Effects of Luminous Intensity and Color of LED Light on Ocular Movement Characteristics
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The aim of present study was to explore the effects of luminous intensity and color of LED light on the ocular movement characteristics experimentally. The experimental factors were the color of LED (red, green, blue, and white) and the luminous intensity of LED (low: about 3500 lx, high: about 17500 lx). The participants required to stand in front of the conveyer, to gaze at the center on the surface of the conveyor, and not to move during the measurement. The measured ocular movement parameters were: the blink duration, the blink frequency, PERCLOS70. As a result, the blink duration tended to increase under blue LED condition independent of luminous intensity. The blink frequency tended to increase under the high luminous intensity condition for blue LED. Because PERCLOS70 was low in all condition (less than 10%), these ocular movement characteristics was not caused as the result of low arousal level.
KeywordsOcular movement Blink duration Blink frequency Luminous intensity LED color