Optical design of dual-mode seeker for long-wave infrared and mid-wave infrared seeker in missile application

In missile applications, there are many parameters to be optimized. One of these is diameter of seeker and the other one is counter-countermeasures. To decrease diameter of the seeker, there are some methods. One of them is light transfer to stable detector. In this technique, detector and objective stay stable out of gimbal mechanism and light is focused in front of the objective. Later virtual image is created at the detector. By this way, diameter of the objective and detector don't affect diameter of the seeker and give more free space to put another detector for dual wavelength into system to be immune to countermeasures. In this study, dual mode system's optical and mechanical designs have been made for mid-wave infra-red imaging and long-wave infra-red imaging. Optical designs performances have been illustrated in simulation results. Finally, conceptual design of dual mode seeker will be summarized.