Category:Units of luminance

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This category identifies units of luminance. The derived SI unit of luminance is candela per square metre (cd/m2).

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SI photometry quantitiesScript error: No such module "navbar".
Quantity Unit Dimension
[nb 1] 		Notes
Name Symbol[nb 2] Name Symbol
Luminous energy QvScript error: No such module "Check for unknown parameters".[nb 3] lumen second lm⋅s T⋅J The lumen second is sometimes called the talbot.
Luminous flux, luminous power ΦvScript error: No such module "Check for unknown parameters".[nb 3] lumen (= candela steradian) lm (= cd⋅sr) J Luminous energy per unit time
Luminous intensity IvScript error: No such module "Check for unknown parameters". candela (= lumen per steradian) cd (= lm/sr) J Luminous flux per unit solid angle
Luminance LvScript error: No such module "Check for unknown parameters". candela per square metre cd/m2 (= lm/(sr⋅m2)) L−2⋅J Luminous flux per unit solid angle per unit projected source area. The candela per square metre is sometimes called the nit.
Illuminance EvScript error: No such module "Check for unknown parameters". lux (= lumen per square metre) lx (= lm/m2) L−2⋅J Luminous flux incident on a surface
Luminous exitance, luminous emittance MvScript error: No such module "Check for unknown parameters". lumen per square metre lm/m2 L−2⋅J Luminous flux emitted from a surface
Luminous exposure HvScript error: No such module "Check for unknown parameters". lux second lx⋅s L−2⋅T⋅J Time-integrated illuminance
Luminous energy density ωvScript error: No such module "Check for unknown parameters". lumen second per cubic metre lm⋅s/m3 L−3⋅T⋅J
Luminous efficacy (of radiation) KScript error: No such module "Check for unknown parameters". lumen per watt lm/W M−1⋅L−2⋅T3⋅J Ratio of luminous flux to radiant flux
Luminous efficacy (of a source) Template:Mvar[nb 3] lumen per watt lm/W M−1⋅L−2⋅T3⋅J Ratio of luminous flux to power consumption
Luminous efficiency, luminous coefficient Template:Mvar 1 Luminous efficacy normalized by the maximum possible efficacy
See also: Template:Hlist

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  1. ↑ The symbols in this column denote dimensions; "L", "T" and "J" are for length, time and luminous intensity respectively, not the symbols for the units litre, tesla and joule.
  2. ↑ Standards organizations recommend that photometric quantities be denoted with a subscript "v" (for "visual") to avoid confusion with radiometric or photon quantities. For example: USA Standard Letter Symbols for Illuminating Engineering USAS Z7.1-1967, Y10.18-1967
  3. ↑ a b c Alternative symbols sometimes seen: Template:Mvar for luminous energy, Template:Mvar or Template:Mvar for luminous flux, and Template:Mvar for luminous efficacy of a source.

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Script error: No such module "anchor".Pages in category "Units of luminance"

The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes.

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