10/ 2010
BENNING LUXMETER B
25
5. Standard illumination values
Type of
visual task
Practical examples
Normal illumina-
tion (lighting
intensity) in lux
Orientation
Traffic zones, subordinate rooms
20
Filled storage rooms, hallways
in buildings for persons
50
Easy visual
tasks
Production plants with occasional activi
-
ties, toilet facilities, engine rooms, traffic
ways for vehicles in buildings, stair
-
cases, conveyor belts, medical rooms
100
Crude works, continuously occu-
pied working places in produc-
tion plants, storage rooms with
reading tasks, canteens
200
Normal
visual tasks
Conference rooms, gymnasiums
300
Offices, medical facilities (urgenices)
500
Technical drawing rooms
750
Difficult
visual tasks
Supervision places, technical draw
-
ings, open plan offices, assem-
bly rooms, testing stations
1000
Very difficult
visual tasks
Assembly rooms for small com-
ponents, show windows
1500
Table 3:
Standard values of inside working environment due to the
DIN 5035 standard
The nominal values listed above are reference values. Generally they refer to
horizontally working surfaces at a height of 0.85 m above floor and a mean
ageing condition of the lighting.
Condition
Illuminance (lux)
Bright sun
50.000 - 100.000
Hazy day
25.000 - 50.000
Cloudy bright
10.000 - 25.000
Cloudy dull
2.000 - 10.000
Very dull
100 - 2.000
Sunset
1 – 100
Good street lighting
20
Poor street lighting
0,1
Full moon
0,01 - 0,1
Starlight
0,001 - 0,001
Overcast night
0,00001 - 0,0001
Table 4:
Typical Illuminance levels at outdoor places
