由於在綠建築永續經營的觀念下，因此如何將日光導入室內而獲取良好演色指數的環保節能的導光結構其重要程度日趨重要。本篇論文欲設計一個導光結構使其能將室外的大面積光源經由此結構而轉變為趨近線光源，之後在將此線光源轉成趨近高能的點光源後，才將其導引入室內深處轉為照明光源。此設計的結構為運用非成像光學中的ㄧ對大小拋物反射照，將日光鏡進行壓縮後再搭配一個光導結構將其以單向出射用以達到線光源的趨近效果，最後再搭配一組符合此線光源的尺寸的相同結構用以達到點光源趨近的功用。

Due to the idea of everlasting green architecture, it is of increasing importance to guild natural light into indoors. The advantages are multifold – to have better color rendering index, excellent energy savings from environments viewpoints and make humans more healthy ,etc. Our search is to design an innovative structure, to convert outdoor sun light impinges on larger surfaces, into near linear light beam sources, later convert this light beam into near point sources which enters the indoor spaces then can be used as lighting sources indoors. We are not involved with the opto-electrical transformation, to the guild light into to the building, to perform the illumination, as well as the imaging function. Because non-imaging optics, well known for apply to the solar concentrators, that can use non-imaging structures to fulfill our needs, which can also be used as energy collectors in solar energy devices. Here, we had designed a pair of large and small parabolic reflector, which can be used to collect daylight and change it’s area from large to small. Then we had made a light-guide system that had been designed by us use of this parabolic reflector to guide the collection light, can pick up the performance for large surface source change to near linear source, which when daylight through our structure design. At last,we had set an equal structure to receive this near linear source, which fit in with the size of the near linear source, then can pick up the performance for near linear source change to near point source.

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