The Effect of Spectral Power Distribution of White Light-Emitting Diodes on Eye Fatigue

This study investigates the effect of blue light emitted by phosphor-converted white light-emitting diodes (LEDs) on people’s eye fatigue. We conducted an experiment in which participants performed a visual task under lighting conditions using LED (B-LED) excites phosphors and LEDs (V-LEDs) violet two types phosphors. One V-LEDs had spectral power distribution mimicking those sun (S-LED). During experiment, we measured participants’ subjective fatigue, number blinks, accommodation critical flicker frequency. The results evaluation suggested that fatigue B-LED was worse than S-LED or V-LED lighting. eyeblink measurements In range employed our found with blue-light-excited could be violet-light-excited LED. objective response muscles is principal factor causing