Re-reflecting Paraboloid Dish Collector

A solar energy concentrating system comprising:

• a) four concentrating and/or redirecting mirrors, forming a re-reflecting paraboloid dish collector (“RPDC”), which includes:
• i) a main mirror in the shape of a large paraboloid dish formed by a plurality of paraboloid mirror segments;
• ii) a re-reflecting mirror, a much smaller paraboloid dish, preferably less than 10% of the radius of the main mirror and preferably less than 5% of the radius of said main mirror, located on a fixed position above the main mirror at such distance that is approximately the summation of the two abovementioned mirrors' focal distances;
• iii) an axial mirror, preferably a flat mirror, located in the proximity of the projected intersection of a central light pipe and an axial light pipe, and;
• iv) a cavity mirror, preferably a flat mirror, located on a fixed position at the projected intersection of an axial light pipe and a cavity light pipe.
• b) three lights pipes, including:
• i) a central light pipe;
• ii) an axial light pipe, and;
• iii) a cavity light pipe.
• c) a sun-tracking mechanism, including:
• i) a polar axis tracking mechanism, and;
• ii) a declination axis tracking mechanism.
• d) a solar cavity-receiver.