Luminance Curve System

The Luminance Curve System (LCS) is used in many contries. It provides quick answers through simple to use graphs. To assess the glare situation, the most critical work place within the room is looked at. From here, the ...

LCS Index Illuminance on Working Plane [lux]
A 2000 1000 500 <=300        
B   2000 1000 500 <=300      
C     2000 1000 500 <=300    
D       2000 1000 500 <=300  
E         2000 1000 500 <=300
Graph a b c d e f g h
Lookup table for LCS glare assessment
lcs

Example of a set of luminance curves

The LCS is based on experimental data from a large group of observers.

UGR 15.5 17.0 18.5 20.0 21.5 23.0 24.5 26.0
LCS A B C D E F G H
Comparing UGR and LCS