Knowledge Base DIALux 4

Glare is the word given to a problematical distribution of luminance and/or excessive luminance contrast in the field of vision which causes disturbed vis...

Glare originating directly at the light source. The degree of direct glare depends on the size and luminance of the visible luminous areas of all the lumi...

Various methods have been developed in different countries for assessing the risk of direct glare from a lighting system, e.g. Visual Comfort Probability, ...

Glare that is perceived solely as a subjective discomfort without causing any significant loss of visual performance. If it persists, however, discomfor...

Glare that causes a loss of visual performance (e.g. reduced perception of shapes and capacity for discrimination caused by glare from the headlights of...

Luminaire specifications generally include a luminance limiting diagram (Söllner) pursuant to EN 12464 or CIE 29/2. This shows the directly visible mean...

The Unified Glare Rating method (UGR) has been developed by the CIE (Commission International de l'Eclairage) in order to harmonise glare classificati...

Glare and loss of contrast caused by reflections from luminous objects (e.g. on glossy paper or computer screens). In general, reflections lead to reduced...