Important criteria for call centers are VDU-equipped workstations distanced from window areas, arranged in groups with varied geometrical formations. Shiftwork is typical, whereby the day time illumination should (according to natural lighting conditions) be heightened and the night-time illumination reduced.
The following requirements for lighting concepts are therefore created: the illuminace must be sufficient and glare-free; an excess of luminance in the field of vision and too much reflection on VDU surfaces must be avoided. All-round glare-restricted direct luminaires or appropriate direct/indirect luminaires are suitable, for example floorstanding uplights or combinations with desktop luminaires. These should be switchable and dimmable in order to allow for their adjustment by employees according to their individual viewing needs or for adapting them to day and night-time.
Light management systems are ideal for these purposes, offering further possibilities such as a chronologically dynamic, a daylight dependant or a presence dependant lighting control. An interesting alternative for the elementary illumination of the space is the use of indirect projected systems. The application of metal halide lamps provide a daylight-similar lighting ambience.