Unified Glare Rating
Unified Glare Rating or UGR is a number that values glare with the selected location of the current fixtures, which can then be compared in tables for the current business.
Refers to the light from the luminous parts of the luminaire which is directed at the viewer's eye.
Is backround bright in the current case.
Is the angle at which the light of the fixture reaches the viewer's eye measured in steradians.
A value for the location of the luminaire in relation to the deviation from the viewing angle.
Is a number that values glare with the selected location of the current luminaires.
Refers to the light that hits the current surface from the current source.
Glare index 1
Glare adapted to the De Boer scale (1967).
Glare index 2
Dazzle with a later adjustment according to Bullough (2011) adapted to the De Boer scale.
De Boer scale
|9 ||Just notable|