| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflecting mirror for condensing sunlight excellent in heat resistance, positive reflectivity and light condensing characteristics, having a small amount of warpage of a film mirror.SOLUTION: The reflecting mirror for condensing sunlight comprises a film mirror and a frame-shaped supporting member for supporting the peripheral part of the film mirror. The thickness of the film mirror is 0.10-0.30 mm and the supporting member contacts with the film mirror. The reflecting mirror has a curved surface curved in convex shape outwardly in a horizontal direction to an aperture of the supporting member. A curvature radius of the curved surface is 8 mm or more. |
