Wedge guides and pupil steering for mixed reality: Wedge guides and pupil steering for mixed reality

We suggest folding the optics of a classic-mixed reality display into a slim wedge light guide with holographic combiner so that the pupil of a projector near the ear is imaged onto the pupil of the eye. Such folding makes the pupil of the virtual image small, so when gaze wanders, the image pupil should be switched between appropriate positions by shearing the combiner. Modeling indicates that if a phase plate corrects distortion for the ray to the fovea center, the rest of the image can be scanned at adequate resolution provided that a cylindrical mirror varies focal power in the horizontal.