| 摘要 |
PURPOSE:To enable the inexpensive illumination of a basement etc., by efficiently guiding the sunbeam. CONSTITUTION:One end of a light transmission hose 1 constituted by housing a viscous liquid, solid or gelatinous core 11 into a soft high-polymer clad 12 having the refractive index lower than the refractive index of the core 11 is set in the sunbeam incident position outdoors. The other end or/and the prescribed length flank on the other end side of the light transmission hose 1 is set in a place where the sunbeam does not reach or hardly reaches. Further, the sunbeam received at one end is emitted from the other end or/and the prescribed length flank on the other end side to illuminate the place where the sunbeam does not reach or hardly reaches. |
