Light ratios, satisfaction, user perception, and general health in (day)lit office landscapes

(Day)light in office buildings has already been proven to be a beneficial contributor to health. However, people’s perception of the physical light environment deviates significantly from objective measurements. Large differences between user’s perception and objective light parameters, such as illuminance level or daylight contribution, could lead to people interfering with the automated lighting system which then may not be able to deliver the intended employee’s health benefits. This study found deviations between objective and subjective measures. In addition, correlations between daylight/electric light ratios (DL/EL) and self-reported satisfaction with lighting or self-reported general health were found to be not always statistically significant throughout the duration of the experiment. Further research should focus on the differences between subjective and objective light parameters and potential mediators between office lighting and occupational health