Abstract: In implementations of hologram focus accommodation, a focus accommodation system is implemented for variable focus of a generated image, such as a hologram, that is displayed for viewing on a waveguide display. The focus accommodation system includes switchable polarization retarders that rotate a polarization of light of the generated image, where the light passes through the switchable polarization retarders along an imaging path in which the generated image is viewable. The focus accommodation system also includes polarization sensitive gratings alternatingly interspersed with the switchable polarization retarders. Each of the polarization sensitive gratings are configurable to diffract the light in a first polarization state and transmit the light in a second polarization state. The variable focus is adjustable to a focal distance at which a user perceives viewing the generated image as displayed by the waveguide display.

Abstract: In implementations of hologram focus accommodation, a focus accommodation system is implemented for variable focus of a generated image, such as a hologram, that is displayed for viewing on a waveguide display. The focus accommodation system includes switchable polarization retarders that rotate a polarization of light of the generated image, where the light passes through the switchable polarization retarders along an imaging path in which the generated image is viewable. The focus accommodation system also includes polarization sensitive gratings alternatingly interspersed with the switchable polarization retarders. Each of the polarization sensitive gratings are configurable to diffract the light in a first polarization state and transmit the light in a second polarization state. The variable focus is adjustable to a focal distance at which a user perceives viewing the generated image as displayed by the waveguide display.