| abstract |
Provided is a solar light collecting mirror, with which high light collecting efficiency can be obtained, even in a solar thermal power generation system like a tower solar thermal power generation system wherein a distance between a reflecting mirror and a heat collector is long, i.e., from several tens of meters to several hundreds of meters, and concave mirrors having various curvatures can be easily obtained, said solar light collecting mirror being manufactured easily at low cost. Also provided is a solar thermal power generation system using the solar light collecting mirror. In the cases where the material of a reflecting section is a thin and low-rigidity material, as in the case of a film mirror, even if a concave mirror can be formed with elastic deformation, there is a possibility of having the surface locally wave and deteriorating the light collecting efficiency when the material is used alone. When an elastically deformable frame is firmly adhered to the rear surface of the film mirror, the waving or the like of the film mirror can be effectively suppressed when the film mirror and the frame are integrally elastically deformed. |