Optical combiner for displaying augmented reality with user's vision correction, method for operating the optical combiner, augmented reality glasses for displaying augmented reality with user's vision correction

Abstract

The disclosure relates to augmented reality devices. An optical combiner configured to display augmented reality with user's vision correction is provided. The optical combiner includes a compensator, a waveguide having an in-coupling diffractive optical elements (DOE) and an out-coupling DOE, and a virtual image projector. The waveguide has a thickness gradient along the first and second side of the waveguide such that with propagation of virtual image-forming rays inside the waveguide from the in-coupling DOE to the out-coupling DOE, the incidence angle of the rays on walls inside the waveguide increases. The out-coupling DOE is placed opposite a user's eye, and is configured to output virtual image-forming rays, incident on the out-coupling DOE at an angle equal to or greater than the smallest angle of predetermined angular selectivity range of the out-coupling DOE, from the waveguide into the user's eye.