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DokuWiki Manual
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Mathematically, 1 lux = 1 lumen/m2.
Light brightness, as perhaps measured by a light meter.
Examples
| Illuminance | Surfaces illuminated by: |
|---|---|
| 0.0001 lux | Moonless, overcast night sky (starlight) |
| 0.002 lux | Moonless clear night sky with airglow |
| 0.27–1.0 lux | Full moon on a clear night |
| 3.4 lux | Dark limit of civil twilight under a clear sky |
| 50 lux | Family living room lights (Australia, 1998) |
| 80 lux | Office building hallway/toilet lighting |
| 100 lux | Very dark overcast day |
| 320–500 lux | Office lighting |
| 400 lux | Sunrise or sunset on a clear day. |
| 1000 lux | Overcast day;[3] typical TV studio lighting |
| 10000–25000 lux | Full daylight (not direct sun) |
| 32000–100000 lux | Direct sunlight |
| Minimum light output (lumens) | Electrical power consumption (watts) | ||
| Incandescent | Compact fluorescent | LED | |
| 200 | 25 | 3-5 | 3[6] |
| 450 | 40 | 9–11 | 5–8 |
| 800 | 60 | 13–15 | 9–12 |
| 1,100 | 75 | 18–20 | 13–16 |
| 1,600 | 100 | 24–28 | 18–22 |
| 2,400 | 150 | 30–52 | 30[7] |
| 3,100 | 200 | 49–75 | 32[8] |
| 4,000 | 300 | 75–100 | 40.5 |
