| 摘要 |
The arrangement is provided with a light valve device, preferably a liquid-crystal cell, a fluorescence element (5) and a light source (15). The fluorescence element (5) consists of a material having a refractive index greater than 1, contains fluorescing particles and is provided with light-exit windows (13, 14); it captures incident ambient light by fluorescence scattering and subsequent total reflection, relays the fluorescent light and finally couples it out at an increased concentration through the light-exit windows. The light source (15) contains a radioactive substance whose radiation activates a luminescent material. <IMAGE> |
