High-resolution integral imaging 3D display using time-multiplexed directional backlight

Integral imaging three-dimensional (II3D) display technology has achieved significant progress in applications such as 3D television, medical imaging, and virtual reality. However, II3D displays still face limitations, such as low resolution and crosstalk. In this paper, we propose a novel time-multiplexed directional backlighting method to address the low-resolution limitations of II3D displays. In our proposed method, we first synchronize multi-angle dynamic collimated light with Elemental Image Array (EIA) refresh cycles. Then, we establish a pixel mapping model to precisely control the mapping process and effectively generate high-resolution 3D scenes. A multi-angle backlight II3D display prototype was built with our method. Additionally, we present a novel image quality evaluation method to assess the screen-door effect (SDE) present in the II3D. Experimental results demonstrate a ninefold increase in spatial resolution compared to single-angle directional backlighting methods, together with a significantly reduced SDE, which shows that our proposed method can effectively enhance both image resolution and image quality.