The standard values for service illuminance (Em [Lux]), color appearance (F), color rendering group (Ra), and unified glare restriction class (UGRL) according to EN 12464-1 are listed in the table for the various types of interior or activity. The ratings for service illuminance, color rendering group, and direct glare restriction class represent minimum values to be met by the lighting system.


Interiors / Activities

Em[lx]

F

Ra

UGRL

Filing, copying, circulation areas, etc.

300

ww, nw

80

19

Writing, typewriter writing, reading, data processing

500

ww, nw

80

19

Technical drawing

750

ww, nw

80

16

CAD workstations

500

ww, nw

80

19

Meeting and conference rooms

500

ww, nw

80

19

Reception areas

300

ww, nw

80

22

Archives

200

ww, nw

80

25