| 摘要 |
<p>A method for compensating colour when illuminating fluorescent objects by means of one or more illuminating lamps which emit a significant amount of ultraviolet light, particularly when illuminating flags hoisted on flag poles, wherein the objects include ultralight fluorescent material and have a white or a light colour when illuminated with visible light. The invention is characterized by providing the object with an additional fluorescent material which, when illuminated, fluoresces in a colour which together with a weak blue colour provides a white or essentially white colour by additive colour mixture, the blue colour being derived by illumination of the object with ultraviolet light.</p> |
