Wide-angle beam steering for infrared countermeasures applications

This paper explores two beam steering systems for Infrared Countermeasures applications in the Mid-Wave Infrared range, One system involves the use of decentered achromatic doublet lenses to steer the beam of interest. The second system involves rotating achromatic prisms. The structure of each system is addressed along with the possible materials that could be used in constructing each system. Each system avoids an internal focus. The two systems are compared against one another in terms of their advantages and disadvantages.