Common and Recommended Light Levels Indoor The outdoor light level is approximately 10,000 lux on a clear day. In the building, in the area closest to windows, the light level may be reduced to approximately 1,000 lux. In the middle area its may be as low as 25 - 50 lux. Additional lighting equipment is often necessary to compensate the low levels.
Earlier it was common with light levels in the range 100 - 300 lux for normal activities. Today the light level is more common in the range500 - 1000 lux - depending on activity. For precision and detailed works, the light level may even approach 1500 - 2000 lux.
The table below is a guidance for recommended light level in different work spaces:
Illumination (lux, lumen/m2)
Public areas with dark surroundings
20 - 50
Simple orientation for short visits
50 - 100
Working areas where visual tasks are only occasionally performed
100 - 150
Warehouses, Homes, Theaters, Archives
Easy Office Work, Classes
Normal Office Work, PC Work, Study Library, Groceries, Show Rooms, Laboratories
Normal Drawing Work, Detailed Mechanical Workshops, Operation Theatres
Detailed Drawing Work, Very Detailed Mechanical Works
1500 - 2000
Performance of visual tasks of low contrast and very small size for prolonged periods of time
2000 - 5000
Performance of very prolonged and exacting visual tasks
5000 - 10000
Performance of very special visual tasks of extremely low contrast and small size
10000 - 20000
Jiangmen Inbright Lighting Co., Ltd is authorized by HK Inbright Lighting CO., Limited and Jumbo Rich Hong Kong Co.,Limited in the China mainland, taking up a series of led productions, research, development, sale and service as one of the high-tech enterprise. Since its foundation, we are committed to the research and LED series products promotion, now it has become the domestic large-scale LED lighting company, one of the professional manufacturers in domestic and overseas for lighting, lighting project to provide efficient, energy saving, high quality, stability of LED products.
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