Fig. 1. Surface structure of solar CPC. (a) BT section; (b) AB section

Fig. 2. Solution flow chart of CPC surface structure

Fig. 3. Surface structure of circular absorber CPC

Fig. 4. Surface structure of plate absorber CPC

Fig. 5. Heat absorbing parts of solar collector and structure of semicircular absorber CPC. (a) Heat absorbing parts of solar collector^[15]; (b) structure of semicircular absorber CPC

Fig. 6. Surface structure of semicircular absorber CPC

Fig. 7. Semicircular absorber CPC model

Fig. 8.

Laser experimental platform

Fig. 9. Error analysis diagrams of laser experimental results and theoretical results. (a) Incident angle is 0°; (b) incident angle is 10°; (c) incident angle is 15°; (d) incident angle is 20°

Fig. 10. Ray tracing diagrams. (a) Incident angle is 20°; (b) incident angle is 30°; (c) incident angle is 40°