EVALUTING MEAN ROOM SURFACE EXITANCE

摘要

Although today's lighting design practices are moving from merely considering visual performance to taking into account perception of brightness and the overall lit appearance of the space, the most widely used metric for evaluation remains one that focuses only on the former, horizontal illuminance [Duff et al 2016c]. Illuminance as a metric is a remnant of a time when visual performance was the primary criteria in the design of the lighting in spaces and tasks did not involve self-luminous screens often leading to high levels of illumination. Currently, aesthetics and visual interest play just as important a role in lighting design [Loe et al 1994). And with the rise of technology and the predominant use of the computer in the work environment, there no longer is a need for the same levels of illumination as were required in the past.