Lumen can mean:

• Lumen (unit), the SI unit of luminous flux
• Lumen (anatomy), the cavity or channel within a tubular structure
• Thylakoid lumen, the inner membrane space of the chloroplast
• 141 Lumen, an asteroid discovered by the French astronomer Paul Henry in 1875
• Lumen (band), Russian rock/metal band

[edit] See also

• Candela
• Lux

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