Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints
Abstract Multi‐viewpoint retina projection displays (RPD) with an expanded visible range have been utilized in recent augmented reality (AR) systems to address the vergence‐accommodation conflict (VAC) by providing a long depth of field (DOF). However, these fixed multi‐viewpoint RPD systems still f...
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Wiley
2025-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202416961 |
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| author | Haonan Jiang Yuechu Cheng Zhibo Sun Zhengnan Yuan Huajian Jin Yipeng Huo Man‐Chun Tseng Fion Yeung Hoi‐Sing Kwok Enguo Chen |
| author_facet | Haonan Jiang Yuechu Cheng Zhibo Sun Zhengnan Yuan Huajian Jin Yipeng Huo Man‐Chun Tseng Fion Yeung Hoi‐Sing Kwok Enguo Chen |
| author_sort | Haonan Jiang |
| collection | DOAJ |
| description | Abstract Multi‐viewpoint retina projection displays (RPD) with an expanded visible range have been utilized in recent augmented reality (AR) systems to address the vergence‐accommodation conflict (VAC) by providing a long depth of field (DOF). However, these fixed multi‐viewpoint RPD systems still face a common critical challenge of imaging overlap or discontinuity when eyes rotate or under varying ambient light. To address this, an RPD AR system featuring switchable ultra‐dense viewpoints is presented, enabled by a photo‐alignment liquid crystal Dammann grating (p‐LCDG). The number of viewpoints reaches 49, which forms an ultra‐high density of diffraction lattice in front of the pupil with a record high rotation precision of 1.28°/viewpoint, allowing for a substantial range of 36 mm2. More importantly, the spacing of adjacent viewpoints is 0.532 mm, much smaller than the minimum radius of the pupil (≈1 mm). To facilitate viewpoint switching, a light selector is implemented, ensuring that only the light from a specific viewpoint reaches the eye, which effectively eliminates the image missing or discontinuity. By combining eye tracking technology, the viewer can consistently perceive a singular and clear image from the proposed RPD system, achieving seamless switching of viewpoints. This innovative design paves the way for high‐performance RPDs in AR applications. |
| format | Article |
| id | doaj-art-f6340d2f2bf5485289a166f5bc2ad8da |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-f6340d2f2bf5485289a166f5bc2ad8da2025-08-20T03:25:16ZengWileyAdvanced Science2198-38442025-05-011218n/an/a10.1002/advs.202416961Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense ViewpointsHaonan Jiang0Yuechu Cheng1Zhibo Sun2Zhengnan Yuan3Huajian Jin4Yipeng Huo5Man‐Chun Tseng6Fion Yeung7Hoi‐Sing Kwok8Enguo Chen9National & Local United Engineering Laboratory of Flat Panel Display Technology Fuzhou University 2 Xueyuan Road Fuzhou Fujian Province 350108 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaNational & Local United Engineering Laboratory of Flat Panel Display Technology Fuzhou University 2 Xueyuan Road Fuzhou Fujian Province 350108 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaState Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 ChinaNational & Local United Engineering Laboratory of Flat Panel Display Technology Fuzhou University 2 Xueyuan Road Fuzhou Fujian Province 350108 ChinaAbstract Multi‐viewpoint retina projection displays (RPD) with an expanded visible range have been utilized in recent augmented reality (AR) systems to address the vergence‐accommodation conflict (VAC) by providing a long depth of field (DOF). However, these fixed multi‐viewpoint RPD systems still face a common critical challenge of imaging overlap or discontinuity when eyes rotate or under varying ambient light. To address this, an RPD AR system featuring switchable ultra‐dense viewpoints is presented, enabled by a photo‐alignment liquid crystal Dammann grating (p‐LCDG). The number of viewpoints reaches 49, which forms an ultra‐high density of diffraction lattice in front of the pupil with a record high rotation precision of 1.28°/viewpoint, allowing for a substantial range of 36 mm2. More importantly, the spacing of adjacent viewpoints is 0.532 mm, much smaller than the minimum radius of the pupil (≈1 mm). To facilitate viewpoint switching, a light selector is implemented, ensuring that only the light from a specific viewpoint reaches the eye, which effectively eliminates the image missing or discontinuity. By combining eye tracking technology, the viewer can consistently perceive a singular and clear image from the proposed RPD system, achieving seamless switching of viewpoints. This innovative design paves the way for high‐performance RPDs in AR applications.https://doi.org/10.1002/advs.202416961augmented realitymulti‐viewpoints displayphoto‐alignment liquid crystal dammann grating (p‐LCDG)retina projection display(RPD) |
| spellingShingle | Haonan Jiang Yuechu Cheng Zhibo Sun Zhengnan Yuan Huajian Jin Yipeng Huo Man‐Chun Tseng Fion Yeung Hoi‐Sing Kwok Enguo Chen Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints Advanced Science augmented reality multi‐viewpoints display photo‐alignment liquid crystal dammann grating (p‐LCDG) retina projection display(RPD) |
| title | Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints |
| title_full | Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints |
| title_fullStr | Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints |
| title_full_unstemmed | Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints |
| title_short | Pupil‐Adaptive Retina Projection Augment Reality Displays With Switchable Ultra‐Dense Viewpoints |
| title_sort | pupil adaptive retina projection augment reality displays with switchable ultra dense viewpoints |
| topic | augmented reality multi‐viewpoints display photo‐alignment liquid crystal dammann grating (p‐LCDG) retina projection display(RPD) |
| url | https://doi.org/10.1002/advs.202416961 |
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