Print Email Facebook Twitter Desktop lighting for comfortable use of a computer screen Title Desktop lighting for comfortable use of a computer screen Author Han, L. (Tianjin University) Zhang, Hechen (Tianjin University) Xiang, Zhongxia (Tianjin University) Shang, J. (Tianjin University) Anjani, S. (TU Delft Applied Ergonomics and Design) Song, Y. (TU Delft Mechatronic Design) Vink, P. (TU Delft Materials and Manufacturing) Date 2021 Abstract BACKGROUND: The contrast between a bright computer screen and a dark ambient environment may influence comfort of the users, especially on their eyes. OBJECTIVE: The objective of this research is to identify the optimal desktop lighting for the comfortable use of the computer screen in a dark environment. METHODS: An experiment was designed where seven illumination setups were introduced for the users to perform their leisure tasks on a computer screen. Fifteen healthy subjects participated in the experiments. During each session, durations of the eye blinks, fixations and saccades of the user were recorded by an eye tracker. His/her neck and trunk movements were recorded by a motion tracking system as well. The comfort/discomfort questionnaire, localized postural discomfort questionnaire, NASA task load index and computer user questionnaire were used to record the overall comfort/discomfort, the local perceived physical discomfort, the cognitive workload, and general/eye health problems, respectively. RESULTS: Subjective and objective measurement results indicated that users felt more comfortable with high intensity warm lights using a computer screen. We also identified that the eye fixation durations, as well as the scores of two questions in the computer user questionnaire, have significant negative correlations with comfort. On the other side, the durations of blinks and the scores of three questions in the computer user questionnaire, were significantly correlated with discomfort. CONCLUSION: The warm (3000K) and high intensity (1500 lux) light reduced the visual and cognitive fatigue of the user and therefore improve the comfort of the user during the use of a computer screen. Subject designeye trackingLight To reference this document use: http://resolver.tudelft.nl/uuid:50fdafc5-f54b-4f53-a423-713cd10438ef DOI https://doi.org/10.3233/WOR-208018 ISSN 1051-9815 Source Work: a journal of prevention, assessment & rehabilitation, 68 (s1), S209-S221 Part of collection Institutional Repository Document type journal article Rights © 2021 L. Han, Hechen Zhang, Zhongxia Xiang, J. Shang, S. Anjani, Y. Song, P. Vink Files PDF wor_2021_68_s1_wor_68_s1_ ... 208018.pdf 1.05 MB Close viewer /islandora/object/uuid:50fdafc5-f54b-4f53-a423-713cd10438ef/datastream/OBJ/view