Abstract

For monochromatic applications (e.g., imaging of objects illuminated by laser light), diffractive imaging systems provide an alternative to conventional refractive/reflective systems. In particular, a telescope may be used as an afocal attachment to an existing FLIR-type system to increase entrance pupil size and angular resolution in an application where only monochromatic imaging is necessary. In this paper, we investigate the use of simple two- and three-element diffractive designs for this purpose.

© 1990 Optical Society of America