One kind of high resolution TV guided optical zoom system

According to the technical requirements of the high resolution TV seeker, the system's optics parameters were calculated and the focusing range was optimized. F number of the optical system was defined. An optical zoom system with focal length of 40 mm ~ 152 mm and the F number of 3.5 was designed. The design results show that throughout the zoom process the values of the MTF at 106 lp/mm reach or close to 0.4, the image plane is stable and the image quality is good.