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”.
Classic VDU workstation luminaires
The standard requires the luminance the
luminaire below 3000 1500 cd/m2 at
an angle 65°.
.
However LED luminaires with very bright
light points, which can perceived indi
vidually, are crucial
