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Area Lighting / Emission, optical properties of materials

IEV ref845-04-76

Symbol
μ(λ)

en
spectral linear attenuation coefficient (at a point in an absorbing and diffusing medium, for a collimated beam of radiation)
quotient of the relative decrease caused by both absorption and diffusion of the spectral concentration of the radiant flux Φe, λ of a collimated beam during its propagation along an elementary length dl at the point considered, by the length dl

μ( λ )= 1 Φ e,λ d Φ e,λ dl MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaGWaciab=X7aTnaabmaabaGaeq4UdWgacaGLOaGaayzkaaGaeyypa0ZaaSaaaeaacaaIXaaabaGaeuOPdy0aaSbaaSqaaiaabwgacaqGSaGaeq4UdWgabeaaaaGccqGHflY1daWcaaqaaiaabsgacqqHMoGrdaWgaaWcbaGaaeyzaiaabYcacqaH7oaBaeqaaaGcbaGaaeizaiaadYgaaaaaaa@4B2B@

unit : m–1


fr
coefficient d'atténuation linéique spectral (en un point d'un milieu absorbant et diffusant, pour un faisceau quasi parallèle de rayonnement) m
quotient de la diminution relative, produite à la fois par absorption et diffusion, de la densité spectrale du flux énergétique Φe, λ d'un faisceau quasi parallèle pendant un trajet élémentaire au point considéré, par la longueur dl de ce trajet

μ( λ )= 1 Φ e,λ d Φ e,λ dl MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaGWaciab=X7aTnaabmaabaGaeq4UdWgacaGLOaGaayzkaaGaeyypa0ZaaSaaaeaacaaIXaaabaGaeuOPdy0aaSbaaSqaaiaabwgacaqGSaGaeq4UdWgabeaaaaGccqGHflY1daWcaaqaaiaabsgacqqHMoGrdaWgaaWcbaGaaeyzaiaabYcacqaH7oaBaeqaaaGcbaGaaeizaiaadYgaaaaaaa@4B2B@

unité: m–1


ar
معامل التوهين الطيفي الخطي (لنقطة على سطح ماص ومنتشر لحزمة أشعة متوازية)

de
spektraler Schwächungskoeffizient (an einem Punkt eines absorbierenden und streuenden Mediums für ein quasiparalleles Strahlenbündel), m

es
coeficiente de atenuación lineal espectral

fi
spektrinen vaimennuskerroin

it
coefficiente spettrale lineare di attenuazione (di un punto di un mezzo assorbente e diffondente per un fascio di radiazione collimato)

ko
분광 선형 감쇠계수, 흡수 확산 매체

ja
分光線形減衰係数

no
nb spektral lineær dempningskoeffisient

nn spektral lineær dempingskoeffisient

pl
współczynnik osłabienia liniowego widmowy (w punkcie ośrodka pochłaniającego i rozpraszającego dla równoległej wiązki promieniowania)

pt
coeficiente de atenuação espectral linear (num ponto de um meio absorvente e difusor, para um feixe quase paralelo de radiação)

sv
dämpningskoefficient

Publication date: 1987
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