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Python设计实现基于异构超构透镜阵列的大视场XR显示

  • 2026-08-20 13:26:48
Python设计实现基于异构超构透镜阵列的大视场XR显示

01

导读

戴上AR眼镜,想要身临其境却总被“眩晕感”劝退?想要大视野,却无法兼顾真实的3D景深?近日,中山大学董建文教授与秦宗副教授团队在Light: Science & Applications 发表最新研究成果。团队研发了一种异构超构透镜阵列(MeLA),成功打破传统光学瓶颈,实现了无眩晕、大视场(50°)的单目3D XR显示。

02

痛点:为什么戴AR会头晕?

目前市面上的AR眼镜普遍存在“视觉辐辏调节冲突”(VAC)——屏幕光线距离固定,但眼睛试图对焦虚拟的远方,导致大脑产生分歧,引发眩晕。虽然“光场显示”技术能提供真实的3D景深来消除眩晕,但受限于传统微透镜的边缘像差,其视场角极小(通常只有13°左右),就像透过一根吸管看世界。

03

破局:给光线加上“定制导航”

为了兼顾“不晕”和“看得广”,中山大学团队巧妙设计了异构超构透镜阵列(MeLA)。与传统完全相同的微透镜不同,该阵列中的每一个超小透镜都经过个性化定制,将“球面透镜”与“微棱镜”的功能合二为一。它能像变魔术一样,将大角度的边缘光线精准“掰弯”并高清聚焦,完美消除了边缘图像的模糊与畸变。

传统微透镜与超构透镜原理对比图

04

核心硬核突破

  • 视场角狂飙4倍: 利用现有的商用微显示器,实验成功实现了50°的超大视场角,是传统技术的近四倍。仿真表明,若搭配更大屏幕,视场角可达86°,足以覆盖人类双目视觉极限。
  • 纳米压印,走向大面积量产: 摒弃了昂贵低效的加工方式,团队采用纳米压印技术,成功制造出厘米级、具备7:1高深宽比的超构透镜阵列,为未来XR眼镜的低成本量产铺平了道路。
  • 140 FPS 超高流畅度: 团队专门开发了专用的像素映射校正算法,在普通笔记本电脑上就能跑出 140 帧/秒(FPS)的渲染速度,彻底告别画面延迟。
50°视场实拍与走廊实景导航图

05

设计结果

整体设计结果如下,其中,波长532 nm,光栅周期330 nm,纳米柱高度700

最小直径100 nm,最大直径230 nm,眼距18 mm,扫参时间6 s,一共9列

稀疏排布,横跨约13.2 mm,真实焦距1.8 mm,GDS出图15 min(3.7G)

直径与相位分析
传统超透镜与异构MeLA结果对比分析
聚焦特性分布

总结来说,这项研究利用一片超薄的超构透镜,同时实现了像差校正与视场扩展。未来,该技术有望在下一代消费级AR眼镜、工业制造及眼科医疗中大放异彩。

06

论文信息

  • 论文标题: Expanded field of view light-field extended-reality displays with metalens array
  • 发表期刊: Light: Science & Applications (Nature Portfolio)
  • 通讯作者: 秦宗(副教授)、董建文(教授)
  • 第一作者: 卢文龙
  • 通讯单位: 中山大学物理学院、光电材料与技术国家重点实验室
  • 文章链接: https://doi.org/10.1038/s41377-026-02266-w

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  1. CONNECT:[ UseTime:0.001015s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001878s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000841s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000734s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001481s ]
  6. SELECT * FROM `set` [ RunTime:0.000729s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001588s ]
  8. SELECT * FROM `article` WHERE `id` = 510446 LIMIT 1 [ RunTime:0.001109s ]
  9. UPDATE `article` SET `lasttime` = 1787290719 WHERE `id` = 510446 [ RunTime:0.058888s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.002813s ]
  11. SELECT * FROM `article` WHERE `id` < 510446 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001237s ]
  12. SELECT * FROM `article` WHERE `id` > 510446 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001101s ]
  13. SELECT * FROM `article` WHERE `id` < 510446 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001728s ]
  14. SELECT * FROM `article` WHERE `id` < 510446 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001837s ]
  15. SELECT * FROM `article` WHERE `id` < 510446 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.008125s ]
0.266802s