Design of Infrared Optical System Based on Three Germanium Lens with Low Stray Radiation

摘要

A secondary imaging convergence system is designed for a cooled infrared optical system with three Germaniumlenses. An optimal design method for low stray radiation is proposed. Compared with the traditional method, straylight analysis shows that the new design method can suppress stray radiation by 23.87% more than the traditionalmethod.