Fig. 1. Structure of CPC with plane-absorber

Fig. 2. Structure of PACPC

Fig. 3. Structure of the truncation PACPC

Fig. 4. Segmented structure of scattered radiation

Fig. 5. Segmented structure of direct radiation

Fig. 6. Concentrating rays from south of PACPC. (a) Incident angle of light is 70°; (b) incident angle of light is 56.4978°; (c) incident angle of light is 35°

Fig. 7. Concentrating rays from north of PACPC. (a) Incident angle of light is 1°; (b) incident angle of light is -6.5339°; (c) incident angle of light is -30°

Fig. 8. Optical efficiency of PACPC with different reflectivities

Fig. 9. Normalized energy flow density distribution on absorber surface

Fig. 10. Collection of direct radiation energy

Fig. 11. Collection of scattered radiation energy

Fig. 12. Lighting quantity of two condensing systems

Fig. 13. Improvement ratio of lighting quantity of the system