Illuminamento

Informazioni Illuminance Conversione

Illuminance measures il amount di light falling on un surface—il total luminous flux per unit area. It tells you how well-lit un surface e, regardless di what color it e o how much it reflects. This distinction e important: un black surface e white surface under il same lamp hanno identical illuminance, but very different luminance (perceived brightness). Illuminance e what un light metro measures e what lighting engineers specify quando designing spaces—it's il starting point per ensuring adequate visibility e visual comfort.

Il SI unit e lux (lx), equal un one lumen per square metro. Illuminance follows il inverse square law: doubling distance da un point source reduces illuminance un one-quarter. Illuminance standards define minimum lighting levels per safety, productivity, e comfort in different environments—offices typically require 300-500 lux, while surgical operating rooms need 10,000-100,000 lux. Building codes, occupational health regulations, e energy codes all reference illuminance requirements.

Our converter handles all standard illuminance units used in lighting design, photometry, e regulatory compliance.

Comuni Illuminance Conversions

Illuminance Unita Riferimento

Lux (lx) – Il SI unit di illuminance, equal un one lumen per square metro. Il worldwide standard per lighting specifications e recommendations. Typical indoor values: home living room 50-200 lux, office workspace 300-500 lux, detailed assembly work 750-1000 lux, surgical operating table 10,000+ lux. Outdoor: overcast giorno ~1000 lux, direct sunlight 30,000-100,000 lux. Photography light metri read in lux o EV (related da EV = log₂(lux/2.5)).

Piede-candle (fc) – Il US customary unit, defined as one lumen per square piede. 1 fc ≈ 10.764 lux. Remains prevalent in American lighting industry, building codes (IESNA), e HVAC specifications. US workplace standards often specify piede-candles: general office 30-50 fc, detailed work 50-100 fc. Convertendo mentally: divide lux da 10 per approximate piede-candles.

Phot (ph) – Il CGS unit di illuminance. 1 phot = 10,000 lux = 1 lumen/cm². Too large per most practical applications—even direct sunlight e only circa 10 phots. Occasionally encountered in older scientific literature e high-intensity applications like solar concentrators.

Nox – A unit per very low light levels, defined as 1 millilux (0.001 lux). Used in astronomy, night vision research, e scotopic (rod-mediated) vision studies. Full moonlight provides circa 250 nox; starlight circa 0.1 nox. Il threshold di human vision e circa 0.01 nox.

Metro-candle – An older term equivalent un lux (1 metro-candle = 1 lux). Il name emphasizes il relationship: illuminance da 1 candela at 1 metro distance. Rarely used in modern literature but puo appear in historical documents.

Scopri di Piu

Esplora le nostre guide approfondite su questo argomento:

• Comprendere Lumens e Lux
• LED vs Traditional Lighting
• Lighting Standards e Guidelines