Scholarlink

<p>We present a novel approach to resolving the vergence–accommodation conflict (VAC) in extended reality (XR) optics by introducing a quarter-waveplate (QWP) geometric phase lens (GPL) capable of triple wavefront modulation—focusing, defocusing, and non-modulating at infinity. This polarization-driven behavior is interpreted using contour trajectories on the Poincaré sphere and compared against conventional half-waveplate (HWP) GPLs. Leveraging this property, we propose a bi-stacked QWP GPL module that enables nine distinct varifocal states through polarization-controlled input selection and output filtering. In contrast, HWP-based modules under equivalent stacking conditions are limited to four focal states. The QWP GPL module supports a compact varifocal system spanning a continuous depth range from 24.27 cm to infinity, with a 0.3-diopter interval aligned with the human visual comfort zone. Importantly, the number of representable focal depths scales as 3<sup>n</sup> for <i>n</i> stacked layers, offering a (1.5)<sup>n</sup>-fold improvement over the 2<sup>n</sup> scaling of HWP systems. This enables finer depth transitions using fewer lens units while retaining both compactness and optical modularity, establishing a depth-switchable imaging platform that enhances visual comfort and depth fidelity in next-generation XR display systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Multi-depth switching by triple wavefront modulation of quarter-waveplate geometric phase lenses for vergence-accommodation-matching extended reality

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月19日

查看全文
  • Jung-Yeop Shin,
  • Jae-Won Lee,
  • Hafiz Saad Khaliq,
  • Erkhembaatar Dashdavaa,
  • Munkh-Uchral Erdenebat,
  • Min-Seok Kim,
  • Jin-Hyeok Seo,
  • Young-Min Cho,
  • Hak-Rin Kim

摘要

We present a novel approach to resolving the vergence–accommodation conflict (VAC) in extended reality (XR) optics by introducing a quarter-waveplate (QWP) geometric phase lens (GPL) capable of triple wavefront modulation—focusing, defocusing, and non-modulating at infinity. This polarization-driven behavior is interpreted using contour trajectories on the Poincaré sphere and compared against conventional half-waveplate (HWP) GPLs. Leveraging this property, we propose a bi-stacked QWP GPL module that enables nine distinct varifocal states through polarization-controlled input selection and output filtering. In contrast, HWP-based modules under equivalent stacking conditions are limited to four focal states. The QWP GPL module supports a compact varifocal system spanning a continuous depth range from 24.27 cm to infinity, with a 0.3-diopter interval aligned with the human visual comfort zone. Importantly, the number of representable focal depths scales as 3n for n stacked layers, offering a (1.5)n-fold improvement over the 2n scaling of HWP systems. This enables finer depth transitions using fewer lens units while retaining both compactness and optical modularity, establishing a depth-switchable imaging platform that enhances visual comfort and depth fidelity in next-generation XR display systems.