Patent attributes
An autostereoscopic display device includes an adjuster for adjusting a direction of a light beam. The adjuster has an off-state and on-state, and includes a stack of layers. The stack includes first and second solid material layers having first and second optic axes, respectively, and a switchable birefringent material. Further, the stack includes a first interface between the first solid material layer and the birefringent material, and a second interface between the second solid material layer and the birefringent material. In the off-state, the birefringent material at the first and second interfaces are configured to have optic axes parallel to the first and second optic axes, respectively. In the on-state, the birefringent material at the first and second interfaces are configured to have optic axes perpendicular to the first and second optic axes, respectively.
