Light energy concentrating device

A solar concentrating reflector assembly comprising:

• a frame;
• a plurality of half-parabolically shaped reflector segments, each segment having one end defining the vertex of said half-parabola and the other end defining the aperture of said half-parabola;
• mounting means for pivotably attaching each of said segments to said frame for rotation about a first axis, said first axis defined by a line connecting the vertex end of the segment with the aperture end of the segment, said segments forming a half-parabolically shaped trough when not pivoted;
• one end of said first axes being longitudinally offset from an imaginary plane perpendicular to the axis of the half-parabolically shaped trough by an amount equal to:
• aperture width-[0.45 log (10 focal length)]
• where the aperture width is equal to twice the perpendicular distance from the aperture of the half-parabolic trough to its vertex and the focal length is the distance from the vertex to the focal point divided by twice the aperture width;
• a light energy receiving medium mounted along a line formed by the loci of the foci of each half-parabolically shaped segment when said segments are not pivoted;
• means for pivoting said segments in unison about said first axes;
• means for pivoting said frame about a second axis, said second axis being defined by a line on which said energy receiving medium is fixed.