17-1381

upward light ratio

proportion of the flux of a luminaire or installation that is emitted, at and above the horizontal, when the luminaire(s) is (are) mounted in its (their) installed position

Unit: 1

NOTE ULR is exactly the same as ULORinst as used in CIE 126-1997.

Abbreviation: "ULR"

Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer