Demonstrations – Visual Perception and Health
LED technology offers new spectral and radiative features for lighting applications for which conventional quality criterias and measures (introduced in 1974 and before) are not sufficient. At the same time the knowledge about light impacts on human and about human needs has increased significantly over the last two decades.
The workshop demonstrates the most important features regarding visual perception and non-visual effects which has to be respected for LED applications:
– Spectral quality (colour rendering, fidelity, and preference; whiteness, Colour mixing white – white and black body line, etc.)
– Glare, discomfort, light pressure
– Health effects (sleep quality, alertness, etc.; melanopic factor, amel,v, light dose)
– light directness and shadowness (radiation field).
Recommendations will be given to quantify these effects.
Awareness for the critical features of LED applications will be increased, and (some new) quality criterias (measures) with value ranges will be given. Proposals for solutions will be made.