60 cm
0
lux at your eyes (approx.)
0
200 lux = ordinary room light
Distance from lamp to your eyes:
60
cm
Brightness step (like a 3-step touch dimmer)
Low (20%)
Medium (60%)
Full (100%)
Bulb colour
2700 K warm
4000 K neutral
6500 K cool
Model: a 125-lumen lamp (about what a small rechargeable bedside lamp gives) treated as a point source: lux ≈ lumens ÷ 4π × brightness ÷ distance². Real shades, walls and bedding change this.