Time-multiplexed method for view density enhancement in integral imaging-based light field displays

Conventional light field display systems based on integral imaging (InI) suffer from a major trade-off between the view density and spatial resolution. In this Letter, a new time-multiplexed method is proposed and demonstrated to enhance the view density of InI-based light field displays. By using a digitally switchable shutter array, the view density and elemental view numbers can be improved multiple times without sacrificing spatial resolution. A four-phase time multiplexed InI-based display prototype was built and demonstrated with a total of 4 × 4 views over a 5.45 mm-by-5.45 mm eyebox (or equivalently a view density of 0.54 mm⁻²) and angular resolution of 2 arcmin.