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Illuminance Conversion
1 lx =
fc
About Illuminance Conversions
Illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface.
The lux (lx) is the SI derived unit of illuminance. The foot-candle (fc) is a non-SI unit used in photography, film, and architecture in the US.
Common Illuminance Conversions
Illuminance Units Explained
Lux (lx)
The lux is the SI derived unit of illuminance, measuring luminous flux per unit area. One lux is equal to one lumen per square meter.
Foot-candle (fc)
The foot-candle is a non-SI unit of illuminance. One foot-candle is defined as the amount of illumination the inside surface of a one-foot-radius sphere would be receiving if there were a uniform point source of one candela at the center.
All Illuminance Units
- Lux(lx)
- Foot-candle(fc)
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