Light-concentrating solar device

A light-concentrating solar device, comprising:

• a first light-concentrating trough including a side wall and a bottom wall, the side wall defining a top having a larger opening and a base having a smaller opening, the base being closed by the bottom wall, and the inner surfaces of the side wall and the bottom wall being at least partially reflecting surfaces, wherein the bottom wall of the first light-concentrating trough is formed as a convex reflective surface with a direction in which it protrudes facing toward the top of the first light-concentrating trough;
• a second light-concentrating trough including a side wall, the side wall defining a top having a larger opening and a base having a smaller opening, the inner surface of the side wall being at least partially a reflecting surface, the opening direction of the top of the second light-concentrating trough being consistent with the opening direction of the top of the first light-concentrating trough, and the bottom of the second light-concentrating trough being arranged inside the first light-concentrating trough and spaced apart from the bottom of the first light-concentrating trough;
• and
• a double-sided light energy utilization apparatus arranged at the bottom of the second light-concentrating trough, the front and back sides thereof being able to receive sunlight with one side facing toward the top of the second light-concentrating trough and the other side facing toward the bottom of the first light-concentrating trough.