An optically transparent, ghost-free visual display system that
superimposes a virtual image comprising graphical or textual information
onto a field of vision. Embodiments of the visual display system utilize
illumination and optical components that introduce a virtual image onto a
field of vision while minimally obstructing and/or attenuating other
objects within the field of vision. Embodiments of the visual display
system can be used in numerous applications, including head-up displays
("HUDs") for automotive, tracked and rail-mounted vehicles, marine,
aerospace applications, see-through speech prompt displays, and
see-through projection displays.