Lighting characteristics, legibility and visual comfort of displays

In future, as well as visual human-computer interfaces, acoustic interfaces will get more and more important. However, the visual channel will be the more important channel due to its capacity. Therefore, it is necessary not only to optimize the display with regard to performance and time, but also to acceptance and subjective workload. On the one hand the single character (luminance, geometry, shape, colour) and on the other hand the arrangement of characters (distance of characters, image distortions, structure of text) should be adapted to human psychophysiological abilities. Moreover, the influence of the environment (lighting) and time-dependent phenomena (flicker, jitter) should be taken into consideration. Good ergonomics should imply the use of all possibilities which the flexible new technology offers for workplaces, including sensory or muscularly handicapped people.