SUNLIGHT-COLLECTING SYSTEM

A sunlight-collecting system is disclosed, which includes a plurality of lenses changing the angle of an incident sunlight, a wedged light guide plate (LGP) receiving the incident sunlight passing through a lens of the plurality of lenses and a holder fixing the lens of the plurality of lenses at a desired position corresponding the LGP. The structures, materials and desired positions of the lens and LGP make the incident sunlight passing through the lens and then going into the LGP perform total internal reflection (TIR) transmission in the LGP and then concentrate at one end of the LGP. The present sunlight-collecting system changes the corresponding lens to the desired position to keep the above TIR transmission condition, depending on the initial angle of the incident sunlight. In other words, the present sunlight-collecting system collects sunlight by changing corresponding lens instead of using sunlight tracking methods.