Design of a large field-of-view see-through near to eye display with two geometrical waveguides

A novel waveguide near to eye display (WGNED), with new in-coupling and propagation subsystems, is proposed for the first time, to our knowledge, to enlarge the vertical field-ofview (FOV) and the vertical size of the eye box. Two waveguides are stacked-one is for in-coupling and the other for out-coupling. A freeform prism is used to correct the aberrations. These components are combined to form the WGNED. We have simulated such a system; as a result, we show that it achieves a FOV of 30 degrees horizontal (H) x 60 degrees vertical(V) and an eye box of about 15 mm (H) x 12 mm (V). The modulation transfer function of the system is larger than 0.3 at 33 lp/mm and the distortion is smaller than 5%. (C) 2016 Optical Society of America