| 摘要 |
Systems and methods for electronically controlling the viewing angle of a display using liquid crystal optical elements (224) are provided. Each liquid crystal optical element (224) may be associated with a respective scattering module (226) and may selectively steer a generated light beam (223) to one of two or more scattering regions (228, 230) of its associated scattering module (226). When a scattering region receives a steered light beam, the steered light beam may be scattered into a viewing cone having at least one viewing angle defined by a characteristic of that scatter region. Each liquid crystal optical element may be made from one or more suitable liquid crystal materials that can be controlled electronically to vary the effective index of refraction of one or more different regions of the liquid crystal optical element, thereby steering incoming light towards a particular one of two or more scattering regions of an associated scattering module. |
