Interreflections in Asymmetrical Rooms

Available empirical and analytical data for the predetermination of luminance and illumination distributions are principally reported for rooms that display axial symmetry. An analytical technique for the prediction of lighting in rooms with luminous inputs and surface reflectances that depart from axial symmetry is outlined in this paper. The Luminous Analogue Computer which is a network or lumped parameter representation of the photic filed is used for the numerical results reported here. A cubial room and a large room are analyzed for luminous inputs and reflectances which are non-uniform over the walls, ceiling and floor.