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3 Posts in this encyclopedia categoryUGR Value Explained: Glare Assessment in Interior Lighting
The UGR value (Unified Glare Rating) is a standardised metric for assessing psychological glare caused by a lighting installation in interiors. It is not measured on an individual luminaire but describes the glare effect of an entire lighting situation. DIN EN 12464-1 defines different limits depending on the visual task – for example UGR ≤ 19 for office and screen-based workstations.
Uplight Explained: Indirect Light Through Ceiling Reflection
An uplight is a luminaire that directs its light upward towards the ceiling. The reflected light returns into the room as indirect, diffused light, creating glare-free ambient illumination. Uplights are particularly common as floor luminaires (uplighters) but are also used as wall luminaires, recessed luminaires and pendant luminaires.
Uplighter Explained: Function, Variants & Applications
An uplighter is a floor luminaire that directs its light predominantly upward towards the ceiling. The ceiling acts as a reflective surface, distributing the light evenly and glare-free throughout the room.