Method for evaluating light damage to plants caused by night lighting, method for evaluating characteristics of night lighting, and light pollution avoiding lighting apparatus

摘要

For the samples obtained by collecting and processing the leaf blades of plants grown under night-lighting conditions and without night-lighting in an artificial meteorological instrument, the gene expression level is obtained by a genetic analysis method. The ratio of light pollution avoidance is calculated as a ratio, and light damage to plants is evaluated. Thereby, it can evaluate appropriately and effectively about the light pollution to the plant by night illumination. The light pollution avoiding illumination device sets the pulse emission frequency and the duty ratio of the pulse emission light source so that the light pollution avoidance ratio is 0.8 or more. Further, a plurality of types of pulsed light sources are combined to increase the average color rendering index so that a natural feeling can be obtained as a night illumination device. Thereby, as a night illumination device installed in the vicinity of the vegetation area, it is possible to obtain a natural feeling for a person without causing light damage to the plant.