Light trap for solar energy absorber - has adjacent reflectors with base surfaces at acute angles to incidence of rays

The absorber consists of a body in heat-conductive contact with a heat carrier. It has an associated light trap, which consists of a heat insulating material, and has a reflecting surface. The trap is positioned in front of the absorber (28) in the path of the solar rays, and has an aperture (31) to allow their passage. Reflective surfaces (34) and apertures are arranged so that the rays which reach the surfaces are conducted onto the absorber. The light trap may consist of several reflectors positioned next to each other. Each has a base surface directed towards the absorber, and positioned at an acute angle to the direction of incidence of the solar rays.