21 May 2018 Curved wedges and shearing gratings for augmented reality
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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.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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