Fig. 1. Scanning zoom infrared system structure layout

Fig. 2. Scanning zoom optic system simplified model

Fig. 3. Continuous zoom telescope design

Fig. 4. 6× zoom optic system layout

Fig. 5. Optic system MTF and distortion layout

Fig. 6. Optic system zoom curve

Fig. 7. Merit function curve at different EFFL

Fig. 8. Scanning edge MTF and spot radius layout

Fig. 9. MTF at different working temperature

Fig. 10. System staring test at laboratory

Fig. 11. System scanning test at laboratory