Infrared projector optical design considerations

Abstract

The optical considerations that need to be addressed during the design of IR projectors intended for application within real-time hardware-in-the-loop simulation systems are examined. Attention is paid to the form of the spatial frequency transfer function and, thereby, to the factors that affect the spatial resolution within the composite optical system defined by the IR projector and the imaging unit under test, with particular emphasis on the sampling effects (aliasing) that need to be avoided.