| 摘要 |
PROBLEM TO BE SOLVED: To simplify the macroscopic structure of a condenser type solar beam generator, by a method whereina photodetectors are provided on the surface of a medium filling up the space held by a photodetecting surface and a diffracting surface, while the refractive index of the medium is specified to exceed that of the outer photo- detecting surface. SOLUTION: A condenser type solarlight power generator generates electricity by condensing solar beams 1 in cylindrical photodetectors 6. At this time, a diffracting surface 7 is formed by bonding a sheet in the structure holding an aluminum-made reflecting member between a surface protective member and a backside protective member onto the backside. At this time, a medium 5 is made of a plastic. Since the refractive index of the plastic is about 1.5, the incident angle when the incident light reflecting on the diffracting surface 7 to be entered in the photodetecting surface 4 again does not exceed 41.8 deg.. Therefore, the blaze angle of the diffracting surface 7 is specified to be 45 deg.. In such a constitution, the solar beams having wide wavelength range can be effectively condensed by the diffraction. Accordingly, the condenser having multiple juxtaposed photodetectors 6 in a simple structure can increase the condensing efficiency. |
