BAE Systems PLC
WAVEGUIDE FOR HEAD-UP DISPLAY, INCLUDING REFLECTIVE OUTPUT COUPLING STRUCTURE

Abstract:

A waveguide structure for a head up display in which a reflective output coupling structure is formed of a separate, but connected, component to a main waveguide. Light is coupled from the main waveguide to the output coupling structure by evanescent wave coupling. In a method of manufacture for such a waveguide the output coupling structure is attached to the main waveguide using an optical feedback technique.