Patent ID: 11917121
Assignee: INTERDIGITAL MADISON PATENT HOLDINGS, SAS
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus of light field display comprising:
a first layer comprising an electrically adjustable liquid crystal capable of altering a polarization state of light passing through the first layer depending upon the state of electrical adjustment; and
a second layer, parallel to the first layer, comprising a birefringent material having an optical interface to a substrate with surface features, wherein a refractive index difference associated with the optical interface depends on the polarization state of an incident light,
wherein the second layer is configured to scatter, according to a first angular pattern, light passing through the second layer when the polarization state of the light is in a first polarization state corresponding to a first refractive index difference associated with the optical interface, and
wherein the second layer is configured to scatter, according to a second angular pattern, light passing through the second layer when the polarization state of the light is in a second polarization state corresponding to a second refractive index difference associated with the optical interface.