| 摘要 |
<p>A solar energy collector includes a lens 11 and a parabolic reflector 12 receiving sunlight 1, 1' refracted through the lens and focussing the light onto a receiver target 13 such as a photocell. So as to efficiently collect the sunlight irrespective of the position of the sun Z in the sky, the lens and reflector are rotated with respect to each other about an axis 11' that is perpendicular to the plane of the lens by motors 16a, 16b driving support rollers 15a and 15b. The motor drive control signals are derived by a controller 14 in dependence of the position of the sun and the orientation and geographic position of the collector.</p> |
