16 February 2007 Visual ergonomic aspects of glare on computer displays: glossy screens and angular dependence
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Recently flat panel computer displays and notebook computer are designed with a so called glare panel i.e. highly glossy screens, have emerged on the market. The shiny look of the display appeals to the costumers, also there are arguments that the contrast, colour saturation etc improves by using a glare panel. LCD displays suffer often from angular dependent picture quality. This has been even more pronounced by the introduction of Prism Light Guide plates into displays for notebook computers. The TCO label is the leading labelling system for computer displays. Currently about 50% of all computer displays on the market are certified according to the TCO requirements. The requirements are periodically updated to keep up with the technical development and the latest research in e.g. visual ergonomics. The gloss level of the screen and the angular dependence has recently been investigated by conducting user studies. A study of the effect of highly glossy screens compared to matt screens has been performed. The results show a slight advantage for the glossy screen when no disturbing reflexes are present, however the difference was not statistically significant. When disturbing reflexes are present the advantage is changed into a larger disadvantage and this difference is statistically significant. Another study of angular dependence has also been performed. The results indicates a linear relationship between the picture quality and the centre luminance of the screen.
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Kjell Brunnström, Kjell Brunnström, Börje Andrén, Börje Andrén, Zacharias Konstantinides, Zacharias Konstantinides, Lukas Nordström, Lukas Nordström, "Visual ergonomic aspects of glare on computer displays: glossy screens and angular dependence", Proc. SPIE 6492, Human Vision and Electronic Imaging XII, 64920H (16 February 2007); doi: 10.1117/12.699049; https://doi.org/10.1117/12.699049

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