Global optimization on precision multiple configurations

Based on Gaussian optical system theory and vector method, an unobstructed off axis zoom system in terahertz band is designed. The field angle of view of the system is 3 ° × 3°~0.6° × 0.6 °, the MTF of the system at 10 LP / mm ≥ 0.4. By using the designer search and intelligent algorithm automatically to find the optimal solutions, two different methods have compared, and achieved the two design results. These have been seen that because the reflective zoom system is different from the relatively mature transmission continuous zoom systems fully, that these limitations in increasing the field of view and the energy utilization of the detection surface have been solved. Therefore, there are still much more space for research and improvement in engineering application.