| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a condensing photovoltaic power-generating device for improved solar light usage efficiency by allowing the light incident on the space between optical power-generating elements to be made incident on the photovoltaic power-generating element itself. SOLUTION: A transparent substrate wherein one surface is a light incidence surface, a transparent member provided on the surface opposite to the light incidence surface of the transparent substrate, a light reflective layer which is, comprising a light reflective surface, so provided that the reflective surface faces the transparent member, and a plurality of photovoltaic power-generating elements 1-3 provided in the transparent member, are provided. Here, the light reflective surface of the light reflective layer comprises first and second V grooves whose cross-section is V-groove shape, with the first and second V grooves orthogonal to each other.</p> |
