Waveguide-based near-eye display with dual-channel exit pupil expander

Abstract We propose a waveguide-based near-eye display featuring dual-channel exit pupil expander, which is composed of an in-coupler, relay gratings, and out-coupler. Unlike the conventional displays, whose field views are usually non-split or partially split, our expander able to evenly split view into two halves. The greatest benefit doing so that upper limit could be significantly increased. design rules for all components, including microdisplay, collimating lens, waveguide have been studied. refractive index dimension identified as factors view. In what follows, its key specifications recapitulated. Field 70° (diagonal), eye relief 15 mm, 20 × 9 mm2, modulation transfer function above 0.591 at 30 cycle/degree, contrast ratio 13, distortion 1.38%.