Study of virtual displays based on raster optical elements

The paper is devoted to the study of the ultimate resolution of virtual displays with raster systems. Raster systems in such displays are used for an essential reduction of their longitudinal overall dimensions. Three schemes are considered: in the first one each element of the raster system forms an image of one pixel only, in the second one each element of the raster system forms a small part of a virtual image, the third scheme is analogous to the first one, but is implemented in the form of a contact lens. For each scheme, we analyse the overall dimensions of the optical system and the characteristics of the virtual image, i.e., the ultimate resolution and the nonuniformity of its illumination.