Dual focal waveguide see through near eye display with polarization dependent lenses.
A waveguide near eye display (NED) with a dual focal plane using a polarization dependent lens device is proposed. The novel optical device is composed of a geometric phase holographic lens, a wave plate, and a circular polarizer, which is operating as a concave lens or a see through optical window, depending on the polarization state of the input beam. Such property and ultra thinness of about 1.5 mm can be applied to a combiner eyepiece lens for augmented reality. This optical device attached to the waveguide provides two depth planes with polarization multiplexing. We have demonstrated that our proof of concept system has image planes at infinity and 20 diopters. The devised system can be expected to offer a better immersive experience, compared to a NED system with a single focal plane.
Optics letters