Freeform configurations to improve system resolution

The principle approach, modeling, and error analysis are analyzed, and the system configuration based on freeform is advanced proposed in the algorithm analysis. In order to improve the resolution of the imaging system and reach the theoretical limit, the off-axis system optimization method is promoted from the perspective of theory to engineering. The simulation results show that the system can meet the application requirements of MTF, REA, RMS and other related criteria. Moreover, the system has reduced in volume and weight significantly.