combinations of five LED channels (red, green, blue, warm white, cool white). SPDs within ±0.01 Duv and ±10 K of six practical CCTs were retained. For the retained SPDs, circadian stimulus (CS) [Rea and others Citation2010] was calculated. The maximum achieved CS is shown for each CCT. Though the maximum CS value increases with CCT, the possible CS values in each CCT bin have a range of zero to each CCT’s maximum. Adapted from Esposito and Houser [Citation2016].](/cms/asset/b219b30f-145a-4f6c-b2c7-8159e28802e8/ulks_a_1247566_f0001_b.gif)