The minimum lux paradox

Abstract

Abstract Through our work with urban masterplans, studying lit places and spaces in Norway for more than 20 years, and observing procedures of procurement and installations, we see some clear trends. There is a general tendency to light with the scope of augmenting visibility. Meaning that most effort is geared towards making spaces more visible with light, rather than creating good lighting environments. Lighting standards that set minimum lux level requirements should be a subject for thorough debate. They result in a never-ending increase in lighting installations and light levels. As lighting designers, we feel responsibility for the impact our work has on nature and society. Today we know that artificial light at night has both advantages and disadvantages to humans, in addition to negative impact on ecology and use of resources (3-11). Through a series of examples from the authors practice we will show how our studio is approaching sustainable lighting design. Working with lighting strategies, the focus is to give our clients tools to reduce light levels and maintain the best visual presentation. For this purpose, light distribution needs to be thoroughly planned and tested. When installations are completed, strategies to evaluate results, and discover possibilities to reduce more must be implemented.