International Electrotechnical Commission

EN illuminance
symbol E  
the luminous flux received by an elementary surface divided by the area of this surface

Note 1 to entry: In the SI system of units illuminance is expressed in lux (lx) or lumens per square metre (lm/m2). 1 lux is the illuminance produced on a surface of 1 square metre by a luminous flux of 1 lumen uniformly distributed over that surface.

[SOURCE: IEC 60050-723:1997, 723-08-30]

TC/SC:82Terms     Info     Publications
Published in:IEC 62257-1, ed. 3.0 (2015-10) Terms     Info
Reference number:A.49

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