Patent ID: 7553035

Claim:
A first parabolic trough reflector, comprising: a coordinate system defining a length of a curve of a parabola; a first parabolic trough reflector mounted in a rigid support structure as defined by the coordinate system, each end of the first parabolic trough reflector having an extended length secured in a mounting block with defined slots; the first parabolic trough reflector comprising a flexible reflective material mounted in the rigid support structure, each end of the flexible reflective material having an extended length secured in the mounting block attached to the rigid support structure with the defined slots such that the flexible reflective material forms the first parabolic trough reflector when supported only by the mounting blocks; the first parabolic trough reflector has a length and a width as well as a focal point and a reflective surface directing incoming radiation toward the focal point, the first parabolic trough reflector being split about a midpoint of the width; a second parabolic trough reflector positioned between the first parabolic trough reflector and the focal point of the first parabolic trough reflector, the second parabolic trough reflector having a length approximately the same as the first parabolic trough reflector and a width about the same as the split of the first parabolic trough reflector, the second parabolic trough reflector having a same focal point as the first parabolic trough reflector and a reflective surface facing away from the focal point to direct radiation reflected from the first parabolic trough reflector through the split in the first parabolic trough reflector.