PURPOSE:To improve the synthetic using efficiency of solar energy sharply by forming a reflecting body arranged on the peripheral part of a photoconductor and a means for converging the energy of the reflected light component. CONSTITUTION:The reflecting member 13 is arranged on the peripheral part of the photoconductor 12 and a photoelectric converter 14 for converting the energy of an optical component reflected by the reflecting body 13 into electric energy is also arranged. The photodetecting terminal 12a of the photoconductor 12 is arranged on the focal position of e.g. a light component of visual light and the light component is transmitted to an optional position to be used for lighting or the like. Since the light of an infrared-ray part is reflected and supplied to the photoelectric converter 14, the photoelectric converter 14 can use the infrared-ray part of solar light effectively and obtain electric energy. Thus, the synthetic using efficiency of solar energy can be sharply improved.
