| 摘要 |
PURPOSE:To provide a variable-color lighting system that produces light with high-purity colors and has a wide range of color expressions by having a plurality of specific electrodeless fluorescent discharge lamps. CONSTITUTION:This variable-color lighting system includes a plurality of electrodeless fluorescent discharge lamps 11A, 11B, 11C, having respective phosphors 20A, 20B, 20C of predetermined colors applied to their insides and respective color filters 21A, 21B, 21C applied to their outsides to complement the colors of the phosphors applied to the insides, and made to emit light beams of the predetermined colors by passing high-frequency currents through exciting coils. Preferably the lighting system includes an optical diffusion means (internal diffusion panel 13 and external diffusion panel 14) for diffusing and projecting the light beams emitted by the discharge lamps 11A, 11B, 11C, an unnecessary radiation prevention means (wire gauge 12) disposed between each discharge lamp 11A, 11B, 11C and the optical diffusion means to absorb and block radio waves produced from the exciting coils of the discharge lamps 11A, 11B, 11C, and control means (computer 15, digital circuit 16, drive circuit 17) for controlling the brightness of each discharge lamp 11A, 11B, 11C. |
