Dynamic and energy efficient working lamp

The results for the complete dataset, including all three types of task lights, show that the data generally is not normally distributed but skewed towards the positive side of the rating scale, indicating that the subjects rate the lighting for their tasks to be more positive than negative. The test luminaire usually rated better for task performance and satisfaction but the results were not statistically significantly different from the reference luminaires.

Glare was identified as a problem for 15 out of 36 subjects. The subjects were asked to adjust the height of the chair to avoid glare but their body posture while performing the tasks still allowed for perception of glare, either directly from the luminaires or as reflected glare from reading tasks (mostly reading task 1 closer to the luminaire) or computer screen, despite the placement of the computer on the opposite side of the desk from the luminaire. For task lights with such a wide light distribution, which are placed on the desk, an important factor to look into is: how to avoid glare on the computer screen.