A mathematical model for the calculation of illumination for the inclined cultivation plane that is used for the stereoscopic plant cultivation equipment was constructed and it's adequacy verified by measuring illumination. then, the optimum placement of lighting fixtures e. g. lighting fixtures's variety interval, height etc. was searched using computer simulation based on the mathematical model. Result shows that average illumination (about 20 klx) and nearly uniform illumination distribution on the inclined cultivation plane were obtained with minimum number of lamps.
