Whereas downlights represent fixed-location general lighting, spotlights can be used flexibly in the area of exhibitions and presentations. Due to their narrow-beam light distribution, spotlights have high glare control. Directed light results in good modelling capabilities.
Lighting criteria for usable areas:
- illuminance level, depending on the activity
- luminance distribution to avoid direct and secondary glare
- cut-off angle and position of the luminaire restrict glare and increase visual comfort
- the choice of lamp determines the light colour and colour rendition