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Effect of blue light from LCD on VDT work: Experiment using blue light reduction function LCD
Author(s) -
Yoshimura Kumiko,
Sakakibara Hisataka,
Ikeda Mitsuru,
Shibata Kazuhiro,
Tamamura Yoshinori
Publication year - 2020
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.863
Subject(s) - liquid crystal display , luminance , visibility , blue light , reduction (mathematics) , optics , computer science , materials science , computer vision , computer graphics (images) , optoelectronics , physics , mathematics , geometry
The aim of this study was to examine the impact of the blue light from the visual display terminal (VDT) on visual search tasks. We assessed the quantity of the blue light from medical imaging diagnoses (medical‐grade) liquid‐crystal display (LCD) and general (personal computer‐grade) LCD for the VDT work, both equipped with the blue light reduction function. Then, we measured the visibility of display by evaluating the correct answer rate and reaction time of visual search tasks. The quantity of the blue light was proportional to the luminance of the display. When the blue light reduction function was used during the VDT work, the blue light at the peak wavelength was reduced by about 56%. Though the luminance of the display reduced, the visibility of the display was not decreased. These findings suggest that the blue light reduction on the LCD could work efficiently in the VDT work, maintaining the visibility of the display.