High-efficiency concentrated optical module

► The height-to-width ratio of the light collection module <0.7, and the ratio of concentration >700. ► The optical efficiency of the proposed design with difference concentrating lens = 91% in practice. ► The difference in optical efficiency varies about 2.7%-6.6%. ► The error of the total flux varies in a range of 0.10-0.23 W. ► Focal length of the reflector ≦5.5 mm, geometry accuracy ≦0.02 mm.