Depth-enhanced light field camera system based on focus-tunable geometric phase lens module

We propose an active-switching light-field (LF) camera system that significantly extends the measurable depth range over conventional passive-optics-based LF systems by integrating a stacked geometric phase lens (GPL) module in a compact design. During elemental image acquisition and LF rendering, chromatic aberration in the focus-tunable GPL is compensated by adjusting the reconstruction depth and magnification for each color channel. Additionally, the optimal GPL operation sets are selected based on color-dependent depth-of-focus conditions. These optimizations enable the proposed GPL-based LF system to achieve full-color, depth-enhanced LF imaging while mitigating the typical trade-off between spatial resolution and depth of field limitations.