| 摘要 |
PURPOSE:To decrease the part where optical fibers are used and to reduce cost by making the light from a flexible optical transmission part via a lens into parallel light then conducting the parallel light to an optical transmission part consisting of a pipe having mirrors in te internal direction-changing parts. CONSTITUTION:Introduction of the solar light into a building is accomplished by introducing first the light condensed by an automatic solar light collector 10 into an optical fiber 21 (or bundled fiber) which can move flexibly, changing the light emitted from the other end thereof into parallel light by a lens 22 and advancing rectilinearly said light into a pipe 23 laid on and in the building. The advnacing direction of the light is changed optionally by mirrors 24 in the pipe 23 and is made into illuminating light 26 by a convex mirror 25 provided at the exit end of the pipe 23, by which the inside of the room is illuminated. Then the parts except the movable parts of the optical transmission part are constituted of the pipe and therefore the part where the optical fibers are used is decreased and the cost is reduced. |
