IEVref:845-01-35ID:
Language:enStatus: Obsolete
Term: luminance (in a given direction, at a given point of a real or imaginary surface)
Synonym1:
Synonym2:
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Symbol: Lv
L
Definition: quantity defined by the formula L v = d Φ v dAcosθdΩ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadYeadaWgaaWcbaGaaeODaaqabaGccqGH9aqpdaWcaaqaaiaabsgacqqHMoGrdaWgaaWcbaGaaeODaaqabaaakeaacaqGKbGaamyqaiabgwSixlGacogacaGGVbGaai4CaiabeI7aXjabgwSixlaabsgacqqHPoWvaaaaaa@4935@ where dΦv is the luminous flux transmitted by an elementary beam passing through the given point and propagating in the solid angle dΩ containing the given direction; dA is the area of a section of that beam containing the given point; θ is the angle between the normal to that section and the direction of the beam

unit: cd · m-2 = lm • m-2 • sr -1

NOTE – See notes 1 to 5 to 845-01-34.


Publication date:1987
Source
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 845-01-35.gif
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