Evaluation of Spectral Light Simulation Tools For Prediction of ipRGC-influenced Light Responses in Field Conditions

Spectral light simulation tools can be used to optimize lighting design in built environments for occupants’ ipRGC-influenced light (IIL) responses. The accuracy of these tools has been previously tested against measurements in controlled, neutral-colored spaces. This study aims to evaluate the accuracy of ALFA and Lark spectral light simulation tools in spectrally and geometrically complex environments. The methods consist of comparison of spectral irradiance, three IIL response metrics, and photopic illuminance in two office rooms in a university building. Measurements and simulations are performed in daylight, electric light, and combination of daylight and electric light. The dataset presented here documents this research.