Abstract: A display device includes a light source which provides light, a plurality of first nanostructures which collimates the light from the light source and converts a light path of the light from the light source, a light guide portion which totally reflects light incident thereon from the plurality of first nanostructures in a way such that the light travels from one end to another end thereof, a spatial light modulator which modulates a phase of light incident thereon from the light guide portion and outputs the light having the phase modulated thereby, and a plurality of second nanostructures which collimates light incident thereon from the light guide portion and converts a light path of the light incident thereon to provide the light incident thereon to the spatial light modulator.

Abstract: An optical device and an electronic device including the same are provided. An optical device may include a light source including a plurality of first pixels configured to emit light, a polarization member configured to control polarization of light output from the light source, a spatial light modulator including a plurality of second pixels configured to display a light modulation pattern to modulate a phase of light passing through the polarization member, and a controller configured to control the plurality of first pixels and the plurality of second pixels based on an input image.