Chongfan Technology
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03
2026
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07
Extended-Field-of-View Light Field Extended Reality Display Based on a Metalens Array
Author:
The teams of Jian-Wen Dong and Zong Qin at Sun Yat-sen University have proposed a heterogeneous metalens array (MeLA) that integrates zero‑voltage compensation (VAC) operation and aberration correction into an ultra‑thin, monolithic component with an extended field of view (FOV). This substantial beam‑expansion capability stems from the unique phase profile of the heterogeneous MeLA, in which each microlens features a constant hyperbolic term cascaded with a variable linear stitching term. The authors fabricated centimeter‑scale MeLAs using nanoimprint lithography, achieving an aspect ratio of 7:1. Based on this, they developed a light‑field 3D display prototype with monocular focus cues and a 50° FOV—approximately four times that of conventional microlens arrays—while fully leveraging commercial microdisplays. Moreover, the proposed MeLA system can even be scaled to accommodate human stereoscopic vision, attaining a maximum FOV of 80° without compromising other key performance metrics such as depth of field, resolution, or compactness. Experimental videos generated using a real‑time elemental image array algorithm specifically designed for the proposed MeLA system demonstrate the enhanced FOV achieved under monocular 3D display conditions. By enabling VAC‑free 3D visualization and wide fields of view, this work opens new avenues for extended reality and holds the potential to transform sectors including consumer electronics, precision nanomanufacturing, and healthcare.
The research findings were published on June 29, 2026, in Light: Science & Applications, under the title “Expanded field of view light-field extended-reality displays with metalens array.”
Figure 1: Schematic diagram of the extended field-of-view principle
Figure 2: Design principle and morphology of nanoimprint MeLA
Figure 3: Optical performance characterization of MeLA
Figure 4: Demonstration of the expanded field-of-view display
Figure 5: Demonstration of Monocular 3D Display Capability
Source: Optics World
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