Dimpled Planar Lightguide Solar Concentrators

Planar lightguide solar concentrator

“…The length, width and height of the planar lightguide are 600mm,30mm and 2mm, respectively. For comparison, this study also calculates the optical efficiency of previous parallel-type planar lightguide solar concentrator [2] with same configuration. Figure 4(a) and 4(b) show optical efficiencies of parallel-type and sawtooth-type planar lightguide solar concentrator with different bypass element interior angles of geometric concentration ratio C geo = 300 and C geo = 900, respectively.…”

“…In this design, sunlight is collected by each lens in a twodimensional lens array and is coupled into planar lightguide using localized micro structure placed at each lens focus. Where the micro structure is dimpled structure [2,3]. In this design, the planar lightguide was shaped in sawtooth-shape in one side.…”

“…As Fig. 1 shows, the planar lightguide is constructed by several prism structures, and the bottom of each prism structure contains several micro dimpled structure [2,3]. The function of lens array is collecting sunlight into the planar lightguide.…”

“…The transverse lengths of sawtooth-part and parallel part are L 1 and L 2 , respectively. The bottom of the planar lightguide contains several micro dimpled structure [2,3]. As Fig.…”

Horizontally staggered lightguide solar concentrator with lateral displacement tracking for high concentration applications

“…On the other hand, the imaging concentrators originate from the traditional imaging optical systems, such as the parabolic dish and trough concentrator [2]. Recently, planar lightguide solar concentrators [3][4][5] combined an imaging lens array with a lightguide layer with light injection facets have attracted much attention for their promising compactness, lightweight, and low-cost.…”