Self-calibration Three Dimensional Light Field Display Based on Scalable Multi-LCDs

Approach to achieve self-calibration three dimensional (3D) light field display is investigated in this paper. The proposed 3D light field display is constructed up on spliced multiLCDs, lens and diaphragm arrays, and directional diffuser. The light field imaging principle, hardware configuration, diffuser characteristic and image reconstruction simulation are described and analyzed, respectively. Besides the light field imaging, a self-calibration method is proposed to improve the imaging performance. An image sensor is deployed to capture calibration patterns projected onto and then reflected by the Polymer Dispersed Liquid Crystal (PDLC) film, which is attached to and shaped the diffuser. These calibration components are assembled with the display unit and can be switched between display mode and calibration mode. In calibration mode, the imperfect imaging relations of optical components are captured and calibrated automatically. We demonstrate our design by implementing the prototype of proposed 3D light field display using modified off-the-shelf products. The proposed approach successfully meets the requirement of real application on scalable configuration, fast-calibration, large viewing angular range and smooth motion parallax. OCIS Codes: 100.6890, 230.0230, 110.4190.