| 摘要 |
PROBLEM TO BE SOLVED: To make high the luminance of projection light viewed from a specific direction by guiding the light from a light source by a light guide means and projecting it as light which has directivity of a small angle from the projection surface of the light guide means to a specific direction. SOLUTION: The light source lamp 16 is arranged by the light guide means 10, which consists of a light guide plate 11 and a light guide part 12 provided on the top surface of the light guide plate 11. Further, the light guide part 12 is constituted by putting together many linear light guides which guide light along the length and this light guide part 12 consists of an aggregate of many mutually adhered optical fiber. Further, a reflector 17 which reflects light to the end surface of the light guide plate 11 is arranged behind this light source lamp 16. Then the light from the light source lamp 16 is made incident on the end surface of the light guide plate 11 and guided in the light guide plate 11 along its surface, guided in the respective light guides of the light guide part 12 from the plate 11 and guided in the respective light guides along the length, and projected from the surface of the light guide part 12. |
