High Resolution Ultraviolet Filter Development.

Abstract : The SBIR Phase I research reported herein arose out of the AFGL interest in acquiring high-resolution images of missile plumes and similar phenomena, and the lack of ultraviolet filters of adequate resolution quality. The task objectives were first to develop filter spectral designs capable of rejecting (to better than six to eight orders of magnitude) all visible radiation, providing a clear window below 4000A and down to as near 2000A as reasonbly feasible, or such narrower band as needed, without degrading the resolution of the transmitted image by more than 5 line-pairs per mm, or the transmittance by more than three orders of magniturde.