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Table 1 Characteristics of each light condition

From: Effect of quantity and intensity of pulsed light on human non-visual physiological responses

Condition HS condition MM condition LL condition Incandescent
Light-emitting diode Blue light White light Blue light White light Blue light White light  
Condition High intensity
Short pulse width
Long pulse width Medium intensity
Medium pulse width
Medium pulse width Low intensity
Long pulse width
Short pulse width Incandescent
Irradiance (μW/cm2) 30 μW/cm2 14.75 μW/cm2 15 μW/cm2 14.75 μW/cm2 7.5 μW/cm2 14.75 μW/cm2 14.48 μW/cm2
Pulse width (μs) 50 μs 950 μs 100 μs 900 μs 200 μs 800 μs 1000 μs
Peak wavelength (nm) 467 nm 467 nm 467 nm
Photopic illuminance (lx) 24.00 44.00 12.23 44.00 6.00 44.00 16.00
Scotopic illuminance (lx) 351.00 53.00 176.00 53.00 88.00 53.00 20.00
Photon density (1012 photons/cm2/s) 72.12 44.35 36.06 44.35 18.03 44.35 49.72
Photon density (log photons/cm2/s) 13.86 13.65 13.56 13.65 13.26 13.65 13.70
Melanopsin-stimulating intensity (μW/cm2) 24.65 2.41 12.32 2.41 6.16 2.41 0.97
At retinal level products of melanopsin-stimulating irradiance and pulse width per 1 ms (μW/cm2) 1.23 2.29 1.23 2.17 1.23 1.93 0.97
Summation of products of blue and white pulsed light per 1 ms (μW/cm2)   3.52   3.40   3.16