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semi-indirect lighting
lighting by means of luminaires having a distribution of luminous intensity such that the fraction of the emitted luminous flux directly reaching the working plane, assumed to be of infinite extent, is 10 % to 40 %
Note 1 to entry: This entry was numbered 845-09-17 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-1162 in CIE S 017:2011.