Colour rendering indices are characteristics of light sources, but nothing is said about the influence of the room where they are used. The walls' effect is analysed using the parametric approach of colour rendering. This formulation affords the possibility to classify the spectral reflection factors. Particularly green and red colours tend to change colour rendering more than blue or yellow ones do. The walls' effect really exists as it is shown in two examples. If it is unwanted, a method is proposed to avoid it by changing the light source or the colour of the walls.
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References
1.
Embrechts, J.J. , Colour rendering and spectral power distribution-a new parametric approach, Ltg. Res. & Technol., 16 (3), 119 (1984).
2.
Embrechts, J.J. , Modele de l'influence des parois sur la chromaticite du rayonnement lumineux en espace clos, Lux, 133 (May-June), 5-11 (1985).
3.
Cie Publication no. 40 (TC 1.5), Calculations for interior lighting. Basic Method, Bureau central de la CIE, Paris (1978).
4.
Di Laura, D. , On the simplification of radiative transfer calculations, Journal of IES (New York), 12 (October 1982).
5.
British Zonal Method, IES (CIBSE), Technical Report no. 2 (1971) or see Henderson, S.T. and Marsden, A.M., Lamps and Lighting, 405 (Edward Arnold Publishers Ltd., London, 1972).
6.
CIE Publication no. 13.2 (TC 3.2), Method of measuring and specifying colour rendering of light sources, Bureau central de la CIE, Paris (1974).
