Concentrated solar panel can effectively save semiconductor consumption of solar cells because of its high photoelectric conversion efficiency. However

traditional concentrated optical design is inflexible so that the overall dimensions of such panels are very large

coming with high installation and maintenance cost. Flat plate concentrated solar module using proportionate light compression

with small thickness

is flexible to design and fabricate according to sunshine condition. An optical design principle of flat plate solar module is proposed

and software simulation will show the optical performance of the concentrators.