Sunlight radiation reflection focus system under light transmission roof

Disclosed is a solar radiation reflecting and focusing system under a transparent roof. The system comprises a solar energy receiver (1), a reflecting and focusing surface (2), a first hoisting rod (3A) and a second hoisting rod (3B), a drag bar (4A) and a focusing surface adjustment and control system. The solar radiation reflecting and focusing system is used under a transparent roof of a building, and thus light materials, such as plastic films or fibrous fabric, flexible materials, or light-weight sheet materials are selected for use. In addition, the focusing surface is installed by suspension, and the focal point is adjusted by using a suspended cable for traction to align the area, position and angle of the focusing surface. The structure is compact and light, manufacturing costs are low, and a large amount of conservatory, greenhouse and roof space is used, saving on or even avoiding the need for the floor space taken up by the system using solar energy.