NEAR INFRARED DYE-BASED ABSORPTION FILTER COMPRISING COBALT OR NICKEL COMPLEXES FOR USE IN COMBINATION WITH NIGHT VISION IMAGING SYSTEMS

摘要

A display includes a light source (20). The display also includes a filter (15) positioned to receive light from the light source. The filter is a dye based filter and attenuates light in the infrared range. The filter can be configured to have a very sharp spectral cutoff between 600 and 640nm. The filter can be an Night Vision Imaging System (NVIS) filter. The display can be utilized in an avionic display system with night vision equipment. The filter can include a host polymer doped with a dye including cobalt or nickel.