A 3D light field display device may include an array of light-emitting elements configured to emit light, an array of multifocal lenses configured to focus the light from the array of light-emitting elements, each of the multifocal lenses having two or more portions, different portions being configured to focus the light to different distances, and a spatial light modulator (SLM) configured to control the portion of the lens upon which the light falls. The device may include an array of collimating optical elements for collimating the emitted light. Each multifocal lens may be annular in shape and configured to focus the light to different distances. The SLM may include a plurality of pixels that each correspond to a portion of a multifocal lens. The SLM may control which portion of a multifocal lens the light falls to select a focal distance for the light.
|Patent number||WO2019164745 A1|
|IPC||H04N 13/307 ,G02B 27/22,G02B 27/00 ,G02B 27/01|
|Publication status||Published - 29 Aug 2019|
|MoE publication type||Not Eligible|