| 摘要 |
PURPOSE:To obtain an effecient condenser type solar electric generator in a simple and inexpensive structure which is resemble to a one axis tracking type, by providing a second linear Fresnel lens between a solar cell and a linear Fresnel lens so that the relative distance between them can be freely adjusted. CONSTITUTION:In the Figure, a numeral 2 is the linear Fresnel lens, a, a' and a'' indicate light beams which perpendicularly enter the surface of the linear Fresnel lens 2, and b, b' and b'' indicate the light beams which obliquely enter the surface of the linear Fresnel lens 2. A numeral 3 is the linear Fresnel lens. Caustic curves c and c', i.e. the relative distance (y) to the solar cells can be adjusted. For example, by controlling the distance (y) with the incident angle of the solar light to the Fresnel lens as a parameter, the solar light can be always condensed to the poisitions c-c' regardless of the incident angle of the solar light. |
