Light affects many aspects of human physiology, through the non-image-forming (NIF)
pathway. To account for this pathway, lighting design simulation tools need to combine …

Beyond vision, light influences human circadian rhythms and buildings' energy
consumption. Design solutions are needed to satisfy visual and circadian requirements …

When considering non-image-forming (NIF) light effects on people, knowing the light
vertically at eye-level is necessary. However, people are dynamic in their behavior and …

The goal of this study was to evaluate the use of new spectral simulation tool, Adaptive
Lighting for Alertness (ALFA), by comparing software-predicted values of spectral irradiance …

A DOE-funded study of the potential electrical and thermal energy impacts of using daylight
and electric light to meet existing recommendations for human health and well-being …

Our growing understanding about the impact of light on health has recently been transferred
to building certification programs, with some including recommendations for indoor light …

A growing body of research suggests that the built environment affects the circadian rhythms
of building occupants inhabiting indoor spaces. This stems from the fact that the average …

tral characteristics of light sources and room surfaces. Today, these characteristics need to
be accounted for as they influence the calculation of non-visual lighting metrics like …