Patent ID: 11880049
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A three-dimensional display apparatus comprising:
a light source;
a light guide plate configured to guide a beam incident from the light source;
at least one geometric phase deflector configured to change a deflection angle of light incident from the light guide plate; and
a spatial light modulator configured to form a hologram image using light transmitted through the at least one geometric phase optical deflector,
wherein the at least one geometric phase deflector comprises a liquid crystal layer and a controller configured to apply a voltage to the liquid crystal layer,
wherein, based on the controller applying a first voltage to the liquid crystal layer, incident light passes through the liquid crystal layer without being deflected,
wherein, based on the controller applying a second voltage to the liquid crystal layer, the liquid crystal layer deflects left-handed circularly polarized incident light at a first angle and deflects right-handed circularly polarized incident light at a second angle,
wherein, based on the controller applying a third voltage to the liquid crystal layer, the liquid crystal layer deflects the left-handed circularly polarized incident light at a third angle and deflects the right-handed circularly polarized incident light at a fourth angle, and
wherein the first angle, the second angle, the third angle, and the fourth angle are different from each other.