.14
The Lighting Handbook
Glare glare limitation
Direct glare Reflected glare
Cause
– Luminaires without glare control
– Very bright surfaces
Effect
– Loss concentration
– More frequent mistakes
– Fatigue
Remedy
– Luminaires with limited luminance levels
– Blinds windows
Cause
– Reflective surfaces
– Incorrect luminaire arrangement
– Incorrect workstation position
Effect
– Loss concentration
– More frequent mistakes
– Fatigue
Remedy
– Matching luminaire workstation (layout)
– Indirect lighting
– Matt surfaces
Quality characteristics lighting
The evaluation glare
The glare all luminaires that are the
room regularly can evaluated with the
UGR method, specified the standard
EN 12464-1 “Lighting indoor workplaces”.
However LED luminaires with very bright
light points, which can perceived indi
vidually, are crucial.
Classic VDU workstation luminaires
The standard requires the luminance the
luminaire below 3000 1500 cd/m2 at
an angle 65°