1. A display system comprising: an optical component having a first surface and a second surface, wherein the first surface comprises a diffractive optical element; and a projector system to create a projected image on the optical component, comprising: an illumination source that emits electromagnetic radiation within a predetermined spectral band; an image generator that ascribes image characteristics to the radiation; and an optically-powered component that directs the radiation at the first surface of the optical component; wherein the diffractive optical element reflects at least a portion of the radiation in a predetermined direction; wherein the optical component has zero optical power for transmitted light; wherein the optical component transmits at least a portion of the ambient scenery within a predetermined spectral band within a field-of-view of the projected image; and wherein the projected image maintains substantial boresight alignment with the ambient image.