| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar collecting device which is light in weight and has a high solar light collecting performance. SOLUTION: The device includes a mirror group consisting of a primary reflecting mirror 11 and a secondary reflecting mirror 12 each having a shape of section of the same parabola in an arbitrary section perpendicular to a certain direction. A primary reflection of an incident ray is carried out with the primary reflection mirror, and then a secondary reflection of the incident ray is carried out with the secondary reflection mirror, thereby focusing a solar ray to one point. Since a parabolic reflector of lines focus type is adopted, the reflector is constituted of a frame of predetermined shape and a film mirror body, and the electromagnetic wave focusing device can be made thin and lightweight. Further, the electromagnetic wave focusing device can be bent without considerable loss of accuracy and considerable increase of mass. Accordingly, the mirror body of itself is bent, made small, stored in such a narrow space of a rocket or the like, transported to a space the solar collecting device which has high light collecting performance with accuracy is realized on the spot. |
