US Patent 12061350 3D display directional backlight based on diffractive elements

Some embodiments of an apparatus may include: a plurality of light sources, wherein each of the plurality of light sources is configured to emit a respective light beam; one or more diffractive layers; and an optical mask configured to be synchronized to an illumination of the respective light beams. Some embodiments of a method may include: emitting a light beam from each of a plurality of light emitting sources to generate a plurality of light beams; diffracting each of the plurality of light beams to generate a plurality of diffracted light beams; and synchronizing an optical mask to the plurality of diffracted light beams.