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Lux

Illuminance (light falling on a surface). It is used inside the lumen measurement. ⚠ Some portable listings advertise "lux" as if it meant brightness.

More in Brightness

Lumen ANSI lumens ISO lumens (ISO/IEC 21118)CVIA lumens "LED lumens" / "light source lumens" / "lux" / "peak lumens" ⚠Calibrated lumens / measured lumens Color light output (CLO) / color brightness Brightness uniformity Nits (cd/m²)Foot-lambert (fL)