21 May 2018 Curved wedges and shearing gratings for augmented reality
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Abstract
Designer spectacles look great and we want the same for a virtual display. A curved wedge guide will be described that can transfer the virtual image from a projector near the ear round to the pupil of the eye. The eye-box is tiny but the plan is to steer it so as to follow the pupil of the eye and this will be done by shearing the holographic combiner. Ray-tracing predicts a field of view of 115° per eye and a resolution of 2000 pixels per radian at the fovea using pre-distortion in the projector. Guide tolerances are lax, image accommodation is variable and a few milliWatts suffice to steer the pupil.
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A. R. L. Travis, A. R. L. Travis, Jiaqi Chu, Jiaqi Chu, Andreas Georgiou, Andreas Georgiou, "Curved wedges and shearing gratings for augmented reality", Proc. SPIE 10676, Digital Optics for Immersive Displays, 106760D (21 May 2018); doi: 10.1117/12.2303815; https://doi.org/10.1117/12.2303815
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