PURPOSE: To obtain convergent efficiency higher than the area of installation by mounting an optical guide section guiding solar rays, absorbing solar rays guided by the optical guide section to a light absorbing section and composing the light absorbing section of light absorbing means formed onto a plurality of the bodies of revolution.

CONSTITUTION: Optical guide sections 12, 13 constituted of convergent bodies 12a, 13a such as a lens and reflecting mirrors 12b, 13b are installed at the positions of both sides of a light absorbing section 11 holding a light absorber with a plurality of solar cells. The positions and angles (directions) of each optical guide section 12, 13 are programmed previously, and controlled as time goes by. The light absorbing section 11 has three sets of pairs of the columnar bodies of revolution 14, 14a-14f. Solar cells formed onto flexible supporters are stuck and organized to the wholes of each surface, and each body of revolution 14 is set up rotatably at fixed speed in the mutually opposite directions by a motor. Even light projected from reflecting plates on a rear can be received during a period when light is not received directly.