| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar light condensing unit without using any additional sun light tracking means or the like usable in outdoor open spaces, on building roofs, walls, under handrails, and installations on seas and ships which are shaken continuously under influence of waves. SOLUTION: Incident light through a glass 20 is divided by means of a plurality of unit light collecting tubes 1a of almost the same shape arranged in parallel in a light collecting tube 1, and the light reflected is collected at a point P1 of the light collecting tube 1 and its circumferences by a curved reflecting panel R1. Next, the light enters a first light condensing part, is reflected and collected into a narrow range, succeedingly collected into a further narrow range in a second light condensing part, and sent to light guide materials. COPYRIGHT: (C)2005,JPO&NCIPI
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